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Author SHA1 Message Date
Linus Torvalds
deb4b9dd3b xen: branch for v6.7-rc4 
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Merge tag 'for-linus-6.7a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - A fix for the Xen event driver setting the correct return value when
   experiencing an allocation failure

 - A fix for allocating space for a struct in the percpu area to not
   cross page boundaries (this one is for x86, a similar one for Arm was
   already in the pull request for rc3)

* tag 'for-linus-6.7a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: fix error code in xen_bind_pirq_msi_to_irq()
  x86/xen: fix percpu vcpu_info allocation
 2023-12-03 08:31:53 +09:00
Juergen Gross
db2832309a x86/xen: fix percpu vcpu_info allocation 
Today the percpu struct vcpu_info is allocated via DEFINE_PER_CPU(),
meaning that it could cross a page boundary. In this case registering
it with the hypervisor will fail, resulting in a panic().

This can easily be fixed by using DEFINE_PER_CPU_ALIGNED() instead,
as struct vcpu_info is guaranteed to have a size of 64 bytes, matching
the cache line size of x86 64-bit processors (Xen doesn't support
32-bit processors).

Fixes: 5ead97c84fa7 ("xen: Core Xen implementation")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.con>
Link: https://lore.kernel.org/r/20231124074852.25161-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
 2023-11-28 12:47:11 +01:00
Linus Torvalds
4892711ace Fix/enhance x86 microcode version reporting: fix the bootup log spam, 
and remove the driver version announcement to avoid version
 confusion when distros backport fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 microcode fixes from Ingo Molnar:
 "Fix/enhance x86 microcode version reporting: fix the bootup log spam,
  and remove the driver version announcement to avoid version confusion
  when distros backport fixes"

* tag 'x86-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Rework early revisions reporting
  x86/microcode: Remove the driver announcement and version
 2023-11-26 08:42:42 -08:00
Linus Torvalds
e81fe50520 Fix a bug in the Intel hybrid CPUs hardware-capabilities enumeration 
code resulting in non-working events on those platforms.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 perf event fix from Ingo Molnar:
 "Fix a bug in the Intel hybrid CPUs hardware-capabilities enumeration
  code resulting in non-working events on those platforms"

* tag 'perf-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Correct incorrect 'or' operation for PMU capabilities
 2023-11-26 08:34:12 -08:00
Linus Torvalds
05c8c94ed4 hyperv-fixes for 6.7-rc3 
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Merge tag 'hyperv-fixes-signed-20231121' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - One fix for the KVP daemon (Ani Sinha)

 - Fix for the detection of E820_TYPE_PRAM in a Gen2 VM (Saurabh Sengar)

 - Micro-optimization for hv_nmi_unknown() (Uros Bizjak)

* tag 'hyperv-fixes-signed-20231121' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Use atomic_try_cmpxchg() to micro-optimize hv_nmi_unknown()
  x86/hyperv: Fix the detection of E820_TYPE_PRAM in a Gen2 VM
  hv/hv_kvp_daemon: Some small fixes for handling NM keyfiles
 2023-11-22 09:56:26 -08:00
Uros Bizjak
18286883e7 x86/hyperv: Use atomic_try_cmpxchg() to micro-optimize hv_nmi_unknown() 
Use atomic_try_cmpxchg() instead of atomic_cmpxchg(*ptr, old, new) == old
in hv_nmi_unknown(). On x86 the CMPXCHG instruction returns success in
the ZF flag, so this change saves a compare after CMPXCHG. The generated
asm code improves from:

  3e:	65 8b 15 00 00 00 00 	mov    %gs:0x0(%rip),%edx
  45:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  4a:	f0 0f b1 15 00 00 00 	lock cmpxchg %edx,0x0(%rip)
  51:	00
  52:	83 f8 ff             	cmp    $0xffffffff,%eax
  55:	0f 95 c0             	setne  %al

to:

  3e:	65 8b 15 00 00 00 00 	mov    %gs:0x0(%rip),%edx
  45:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  4a:	f0 0f b1 15 00 00 00 	lock cmpxchg %edx,0x0(%rip)
  51:	00
  52:	0f 95 c0             	setne  %al

No functional change intended.

Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20231114170038.381634-1-ubizjak@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20231114170038.381634-1-ubizjak@gmail.com>
 2023-11-22 03:47:44 +00:00
Borislav Petkov (AMD)
080990aa33 x86/microcode: Rework early revisions reporting 
The AMD side of the loader issues the microcode revision for each
logical thread on the system, which can become really noisy on huge
machines. And doing that doesn't make a whole lot of sense - the
microcode revision is already in /proc/cpuinfo.

So in case one is interested in the theoretical support of mixed silicon
steppings on AMD, one can check there.

What is also missing on the AMD side - something which people have
requested before - is showing the microcode revision the CPU had
*before* the early update.

So abstract that up in the main code and have the BSP on each vendor
provide those revision numbers.

Then, dump them only once on driver init.

On Intel, do not dump the patch date - it is not needed.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/CAHk-=wg=%2B8rceshMkB4VnKxmRccVLtBLPBawnewZuuqyx5U=3A@mail.gmail.com
 2023-11-21 16:35:48 +01:00
Borislav Petkov (AMD)
2e569ada42 x86/microcode: Remove the driver announcement and version 
First of all, the print is useless. The driver will either load and say
which microcode revision the machine has or issue an error.

Then, the version number is meaningless and actively confusing, as Yazen
mentioned recently: when a subset of patches are backported to a distro
kernel, one can't assume the driver version is the same as the upstream
one. And besides, the version number of the loader hasn't been used and
incremented for a long time. So drop it.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20231115210212.9981-2-bp@alien8.de
 2023-11-21 16:20:49 +01:00
Dapeng Mi
e8df9d9f42 perf/x86/intel: Correct incorrect 'or' operation for PMU capabilities 
When running perf-stat command on Intel hybrid platform, perf-stat
reports the following errors:

  sudo taskset -c 7 ./perf stat -vvvv -e cpu_atom/instructions/ sleep 1

  Opening: cpu/cycles/:HG
  ------------------------------------------------------------
  perf_event_attr:
    type                             0 (PERF_TYPE_HARDWARE)
    config                           0xa00000000
    disabled                         1
  ------------------------------------------------------------
  sys_perf_event_open: pid 0  cpu -1  group_fd -1  flags 0x8
  sys_perf_event_open failed, error -16

   Performance counter stats for 'sleep 1':

       <not counted>      cpu_atom/instructions/

It looks the cpu_atom/instructions/ event can't be enabled on atom PMU
even when the process is pinned on atom core. Investigation shows that
exclusive_event_init() helper always returns -EBUSY error in the perf
event creation. That's strange since the atom PMU should not be an
exclusive PMU.

Further investigation shows the issue was introduced by commit:

  97588df87b56 ("perf/x86/intel: Add common intel_pmu_init_hybrid()")

The commit originally intents to clear the bit PERF_PMU_CAP_AUX_OUTPUT
from PMU capabilities if intel_cap.pebs_output_pt_available is not set,
but it incorrectly uses 'or' operation and leads to all PMU capabilities
bits are set to 1 except bit PERF_PMU_CAP_AUX_OUTPUT.

Testing this fix on Intel hybrid platforms, the observed issues
disappear.

Fixes: 97588df87b56 ("perf/x86/intel: Add common intel_pmu_init_hybrid()")
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231121014628.729989-1-dapeng1.mi@linux.intel.com
 2023-11-21 13:44:36 +01:00
Linus Torvalds
cd557bc0a2 - Ignore invalid x2APIC entries in order to not waste per-CPU data 
- Fix a back-to-back signals handling scenario when shadow stack is in
   use
 
 - A documentation fix
 
 - Add Kirill as TDX maintainer
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Merge tag 'x86_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Ignore invalid x2APIC entries in order to not waste per-CPU data

 - Fix a back-to-back signals handling scenario when shadow stack is in
   use

 - A documentation fix

 - Add Kirill as TDX maintainer

* tag 'x86_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/acpi: Ignore invalid x2APIC entries
  x86/shstk: Delay signal entry SSP write until after user accesses
  x86/Documentation: Indent 'note::' directive for protocol version number note
  MAINTAINERS: Add Intel TDX entry
 2023-11-19 13:46:17 -08:00
Roger Pau Monne
bfa993b355 acpi/processor: sanitize _OSC/_PDC capabilities for Xen dom0 
The Processor capability bits notify ACPI of the OS capabilities, and
so ACPI can adjust the return of other Processor methods taking the OS
capabilities into account.

When Linux is running as a Xen dom0, the hypervisor is the entity
in charge of processor power management, and hence Xen needs to make
sure the capabilities reported by _OSC/_PDC match the capabilities of
the driver in Xen.

Introduce a small helper to sanitize the buffer when running as Xen
dom0.

When Xen supports HWP, this serves as the equivalent of commit
a21211672c9a ("ACPI / processor: Request native thermal interrupt
handling via _OSC") to avoid SMM crashes.  Xen will set bit
ACPI_PROC_CAP_COLLAB_PROC_PERF (bit 12) in the capability bits and the
_OSC/_PDC call will apply it.

[ jandryuk: Mention Xen HWP's need.  Support _OSC & _PDC ]
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Reviewed-by: Michal Wilczynski <michal.wilczynski@intel.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20231108212517.72279-1-jandryuk@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
 2023-11-13 07:22:00 +01:00
Saurabh Sengar
7e8037b099 x86/hyperv: Fix the detection of E820_TYPE_PRAM in a Gen2 VM 
A Gen2 VM doesn't support legacy PCI/PCIe, so both raw_pci_ops and
raw_pci_ext_ops are NULL, and pci_subsys_init() -> pcibios_init()
doesn't call pcibios_resource_survey() -> e820__reserve_resources_late();
as a result, any emulated persistent memory of E820_TYPE_PRAM (12) via
the kernel parameter memmap=nn[KMG]!ss is not added into iomem_resource
and hence can't be detected by register_e820_pmem().

Fix this by directly calling e820__reserve_resources_late() in
hv_pci_init(), which is called from arch_initcall(pci_arch_init).

It's ok to move a Gen2 VM's e820__reserve_resources_late() from
subsys_initcall(pci_subsys_init) to arch_initcall(pci_arch_init) because
the code in-between doesn't depend on the E820 resources.
e820__reserve_resources_late() depends on e820__reserve_resources(),
which has been called earlier from setup_arch().

For a Gen-2 VM, the new hv_pci_init() also adds any memory of
E820_TYPE_PMEM (7) into iomem_resource, and acpi_nfit_register_region() ->
acpi_nfit_insert_resource() -> region_intersects() returns
REGION_INTERSECTS, so the memory of E820_TYPE_PMEM won't get added twice.

Changed the local variable "int gen2vm" to "bool gen2vm".

Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1699691867-9827-1-git-send-email-ssengar@linux.microsoft.com>
 2023-11-12 22:50:30 +00:00
Arnd Bergmann
abc28463c8 kprobes: unify kprobes_exceptions_nofify() prototypes 
Most architectures that support kprobes declare this function in their
own asm/kprobes.h header and provide an override, but some are missing
the prototype, which causes a warning for the __weak stub implementation:

kernel/kprobes.c:1865:12: error: no previous prototype for 'kprobe_exceptions_notify' [-Werror=missing-prototypes]
 1865 | int __weak kprobe_exceptions_notify(struct notifier_block *self,

Move the prototype into linux/kprobes.h so it is visible to all
the definitions.

Link: https://lore.kernel.org/all/20231108125843.3806765-4-arnd@kernel.org/

Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
 2023-11-10 19:59:05 +09:00
Zhang Rui
ec9aedb2aa x86/acpi: Ignore invalid x2APIC entries 
Currently, the kernel enumerates the possible CPUs by parsing both ACPI
MADT Local APIC entries and x2APIC entries. So CPUs with "valid" APIC IDs,
even if they have duplicated APIC IDs in Local APIC and x2APIC, are always
enumerated.

Below is what ACPI MADT Local APIC and x2APIC describes on an
Ivebridge-EP system,

[02Ch 0044   1]                Subtable Type : 00 [Processor Local APIC]
[02Fh 0047   1]                Local Apic ID : 00
...
[164h 0356   1]                Subtable Type : 00 [Processor Local APIC]
[167h 0359   1]                Local Apic ID : 39
[16Ch 0364   1]                Subtable Type : 00 [Processor Local APIC]
[16Fh 0367   1]                Local Apic ID : FF
...
[3ECh 1004   1]                Subtable Type : 09 [Processor Local x2APIC]
[3F0h 1008   4]                Processor x2Apic ID : 00000000
...
[B5Ch 2908   1]                Subtable Type : 09 [Processor Local x2APIC]
[B60h 2912   4]                Processor x2Apic ID : 00000077

As a result, kernel shows "smpboot: Allowing 168 CPUs, 120 hotplug CPUs".
And this wastes significant amount of memory for the per-cpu data.
Plus this also breaks https://lore.kernel.org/all/87edm36qqb.ffs@tglx/,
because __max_logical_packages is over-estimated by the APIC IDs in
the x2APIC entries.

According to https://uefi.org/specs/ACPI/6.5/05_ACPI_Software_Programming_Model.html#processor-local-x2apic-structure:

  "[Compatibility note] On some legacy OSes, Logical processors with APIC
   ID values less than 255 (whether in XAPIC or X2APIC mode) must use the
   Processor Local APIC structure to convey their APIC information to OSPM,
   and those processors must be declared in the DSDT using the Processor()
   keyword. Logical processors with APIC ID values 255 and greater must use
   the Processor Local x2APIC structure and be declared using the Device()
   keyword."

Therefore prevent the registration of x2APIC entries with an APIC ID less
than 255 if the local APIC table enumerates valid APIC IDs.

[ tglx: Simplify the logic ]

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230702162802.344176-1-rui.zhang@intel.com
 2023-11-09 14:33:30 +01:00
Rick Edgecombe
31255e072b x86/shstk: Delay signal entry SSP write until after user accesses 
When a signal is being delivered, the kernel needs to make accesses to
userspace. These accesses could encounter an access error, in which case
the signal delivery itself will trigger a segfault. Usually this would
result in the kernel killing the process. But in the case of a SEGV signal
handler being configured, the failure of the first signal delivery will
result in *another* signal getting delivered. The second signal may
succeed if another thread has resolved the issue that triggered the
segfault (i.e. a well timed mprotect()/mmap()), or the second signal is
being delivered to another stack (i.e. an alt stack).

On x86, in the non-shadow stack case, all the accesses to userspace are
done before changes to the registers (in pt_regs). The operation is
aborted when an access error occurs, so although there may be writes done
for the first signal, control flow changes for the signal (regs->ip,
regs->sp, etc) are not committed until all the accesses have already
completed successfully. This means that the second signal will be
delivered as if it happened at the time of the first signal. It will
effectively replace the first aborted signal, overwriting the half-written
frame of the aborted signal. So on sigreturn from the second signal,
control flow will resume happily from the point of control flow where the
original signal was delivered.

The problem is, when shadow stack is active, the shadow stack SSP
register/MSR is updated *before* some of the userspace accesses. This
means if the earlier accesses succeed and the later ones fail, the second
signal will not be delivered at the same spot on the shadow stack as the
first one. So on sigreturn from the second signal, the SSP will be
pointing to the wrong location on the shadow stack (off by a frame).

Pengfei privately reported that while using a shadow stack enabled glibc,
the “signal06” test in the LTP test-suite hung. It turns out it is
testing the above described double signal scenario. When this test was
compiled with shadow stack, the first signal pushed a shadow stack
sigframe, then the second pushed another. When the second signal was
handled, the SSP was at the first shadow stack signal frame instead of
the original location. The test then got stuck as the #CP from the twice
incremented SSP was incorrect and generated segfaults in a loop.

Fix this by adjusting the SSP register only after any userspace accesses,
such that there can be no failures after the SSP is adjusted. Do this by
moving the shadow stack sigframe push logic to happen after all other
userspace accesses.

Note, sigreturn (as opposed to the signal delivery dealt with in this
patch) has ordering behavior that could lead to similar failures. The
ordering issues there extend beyond shadow stack to include the alt stack
restoration. Fixing that would require cross-arch changes, and the
ordering today does not cause any known test or apps breakages. So leave
it as is, for now.

[ dhansen: minor changelog/subject tweak ]

Fixes: 05e36022c054 ("x86/shstk: Handle signals for shadow stack")
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20231107182251.91276-1-rick.p.edgecombe%40intel.com
Link: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/signal/signal06.c
 2023-11-08 08:55:37 -08:00
Linus Torvalds
5e2cb28dd7 configfs-tsm for v6.7 
- Introduce configfs-tsm as a shared ABI for confidential computing
   attestation reports
 
 - Convert sev-guest to additionally support configfs-tsm alongside its
   vendor specific ioctl()
 
 - Added signed attestation report retrieval to the tdx-guest driver
   forgoing a new vendor specific ioctl()
 
 - Misc. cleanups and a new __free() annotation for kvfree()
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Merge tag 'tsm-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/linux

Pull unified attestation reporting from Dan Williams:
 "In an ideal world there would be a cross-vendor standard attestation
  report format for confidential guests along with a common device
  definition to act as the transport.

  In the real world the situation ended up with multiple platform
  vendors inventing their own attestation report formats with the
  SEV-SNP implementation being a first mover to define a custom
  sev-guest character device and corresponding ioctl(). Later, this
  configfs-tsm proposal intercepted an attempt to add a tdx-guest
  character device and a corresponding new ioctl(). It also anticipated
  ARM and RISC-V showing up with more chardevs and more ioctls().

  The proposal takes for granted that Linux tolerates the vendor report
  format differentiation until a standard arrives. From talking with
  folks involved, it sounds like that standardization work is unlikely
  to resolve anytime soon. It also takes the position that kernfs ABIs
  are easier to maintain than ioctl(). The result is a shared configfs
  mechanism to return per-vendor report-blobs with the option to later
  support a standard when that arrives.

  Part of the goal here also is to get the community into the
  "uncomfortable, but beneficial to the long term maintainability of the
  kernel" state of talking to each other about their differentiation and
  opportunities to collaborate. Think of this like the device-driver
  equivalent of the common memory-management infrastructure for
  confidential-computing being built up in KVM.

  As for establishing an "upstream path for cross-vendor
  confidential-computing device driver infrastructure" this is something
  I want to discuss at Plumbers. At present, the multiple vendor
  proposals for assigning devices to confidential computing VMs likely
  needs a new dedicated repository and maintainer team, but that is a
  discussion for v6.8.

  For now, Greg and Thomas have acked this approach and this is passing
  is AMD, Intel, and Google tests.

  Summary:

   - Introduce configfs-tsm as a shared ABI for confidential computing
     attestation reports

   - Convert sev-guest to additionally support configfs-tsm alongside
     its vendor specific ioctl()

   - Added signed attestation report retrieval to the tdx-guest driver
     forgoing a new vendor specific ioctl()

   - Misc cleanups and a new __free() annotation for kvfree()"

* tag 'tsm-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/linux:
  virt: tdx-guest: Add Quote generation support using TSM_REPORTS
  virt: sevguest: Add TSM_REPORTS support for SNP_GET_EXT_REPORT
  mm/slab: Add __free() support for kvfree
  virt: sevguest: Prep for kernel internal get_ext_report()
  configfs-tsm: Introduce a shared ABI for attestation reports
  virt: coco: Add a coco/Makefile and coco/Kconfig
  virt: sevguest: Fix passing a stack buffer as a scatterlist target
 2023-11-04 15:58:13 -10:00
Linus Torvalds
0a23fb262d Major microcode loader restructuring, cleanup and improvements by Thomas 
Gleixner:
 
 - Restructure the code needed for it and add a temporary initrd mapping
   on 32-bit so that the loader can access the microcode blobs. This in
   itself is a preparation for the next major improvement:
 
 - Do not load microcode on 32-bit before paging has been enabled.
   Handling this has caused an endless stream of headaches, issues, ugly
   code and unnecessary hacks in the past. And there really wasn't any
   sensible reason to do that in the first place. So switch the 32-bit
   loading to happen after paging has been enabled and turn the loader
   code "real purrty" again
 
 - Drop mixed microcode steppings loading on Intel - there, a single patch
   loaded on the whole system is sufficient
 
 - Rework late loading to track which CPUs have updated microcode
   successfully and which haven't, act accordingly
 
 - Move late microcode loading on Intel in NMI context in order to
   guarantee concurrent loading on all threads
 
 - Make the late loading CPU-hotplug-safe and have the offlined threads
   be woken up for the purpose of the update
 
 - Add support for a minimum revision which determines whether late
   microcode loading is safe on a machine and the microcode does not
   change software visible features which the machine cannot use anyway
   since feature detection has happened already. Roughly, the minimum
   revision is the smallest revision number which must be loaded
   currently on the system so that late updates can be allowed
 
 - Other nice leanups, fixess, etc all over the place
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Merge tag 'x86_microcode_for_v6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 microcode loading updates from Borislac Petkov:
 "Major microcode loader restructuring, cleanup and improvements by
  Thomas Gleixner:

   - Restructure the code needed for it and add a temporary initrd
     mapping on 32-bit so that the loader can access the microcode
     blobs. This in itself is a preparation for the next major
     improvement:

   - Do not load microcode on 32-bit before paging has been enabled.

     Handling this has caused an endless stream of headaches, issues,
     ugly code and unnecessary hacks in the past. And there really
     wasn't any sensible reason to do that in the first place. So switch
     the 32-bit loading to happen after paging has been enabled and turn
     the loader code "real purrty" again

   - Drop mixed microcode steppings loading on Intel - there, a single
     patch loaded on the whole system is sufficient

   - Rework late loading to track which CPUs have updated microcode
     successfully and which haven't, act accordingly

   - Move late microcode loading on Intel in NMI context in order to
     guarantee concurrent loading on all threads

   - Make the late loading CPU-hotplug-safe and have the offlined
     threads be woken up for the purpose of the update

   - Add support for a minimum revision which determines whether late
     microcode loading is safe on a machine and the microcode does not
     change software visible features which the machine cannot use
     anyway since feature detection has happened already. Roughly, the
     minimum revision is the smallest revision number which must be
     loaded currently on the system so that late updates can be allowed

   - Other nice leanups, fixess, etc all over the place"

* tag 'x86_microcode_for_v6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  x86/microcode/intel: Add a minimum required revision for late loading
  x86/microcode: Prepare for minimal revision check
  x86/microcode: Handle "offline" CPUs correctly
  x86/apic: Provide apic_force_nmi_on_cpu()
  x86/microcode: Protect against instrumentation
  x86/microcode: Rendezvous and load in NMI
  x86/microcode: Replace the all-in-one rendevous handler
  x86/microcode: Provide new control functions
  x86/microcode: Add per CPU control field
  x86/microcode: Add per CPU result state
  x86/microcode: Sanitize __wait_for_cpus()
  x86/microcode: Clarify the late load logic
  x86/microcode: Handle "nosmt" correctly
  x86/microcode: Clean up mc_cpu_down_prep()
  x86/microcode: Get rid of the schedule work indirection
  x86/microcode: Mop up early loading leftovers
  x86/microcode/amd: Use cached microcode for AP load
  x86/microcode/amd: Cache builtin/initrd microcode early
  x86/microcode/amd: Cache builtin microcode too
  x86/microcode/amd: Use correct per CPU ucode_cpu_info
  ...
 2023-11-04 08:46:37 -10:00
Linus Torvalds
5c5e048b24 Kbuild updates for v6.7 
- Implement the binary search in modpost for faster symbol lookup
 
  - Respect HOSTCC when linking host programs written in Rust
 
  - Change the binrpm-pkg target to generate kernel-devel RPM package
 
  - Fix endianness issues for tee and ishtp MODULE_DEVICE_TABLE
 
  - Unify vdso_install rules
 
  - Remove unused __memexit* annotations
 
  - Eliminate stale whitelisting for __devinit/__devexit from modpost
 
  - Enable dummy-tools to handle the -fpatchable-function-entry flag
 
  - Add 'userldlibs' syntax
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Merge tag 'kbuild-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Implement the binary search in modpost for faster symbol lookup

 - Respect HOSTCC when linking host programs written in Rust

 - Change the binrpm-pkg target to generate kernel-devel RPM package

 - Fix endianness issues for tee and ishtp MODULE_DEVICE_TABLE

 - Unify vdso_install rules

 - Remove unused __memexit* annotations

 - Eliminate stale whitelisting for __devinit/__devexit from modpost

 - Enable dummy-tools to handle the -fpatchable-function-entry flag

 - Add 'userldlibs' syntax

* tag 'kbuild-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits)
  kbuild: support 'userldlibs' syntax
  kbuild: dummy-tools: pretend we understand -fpatchable-function-entry
  kbuild: Correct missing architecture-specific hyphens
  modpost: squash ALL_{INIT,EXIT}_TEXT_SECTIONS to ALL_TEXT_SECTIONS
  modpost: merge sectioncheck table entries regarding init/exit sections
  modpost: use ALL_INIT_SECTIONS for the section check from DATA_SECTIONS
  modpost: disallow the combination of EXPORT_SYMBOL and __meminit*
  modpost: remove EXIT_SECTIONS macro
  modpost: remove MEM_INIT_SECTIONS macro
  modpost: remove more symbol patterns from the section check whitelist
  modpost: disallow *driver to reference .meminit* sections
  linux/init: remove __memexit* annotations
  modpost: remove ALL_EXIT_DATA_SECTIONS macro
  kbuild: simplify cmd_ld_multi_m
  kbuild: avoid too many execution of scripts/pahole-flags.sh
  kbuild: remove ARCH_POSTLINK from module builds
  kbuild: unify no-compiler-targets and no-sync-config-targets
  kbuild: unify vdso_install rules
  docs: kbuild: add INSTALL_DTBS_PATH
  UML: remove unused cmd_vdso_install
  ...
 2023-11-04 08:07:19 -10:00
Linus Torvalds
1f24458a10 TTY/Serial changes for 6.7-rc1 
Here is the big set of tty/serial driver changes for 6.7-rc1.  Included
 in here are:
   - console/vgacon cleanups and removals from Arnd
   - tty core and n_tty cleanups from Jiri
   - lots of 8250 driver updates and cleanups
   - sc16is7xx serial driver updates
   - dt binding updates
   - first set of port lock wrapers from Thomas for the printk fixes
     coming in future releases
   - other small serial and tty core cleanups and updates
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty and serial updates from Greg KH:
 "Here is the big set of tty/serial driver changes for 6.7-rc1. Included
  in here are:

   - console/vgacon cleanups and removals from Arnd

   - tty core and n_tty cleanups from Jiri

   - lots of 8250 driver updates and cleanups

   - sc16is7xx serial driver updates

   - dt binding updates

   - first set of port lock wrapers from Thomas for the printk fixes
     coming in future releases

   - other small serial and tty core cleanups and updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (193 commits)
  serdev: Replace custom code with device_match_acpi_handle()
  serdev: Simplify devm_serdev_device_open() function
  serdev: Make use of device_set_node()
  tty: n_gsm: add copyright Siemens Mobility GmbH
  tty: n_gsm: fix race condition in status line change on dead connections
  serial: core: Fix runtime PM handling for pending tx
  vgacon: fix mips/sibyte build regression
  dt-bindings: serial: drop unsupported samsung bindings
  tty: serial: samsung: drop earlycon support for unsupported platforms
  tty: 8250: Add note for PX-835
  tty: 8250: Fix IS-200 PCI ID comment
  tty: 8250: Add Brainboxes Oxford Semiconductor-based quirks
  tty: 8250: Add support for Intashield IX cards
  tty: 8250: Add support for additional Brainboxes PX cards
  tty: 8250: Fix up PX-803/PX-857
  tty: 8250: Fix port count of PX-257
  tty: 8250: Add support for Intashield IS-100
  tty: 8250: Add support for Brainboxes UP cards
  tty: 8250: Add support for additional Brainboxes UC cards
  tty: 8250: Remove UC-257 and UC-431
  ...
 2023-11-03 15:44:25 -10:00
Linus Torvalds
8f6f76a6a2 As usual, lots of singleton and doubleton patches all over the tree and 
there's little I can say which isn't in the individual changelogs.
 
 The lengthier patch series are
 
 - "kdump: use generic functions to simplify crashkernel reservation in
   arch", from Baoquan He.  This is mainly cleanups and consolidation of
   the "crashkernel=" kernel parameter handling.
 
 - After much discussion, David Laight's "minmax: Relax type checks in
   min() and max()" is here.  Hopefully reduces some typecasting and the
   use of min_t() and max_t().
 
 - A group of patches from Oleg Nesterov which clean up and slightly fix
   our handling of reads from /proc/PID/task/...  and which remove
   task_struct.therad_group.
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Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "As usual, lots of singleton and doubleton patches all over the tree
  and there's little I can say which isn't in the individual changelogs.

  The lengthier patch series are

   - 'kdump: use generic functions to simplify crashkernel reservation
     in arch', from Baoquan He. This is mainly cleanups and
     consolidation of the 'crashkernel=' kernel parameter handling

   - After much discussion, David Laight's 'minmax: Relax type checks in
     min() and max()' is here. Hopefully reduces some typecasting and
     the use of min_t() and max_t()

   - A group of patches from Oleg Nesterov which clean up and slightly
     fix our handling of reads from /proc/PID/task/... and which remove
     task_struct.thread_group"

* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
  scripts/gdb/vmalloc: disable on no-MMU
  scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
  .mailmap: add address mapping for Tomeu Vizoso
  mailmap: update email address for Claudiu Beznea
  tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
  .mailmap: map Benjamin Poirier's address
  scripts/gdb: add lx_current support for riscv
  ocfs2: fix a spelling typo in comment
  proc: test ProtectionKey in proc-empty-vm test
  proc: fix proc-empty-vm test with vsyscall
  fs/proc/base.c: remove unneeded semicolon
  do_io_accounting: use sig->stats_lock
  do_io_accounting: use __for_each_thread()
  ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
  ocfs2: fix a typo in a comment
  scripts/show_delta: add __main__ judgement before main code
  treewide: mark stuff as __ro_after_init
  fs: ocfs2: check status values
  proc: test /proc/${pid}/statm
  compiler.h: move __is_constexpr() to compiler.h
  ...
 2023-11-02 20:53:31 -10:00
Linus Torvalds
ecae0bd517 Many singleton patches against the MM code. The patch series which are 
included in this merge do the following:
 
 - Kemeng Shi has contributed some compation maintenance work in the
   series "Fixes and cleanups to compaction".
 
 - Joel Fernandes has a patchset ("Optimize mremap during mutual
   alignment within PMD") which fixes an obscure issue with mremap()'s
   pagetable handling during a subsequent exec(), based upon an
   implementation which Linus suggested.
 
 - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the
   following patch series:
 
 	mm/damon: misc fixups for documents, comments and its tracepoint
 	mm/damon: add a tracepoint for damos apply target regions
 	mm/damon: provide pseudo-moving sum based access rate
 	mm/damon: implement DAMOS apply intervals
 	mm/damon/core-test: Fix memory leaks in core-test
 	mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
 
 - In the series "Do not try to access unaccepted memory" Adrian Hunter
   provides some fixups for the recently-added "unaccepted memory' feature.
   To increase the feature's checking coverage.  "Plug a few gaps where
   RAM is exposed without checking if it is unaccepted memory".
 
 - In the series "cleanups for lockless slab shrink" Qi Zheng has done
   some maintenance work which is preparation for the lockless slab
   shrinking code.
 
 - Qi Zheng has redone the earlier (and reverted) attempt to make slab
   shrinking lockless in the series "use refcount+RCU method to implement
   lockless slab shrink".
 
 - David Hildenbrand contributes some maintenance work for the rmap code
   in the series "Anon rmap cleanups".
 
 - Kefeng Wang does more folio conversions and some maintenance work in
   the migration code.  Series "mm: migrate: more folio conversion and
   unification".
 
 - Matthew Wilcox has fixed an issue in the buffer_head code which was
   causing long stalls under some heavy memory/IO loads.  Some cleanups
   were added on the way.  Series "Add and use bdev_getblk()".
 
 - In the series "Use nth_page() in place of direct struct page
   manipulation" Zi Yan has fixed a potential issue with the direct
   manipulation of hugetlb page frames.
 
 - In the series "mm: hugetlb: Skip initialization of gigantic tail
   struct pages if freed by HVO" has improved our handling of gigantic
   pages in the hugetlb vmmemmep optimizaton code.  This provides
   significant boot time improvements when significant amounts of gigantic
   pages are in use.
 
 - Matthew Wilcox has sent the series "Small hugetlb cleanups" - code
   rationalization and folio conversions in the hugetlb code.
 
 - Yin Fengwei has improved mlock()'s handling of large folios in the
   series "support large folio for mlock"
 
 - In the series "Expose swapcache stat for memcg v1" Liu Shixin has
   added statistics for memcg v1 users which are available (and useful)
   under memcg v2.
 
 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
   prctl so that userspace may direct the kernel to not automatically
   propagate the denial to child processes.  The series is named "MDWE
   without inheritance".
 
 - Kefeng Wang has provided the series "mm: convert numa balancing
   functions to use a folio" which does what it says.
 
 - In the series "mm/ksm: add fork-exec support for prctl" Stefan Roesch
   makes is possible for a process to propagate KSM treatment across
   exec().
 
 - Huang Ying has enhanced memory tiering's calculation of memory
   distances.  This is used to permit the dax/kmem driver to use "high
   bandwidth memory" in addition to Optane Data Center Persistent Memory
   Modules (DCPMM).  The series is named "memory tiering: calculate
   abstract distance based on ACPI HMAT"
 
 - In the series "Smart scanning mode for KSM" Stefan Roesch has
   optimized KSM by teaching it to retain and use some historical
   information from previous scans.
 
 - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the
   series "mm: memcg: fix tracking of pending stats updates values".
 
 - In the series "Implement IOCTL to get and optionally clear info about
   PTEs" Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits
   us to atomically read-then-clear page softdirty state.  This is mainly
   used by CRIU.
 
 - Hugh Dickins contributed the series "shmem,tmpfs: general maintenance"
   - a bunch of relatively minor maintenance tweaks to this code.
 
 - Matthew Wilcox has increased the use of the VMA lock over file-backed
   page faults in the series "Handle more faults under the VMA lock".  Some
   rationalizations of the fault path became possible as a result.
 
 - In the series "mm/rmap: convert page_move_anon_rmap() to
   folio_move_anon_rmap()" David Hildenbrand has implemented some cleanups
   and folio conversions.
 
 - In the series "various improvements to the GUP interface" Lorenzo
   Stoakes has simplified and improved the GUP interface with an eye to
   providing groundwork for future improvements.
 
 - Andrey Konovalov has sent along the series "kasan: assorted fixes and
   improvements" which does those things.
 
 - Some page allocator maintenance work from Kemeng Shi in the series
   "Two minor cleanups to break_down_buddy_pages".
 
 - In thes series "New selftest for mm" Breno Leitao has developed
   another MM self test which tickles a race we had between madvise() and
   page faults.
 
 - In the series "Add folio_end_read" Matthew Wilcox provides cleanups
   and an optimization to the core pagecache code.
 
 - Nhat Pham has added memcg accounting for hugetlb memory in the series
   "hugetlb memcg accounting".
 
 - Cleanups and rationalizations to the pagemap code from Lorenzo
   Stoakes, in the series "Abstract vma_merge() and split_vma()".
 
 - Audra Mitchell has fixed issues in the procfs page_owner code's new
   timestamping feature which was causing some misbehaviours.  In the
   series "Fix page_owner's use of free timestamps".
 
 - Lorenzo Stoakes has fixed the handling of new mappings of sealed files
   in the series "permit write-sealed memfd read-only shared mappings".
 
 - Mike Kravetz has optimized the hugetlb vmemmap optimization in the
   series "Batch hugetlb vmemmap modification operations".
 
 - Some buffer_head folio conversions and cleanups from Matthew Wilcox in
   the series "Finish the create_empty_buffers() transition".
 
 - As a page allocator performance optimization Huang Ying has added
   automatic tuning to the allocator's per-cpu-pages feature, in the series
   "mm: PCP high auto-tuning".
 
 - Roman Gushchin has contributed the patchset "mm: improve performance
   of accounted kernel memory allocations" which improves their performance
   by ~30% as measured by a micro-benchmark.
 
 - folio conversions from Kefeng Wang in the series "mm: convert page
   cpupid functions to folios".
 
 - Some kmemleak fixups in Liu Shixin's series "Some bugfix about
   kmemleak".
 
 - Qi Zheng has improved our handling of memoryless nodes by keeping them
   off the allocation fallback list.  This is done in the series "handle
   memoryless nodes more appropriately".
 
 - khugepaged conversions from Vishal Moola in the series "Some
   khugepaged folio conversions".
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Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Many singleton patches against the MM code. The patch series which are
  included in this merge do the following:

   - Kemeng Shi has contributed some compation maintenance work in the
     series 'Fixes and cleanups to compaction'

   - Joel Fernandes has a patchset ('Optimize mremap during mutual
     alignment within PMD') which fixes an obscure issue with mremap()'s
     pagetable handling during a subsequent exec(), based upon an
     implementation which Linus suggested

   - More DAMON/DAMOS maintenance and feature work from SeongJae Park i
     the following patch series:

	mm/damon: misc fixups for documents, comments and its tracepoint
	mm/damon: add a tracepoint for damos apply target regions
	mm/damon: provide pseudo-moving sum based access rate
	mm/damon: implement DAMOS apply intervals
	mm/damon/core-test: Fix memory leaks in core-test
	mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval

   - In the series 'Do not try to access unaccepted memory' Adrian
     Hunter provides some fixups for the recently-added 'unaccepted
     memory' feature. To increase the feature's checking coverage. 'Plug
     a few gaps where RAM is exposed without checking if it is
     unaccepted memory'

   - In the series 'cleanups for lockless slab shrink' Qi Zheng has done
     some maintenance work which is preparation for the lockless slab
     shrinking code

   - Qi Zheng has redone the earlier (and reverted) attempt to make slab
     shrinking lockless in the series 'use refcount+RCU method to
     implement lockless slab shrink'

   - David Hildenbrand contributes some maintenance work for the rmap
     code in the series 'Anon rmap cleanups'

   - Kefeng Wang does more folio conversions and some maintenance work
     in the migration code. Series 'mm: migrate: more folio conversion
     and unification'

   - Matthew Wilcox has fixed an issue in the buffer_head code which was
     causing long stalls under some heavy memory/IO loads. Some cleanups
     were added on the way. Series 'Add and use bdev_getblk()'

   - In the series 'Use nth_page() in place of direct struct page
     manipulation' Zi Yan has fixed a potential issue with the direct
     manipulation of hugetlb page frames

   - In the series 'mm: hugetlb: Skip initialization of gigantic tail
     struct pages if freed by HVO' has improved our handling of gigantic
     pages in the hugetlb vmmemmep optimizaton code. This provides
     significant boot time improvements when significant amounts of
     gigantic pages are in use

   - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code
     rationalization and folio conversions in the hugetlb code

   - Yin Fengwei has improved mlock()'s handling of large folios in the
     series 'support large folio for mlock'

   - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has
     added statistics for memcg v1 users which are available (and
     useful) under memcg v2

   - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
     prctl so that userspace may direct the kernel to not automatically
     propagate the denial to child processes. The series is named 'MDWE
     without inheritance'

   - Kefeng Wang has provided the series 'mm: convert numa balancing
     functions to use a folio' which does what it says

   - In the series 'mm/ksm: add fork-exec support for prctl' Stefan
     Roesch makes is possible for a process to propagate KSM treatment
     across exec()

   - Huang Ying has enhanced memory tiering's calculation of memory
     distances. This is used to permit the dax/kmem driver to use 'high
     bandwidth memory' in addition to Optane Data Center Persistent
     Memory Modules (DCPMM). The series is named 'memory tiering:
     calculate abstract distance based on ACPI HMAT'

   - In the series 'Smart scanning mode for KSM' Stefan Roesch has
     optimized KSM by teaching it to retain and use some historical
     information from previous scans

   - Yosry Ahmed has fixed some inconsistencies in memcg statistics in
     the series 'mm: memcg: fix tracking of pending stats updates
     values'

   - In the series 'Implement IOCTL to get and optionally clear info
     about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap
     which permits us to atomically read-then-clear page softdirty
     state. This is mainly used by CRIU

   - Hugh Dickins contributed the series 'shmem,tmpfs: general
     maintenance', a bunch of relatively minor maintenance tweaks to
     this code

   - Matthew Wilcox has increased the use of the VMA lock over
     file-backed page faults in the series 'Handle more faults under the
     VMA lock'. Some rationalizations of the fault path became possible
     as a result

   - In the series 'mm/rmap: convert page_move_anon_rmap() to
     folio_move_anon_rmap()' David Hildenbrand has implemented some
     cleanups and folio conversions

   - In the series 'various improvements to the GUP interface' Lorenzo
     Stoakes has simplified and improved the GUP interface with an eye
     to providing groundwork for future improvements

   - Andrey Konovalov has sent along the series 'kasan: assorted fixes
     and improvements' which does those things

   - Some page allocator maintenance work from Kemeng Shi in the series
     'Two minor cleanups to break_down_buddy_pages'

   - In thes series 'New selftest for mm' Breno Leitao has developed
     another MM self test which tickles a race we had between madvise()
     and page faults

   - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups
     and an optimization to the core pagecache code

   - Nhat Pham has added memcg accounting for hugetlb memory in the
     series 'hugetlb memcg accounting'

   - Cleanups and rationalizations to the pagemap code from Lorenzo
     Stoakes, in the series 'Abstract vma_merge() and split_vma()'

   - Audra Mitchell has fixed issues in the procfs page_owner code's new
     timestamping feature which was causing some misbehaviours. In the
     series 'Fix page_owner's use of free timestamps'

   - Lorenzo Stoakes has fixed the handling of new mappings of sealed
     files in the series 'permit write-sealed memfd read-only shared
     mappings'

   - Mike Kravetz has optimized the hugetlb vmemmap optimization in the
     series 'Batch hugetlb vmemmap modification operations'

   - Some buffer_head folio conversions and cleanups from Matthew Wilcox
     in the series 'Finish the create_empty_buffers() transition'

   - As a page allocator performance optimization Huang Ying has added
     automatic tuning to the allocator's per-cpu-pages feature, in the
     series 'mm: PCP high auto-tuning'

   - Roman Gushchin has contributed the patchset 'mm: improve
     performance of accounted kernel memory allocations' which improves
     their performance by ~30% as measured by a micro-benchmark

   - folio conversions from Kefeng Wang in the series 'mm: convert page
     cpupid functions to folios'

   - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about
     kmemleak'

   - Qi Zheng has improved our handling of memoryless nodes by keeping
     them off the allocation fallback list. This is done in the series
     'handle memoryless nodes more appropriately'

   - khugepaged conversions from Vishal Moola in the series 'Some
     khugepaged folio conversions'"

[ bcachefs conflicts with the dynamically allocated shrinkers have been
  resolved as per Stephen Rothwell in

     https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/

  with help from Qi Zheng.

  The clone3 test filtering conflict was half-arsed by yours truly ]

* tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits)
  mm/damon/sysfs: update monitoring target regions for online input commit
  mm/damon/sysfs: remove requested targets when online-commit inputs
  selftests: add a sanity check for zswap
  Documentation: maple_tree: fix word spelling error
  mm/vmalloc: fix the unchecked dereference warning in vread_iter()
  zswap: export compression failure stats
  Documentation: ubsan: drop "the" from article title
  mempolicy: migration attempt to match interleave nodes
  mempolicy: mmap_lock is not needed while migrating folios
  mempolicy: alloc_pages_mpol() for NUMA policy without vma
  mm: add page_rmappable_folio() wrapper
  mempolicy: remove confusing MPOL_MF_LAZY dead code
  mempolicy: mpol_shared_policy_init() without pseudo-vma
  mempolicy trivia: use pgoff_t in shared mempolicy tree
  mempolicy trivia: slightly more consistent naming
  mempolicy trivia: delete those ancient pr_debug()s
  mempolicy: fix migrate_pages(2) syscall return nr_failed
  kernfs: drop shared NUMA mempolicy hooks
  hugetlbfs: drop shared NUMA mempolicy pretence
  mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()
  ...
 2023-11-02 19:38:47 -10:00
Linus Torvalds
bc3012f4e3 This update includes the following changes: 
API:
 
 - Add virtual-address based lskcipher interface.
 - Optimise ahash/shash performance in light of costly indirect calls.
 - Remove ahash alignmask attribute.
 
 Algorithms:
 
 - Improve AES/XTS performance of 6-way unrolling for ppc.
 - Remove some uses of obsolete algorithms (md4, md5, sha1).
 - Add FIPS 202 SHA-3 support in pkcs1pad.
 - Add fast path for single-page messages in adiantum.
 - Remove zlib-deflate.
 
 Drivers:
 
 - Add support for S4 in meson RNG driver.
 - Add STM32MP13x support in stm32.
 - Add hwrng interface support in qcom-rng.
 - Add support for deflate algorithm in hisilicon/zip.
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Merge tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Add virtual-address based lskcipher interface
   - Optimise ahash/shash performance in light of costly indirect calls
   - Remove ahash alignmask attribute

  Algorithms:
   - Improve AES/XTS performance of 6-way unrolling for ppc
   - Remove some uses of obsolete algorithms (md4, md5, sha1)
   - Add FIPS 202 SHA-3 support in pkcs1pad
   - Add fast path for single-page messages in adiantum
   - Remove zlib-deflate

  Drivers:
   - Add support for S4 in meson RNG driver
   - Add STM32MP13x support in stm32
   - Add hwrng interface support in qcom-rng
   - Add support for deflate algorithm in hisilicon/zip"

* tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (283 commits)
  crypto: adiantum - flush destination page before unmapping
  crypto: testmgr - move pkcs1pad(rsa,sha3-*) to correct place
  Documentation/module-signing.txt: bring up to date
  module: enable automatic module signing with FIPS 202 SHA-3
  crypto: asymmetric_keys - allow FIPS 202 SHA-3 signatures
  crypto: rsa-pkcs1pad - Add FIPS 202 SHA-3 support
  crypto: FIPS 202 SHA-3 register in hash info for IMA
  x509: Add OIDs for FIPS 202 SHA-3 hash and signatures
  crypto: ahash - optimize performance when wrapping shash
  crypto: ahash - check for shash type instead of not ahash type
  crypto: hash - move "ahash wrapping shash" functions to ahash.c
  crypto: talitos - stop using crypto_ahash::init
  crypto: chelsio - stop using crypto_ahash::init
  crypto: ahash - improve file comment
  crypto: ahash - remove struct ahash_request_priv
  crypto: ahash - remove crypto_ahash_alignmask
  crypto: gcm - stop using alignmask of ahash
  crypto: chacha20poly1305 - stop using alignmask of ahash
  crypto: ccm - stop using alignmask of ahash
  net: ipv6: stop checking crypto_ahash_alignmask
  ...
 2023-11-02 16:15:30 -10:00
Linus Torvalds
6803bd7956 ARM: 
* Generalized infrastructure for 'writable' ID registers, effectively
   allowing userspace to opt-out of certain vCPU features for its guest
 
 * Optimization for vSGI injection, opportunistically compressing MPIDR
   to vCPU mapping into a table
 
 * Improvements to KVM's PMU emulation, allowing userspace to select
   the number of PMCs available to a VM
 
 * Guest support for memory operation instructions (FEAT_MOPS)
 
 * Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing
   bugs and getting rid of useless code
 
 * Changes to the way the SMCCC filter is constructed, avoiding wasted
   memory allocations when not in use
 
 * Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing
   the overhead of errata mitigations
 
 * Miscellaneous kernel and selftest fixes
 
 LoongArch:
 
 * New architecture.  The hardware uses the same model as x86, s390
   and RISC-V, where guest/host mode is orthogonal to supervisor/user
   mode.  The virtualization extensions are very similar to MIPS,
   therefore the code also has some similarities but it's been cleaned
   up to avoid some of the historical bogosities that are found in
   arch/mips.  The kernel emulates MMU, timer and CSR accesses, while
   interrupt controllers are only emulated in userspace, at least for
   now.
 
 RISC-V:
 
 * Support for the Smstateen and Zicond extensions
 
 * Support for virtualizing senvcfg
 
 * Support for virtualized SBI debug console (DBCN)
 
 S390:
 
 * Nested page table management can be monitored through tracepoints
   and statistics
 
 x86:
 
 * Fix incorrect handling of VMX posted interrupt descriptor in KVM_SET_LAPIC,
   which could result in a dropped timer IRQ
 
 * Avoid WARN on systems with Intel IPI virtualization
 
 * Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs without
   forcing more common use cases to eat the extra memory overhead.
 
 * Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and
   SBPB, aka Selective Branch Predictor Barrier).
 
 * Fix a bug where restoring a vCPU snapshot that was taken within 1 second of
   creating the original vCPU would cause KVM to try to synchronize the vCPU's
   TSC and thus clobber the correct TSC being set by userspace.
 
 * Compute guest wall clock using a single TSC read to avoid generating an
   inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads.
 
 * "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain
   about a "Firmware Bug" if the bit isn't set for select F/M/S combos.
   Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to appease Windows Server
   2022.
 
 * Don't apply side effects to Hyper-V's synthetic timer on writes from
   userspace to fix an issue where the auto-enable behavior can trigger
   spurious interrupts, i.e. do auto-enabling only for guest writes.
 
 * Remove an unnecessary kick of all vCPUs when synchronizing the dirty log
   without PML enabled.
 
 * Advertise "support" for non-serializing FS/GS base MSR writes as appropriate.
 
 * Harden the fast page fault path to guard against encountering an invalid
   root when walking SPTEs.
 
 * Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n.
 
 * Use the fast path directly from the timer callback when delivering Xen
   timer events, instead of waiting for the next iteration of the run loop.
   This was not done so far because previously proposed code had races,
   but now care is taken to stop the hrtimer at critical points such as
   restarting the timer or saving the timer information for userspace.
 
 * Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag.
 
 * Optimize injection of PMU interrupts that are simultaneous with NMIs.
 
 * Usual handful of fixes for typos and other warts.
 
 x86 - MTRR/PAT fixes and optimizations:
 
 * Clean up code that deals with honoring guest MTRRs when the VM has
   non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.
 
 * Zap EPT entries when non-coherent DMA assignment stops/start to prevent
   using stale entries with the wrong memtype.
 
 * Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y.
   This was done as a workaround for virtual machine BIOSes that did not
   bother to clear CR0.CD (because ancient KVM/QEMU did not bother to
   set it, in turn), and there's zero reason to extend the quirk to
   also ignore guest PAT.
 
 x86 - SEV fixes:
 
 * Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while
   running an SEV-ES guest.
 
 * Clean up the recognition of emulation failures on SEV guests, when KVM would
   like to "skip" the instruction but it had already been partially emulated.
   This makes it possible to drop a hack that second guessed the (insufficient)
   information provided by the emulator, and just do the right thing.
 
 Documentation:
 
 * Various updates and fixes, mostly for x86
 
 * MTRR and PAT fixes and optimizations:
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM:

   - Generalized infrastructure for 'writable' ID registers, effectively
     allowing userspace to opt-out of certain vCPU features for its
     guest

   - Optimization for vSGI injection, opportunistically compressing
     MPIDR to vCPU mapping into a table

   - Improvements to KVM's PMU emulation, allowing userspace to select
     the number of PMCs available to a VM

   - Guest support for memory operation instructions (FEAT_MOPS)

   - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing
     bugs and getting rid of useless code

   - Changes to the way the SMCCC filter is constructed, avoiding wasted
     memory allocations when not in use

   - Load the stage-2 MMU context at vcpu_load() for VHE systems,
     reducing the overhead of errata mitigations

   - Miscellaneous kernel and selftest fixes

  LoongArch:

   - New architecture for kvm.

     The hardware uses the same model as x86, s390 and RISC-V, where
     guest/host mode is orthogonal to supervisor/user mode. The
     virtualization extensions are very similar to MIPS, therefore the
     code also has some similarities but it's been cleaned up to avoid
     some of the historical bogosities that are found in arch/mips. The
     kernel emulates MMU, timer and CSR accesses, while interrupt
     controllers are only emulated in userspace, at least for now.

  RISC-V:

   - Support for the Smstateen and Zicond extensions

   - Support for virtualizing senvcfg

   - Support for virtualized SBI debug console (DBCN)

  S390:

   - Nested page table management can be monitored through tracepoints
     and statistics

  x86:

   - Fix incorrect handling of VMX posted interrupt descriptor in
     KVM_SET_LAPIC, which could result in a dropped timer IRQ

   - Avoid WARN on systems with Intel IPI virtualization

   - Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs
     without forcing more common use cases to eat the extra memory
     overhead.

   - Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and
     SBPB, aka Selective Branch Predictor Barrier).

   - Fix a bug where restoring a vCPU snapshot that was taken within 1
     second of creating the original vCPU would cause KVM to try to
     synchronize the vCPU's TSC and thus clobber the correct TSC being
     set by userspace.

   - Compute guest wall clock using a single TSC read to avoid
     generating an inaccurate time, e.g. if the vCPU is preempted
     between multiple TSC reads.

   - "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which
     complain about a "Firmware Bug" if the bit isn't set for select
     F/M/S combos. Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to
     appease Windows Server 2022.

   - Don't apply side effects to Hyper-V's synthetic timer on writes
     from userspace to fix an issue where the auto-enable behavior can
     trigger spurious interrupts, i.e. do auto-enabling only for guest
     writes.

   - Remove an unnecessary kick of all vCPUs when synchronizing the
     dirty log without PML enabled.

   - Advertise "support" for non-serializing FS/GS base MSR writes as
     appropriate.

   - Harden the fast page fault path to guard against encountering an
     invalid root when walking SPTEs.

   - Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n.

   - Use the fast path directly from the timer callback when delivering
     Xen timer events, instead of waiting for the next iteration of the
     run loop. This was not done so far because previously proposed code
     had races, but now care is taken to stop the hrtimer at critical
     points such as restarting the timer or saving the timer information
     for userspace.

   - Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future
     flag.

   - Optimize injection of PMU interrupts that are simultaneous with
     NMIs.

   - Usual handful of fixes for typos and other warts.

  x86 - MTRR/PAT fixes and optimizations:

   - Clean up code that deals with honoring guest MTRRs when the VM has
     non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.

   - Zap EPT entries when non-coherent DMA assignment stops/start to
     prevent using stale entries with the wrong memtype.

   - Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y

     This was done as a workaround for virtual machine BIOSes that did
     not bother to clear CR0.CD (because ancient KVM/QEMU did not bother
     to set it, in turn), and there's zero reason to extend the quirk to
     also ignore guest PAT.

  x86 - SEV fixes:

   - Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts
     SHUTDOWN while running an SEV-ES guest.

   - Clean up the recognition of emulation failures on SEV guests, when
     KVM would like to "skip" the instruction but it had already been
     partially emulated. This makes it possible to drop a hack that
     second guessed the (insufficient) information provided by the
     emulator, and just do the right thing.

  Documentation:

   - Various updates and fixes, mostly for x86

   - MTRR and PAT fixes and optimizations"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (164 commits)
  KVM: selftests: Avoid using forced target for generating arm64 headers
  tools headers arm64: Fix references to top srcdir in Makefile
  KVM: arm64: Add tracepoint for MMIO accesses where ISV==0
  KVM: arm64: selftest: Perform ISB before reading PAR_EL1
  KVM: arm64: selftest: Add the missing .guest_prepare()
  KVM: arm64: Always invalidate TLB for stage-2 permission faults
  KVM: x86: Service NMI requests after PMI requests in VM-Enter path
  KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI
  KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs
  KVM: arm64: Refine _EL2 system register list that require trap reinjection
  arm64: Add missing _EL2 encodings
  arm64: Add missing _EL12 encodings
  KVM: selftests: aarch64: vPMU test for validating user accesses
  KVM: selftests: aarch64: vPMU register test for unimplemented counters
  KVM: selftests: aarch64: vPMU register test for implemented counters
  KVM: selftests: aarch64: Introduce vpmu_counter_access test
  tools: Import arm_pmuv3.h
  KVM: arm64: PMU: Allow userspace to limit PMCR_EL0.N for the guest
  KVM: arm64: Sanitize PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} before first run
  KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}
  ...
 2023-11-02 15:45:15 -10:00
Linus Torvalds
27beb3ca34 pci-v6.7-changes 
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Merge tag 'pci-v6.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Use acpi_evaluate_dsm_typed() instead of open-coding _DSM
     evaluation to learn device characteristics (Andy Shevchenko)

   - Tidy multi-function header checks using new PCI_HEADER_TYPE_MASK
     definition (Ilpo Järvinen)

   - Simplify config access error checking in various drivers (Ilpo
     Järvinen)

   - Use pcie_capability_clear_word() (not
     pcie_capability_clear_and_set_word()) when only clearing (Ilpo
     Järvinen)

   - Add pci_get_base_class() to simplify finding devices using base
     class only (ignoring subclass and programming interface) (Sui
     Jingfeng)

   - Add pci_is_vga(), which includes ancient PCI_CLASS_NOT_DEFINED_VGA
     devices from before the Class Code was added to PCI (Sui Jingfeng)

   - Use pci_is_vga() for vgaarb, sysfs "boot_vga", virtio, qxl to
     include ancient VGA devices (Sui Jingfeng)

  Resource management:

   - Make pci_assign_unassigned_resources() non-init because sparc uses
     it after init (Randy Dunlap)

  Driver binding:

   - Retain .remove() and .probe() callbacks (previously __init) because
     sysfs may cause them to be called later (Uwe Kleine-König)

   - Prevent xHCI driver from claiming AMD VanGogh USB3 DRD device, so
     it can be claimed by dwc3 instead (Vicki Pfau)

  PCI device hotplug:

   - Add Ampere Altra Attention Indicator extension driver for acpiphp
     (D Scott Phillips)

  Power management:

   - Quirk VideoPropulsion Torrent QN16e with longer delay after reset
     (Lukas Wunner)

   - Prevent users from overriding drivers that say we shouldn't use
     D3cold (Lukas Wunner)

   - Avoid PME from D3hot/D3cold for AMD Rembrandt and Phoenix USB4
     because wakeup interrupts from those states don't work if amd-pmc
     has put the platform in a hardware sleep state (Mario Limonciello)

  IOMMU:

   - Disable ATS for Intel IPU E2000 devices with invalidation message
     endianness erratum (Bartosz Pawlowski)

  Error handling:

   - Factor out interrupt enable/disable into helpers (Kai-Heng Feng)

  Peer-to-peer DMA:

   - Fix flexible-array usage in struct pci_p2pdma_pagemap in case we
     ever use pagemaps with multiple entries (Gustavo A. R. Silva)

  ASPM:

   - Revert a change that broke when drivers disabled L1 and users later
     enabled an L1.x substate via sysfs, and fix a similar issue when
     users disabled L1 via sysfs (Heiner Kallweit)

  Endpoint framework:

   - Fix double free in __pci_epc_create() (Dan Carpenter)

   - Use IS_ERR_OR_NULL() to simplify endpoint core (Ruan Jinjie)

  Cadence PCIe controller driver:

   - Drop unused "is_rc" member (Li Chen)

  Freescale Layerscape PCIe controller driver:

   - Enable 64-bit addressing in endpoint mode (Guanhua Gao)

  Intel VMD host bridge driver:

   - Fix multi-function header check (Ilpo Järvinen)

  Microsoft Hyper-V host bridge driver:

   - Annotate struct hv_dr_state with __counted_by (Kees Cook)

  NVIDIA Tegra194 PCIe controller driver:

   - Drop setting of LNKCAP_MLW (max link width) since dw_pcie_setup()
     already does this via dw_pcie_link_set_max_link_width() (Yoshihiro
     Shimoda)

  Qualcomm PCIe controller driver:

   - Use PCIE_SPEED2MBS_ENC() to simplify encoding of link speed
     (Manivannan Sadhasivam)

   - Add a .write_dbi2() callback so DBI2 register writes, e.g., for
     setting the BAR size, work correctly (Manivannan Sadhasivam)

   - Enable ASPM for platforms that use 1.9.0 ops, because the PCI core
     doesn't enable ASPM states that haven't been enabled by the
     firmware (Manivannan Sadhasivam)

  Renesas R-Car Gen4 PCIe controller driver:

   - Add DesignWare core support (set max link width, EDMA_UNROLL flag,
     .pre_init(), .deinit(), etc) for use by R-Car Gen4 driver
     (Yoshihiro Shimoda)

   - Add driver and DT schema for DesignWare-based Renesas R-Car Gen4
     controller in both host and endpoint mode (Yoshihiro Shimoda)

  Xilinx NWL PCIe controller driver:

   - Update ECAM size to support 256 buses (Thippeswamy Havalige)

   - Stop setting bridge primary/secondary/subordinate bus numbers,
     since PCI core does this (Thippeswamy Havalige)

  Xilinx XDMA controller driver:

   - Add driver and DT schema for Zynq UltraScale+ MPSoCs devices with
     Xilinx XDMA Soft IP (Thippeswamy Havalige)

  Miscellaneous:

   - Use FIELD_GET()/FIELD_PREP() to simplify and reduce use of _SHIFT
     macros (Ilpo Järvinen, Bjorn Helgaas)

   - Remove logic_outb(), _outw(), outl() duplicate declarations (John
     Sanpe)

   - Replace unnecessary UTF-8 in Kconfig help text because menuconfig
     doesn't render it correctly (Liu Song)"

* tag 'pci-v6.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (102 commits)
  PCI: qcom-ep: Add dedicated callback for writing to DBI2 registers
  PCI: Simplify pcie_capability_clear_and_set_word() to ..._clear_word()
  PCI: endpoint: Fix double free in __pci_epc_create()
  PCI: xilinx-xdma: Add Xilinx XDMA Root Port driver
  dt-bindings: PCI: xilinx-xdma: Add schemas for Xilinx XDMA PCIe Root Port Bridge
  PCI: xilinx-cpm: Move IRQ definitions to a common header
  PCI: xilinx-nwl: Modify ECAM size to enable support for 256 buses
  PCI: xilinx-nwl: Rename the NWL_ECAM_VALUE_DEFAULT macro
  dt-bindings: PCI: xilinx-nwl: Modify ECAM size in the DT example
  PCI: xilinx-nwl: Remove redundant code that sets Type 1 header fields
  PCI: hotplug: Add Ampere Altra Attention Indicator extension driver
  PCI/AER: Factor out interrupt toggling into helpers
  PCI: acpiphp: Allow built-in drivers for Attention Indicators
  PCI/portdrv: Use FIELD_GET()
  PCI/VC: Use FIELD_GET()
  PCI/PTM: Use FIELD_GET()
  PCI/PME: Use FIELD_GET()
  PCI/ATS: Use FIELD_GET()
  PCI/ATS: Show PASID Capability register width in bitmasks
  PCI/ASPM: Fix L1 substate handling in aspm_attr_store_common()
  ...
 2023-11-02 14:05:18 -10:00
Linus Torvalds
426ee5196d sysctl-6.7-rc1 
To help make the move of sysctls out of kernel/sysctl.c not incur a size
 penalty sysctl has been changed to allow us to not require the sentinel, the
 final empty element on the sysctl array. Joel Granados has been doing all this
 work. On the v6.6 kernel we got the major infrastructure changes required to
 support this. For v6.7-rc1 we have all arch/ and drivers/ modified to remove
 the sentinel. Both arch and driver changes have been on linux-next for a bit
 less than a month. It is worth re-iterating the value:
 
   - this helps reduce the overall build time size of the kernel and run time
      memory consumed by the kernel by about ~64 bytes per array
   - the extra 64-byte penalty is no longer inncurred now when we move sysctls
     out from kernel/sysctl.c to their own files
 
 For v6.8-rc1 expect removal of all the sentinels and also then the unneeded
 check for procname == NULL.
 
 The last 2 patches are fixes recently merged by Krister Johansen which allow
 us again to use softlockup_panic early on boot. This used to work but the
 alias work broke it. This is useful for folks who want to detect softlockups
 super early rather than wait and spend money on cloud solutions with nothing
 but an eventual hung kernel. Although this hadn't gone through linux-next it's
 also a stable fix, so we might as well roll through the fixes now.
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Merge tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull sysctl updates from Luis Chamberlain:
 "To help make the move of sysctls out of kernel/sysctl.c not incur a
  size penalty sysctl has been changed to allow us to not require the
  sentinel, the final empty element on the sysctl array. Joel Granados
  has been doing all this work. On the v6.6 kernel we got the major
  infrastructure changes required to support this. For v6.7-rc1 we have
  all arch/ and drivers/ modified to remove the sentinel. Both arch and
  driver changes have been on linux-next for a bit less than a month. It
  is worth re-iterating the value:

   - this helps reduce the overall build time size of the kernel and run
     time memory consumed by the kernel by about ~64 bytes per array

   - the extra 64-byte penalty is no longer inncurred now when we move
     sysctls out from kernel/sysctl.c to their own files

  For v6.8-rc1 expect removal of all the sentinels and also then the
  unneeded check for procname == NULL.

  The last two patches are fixes recently merged by Krister Johansen
  which allow us again to use softlockup_panic early on boot. This used
  to work but the alias work broke it. This is useful for folks who want
  to detect softlockups super early rather than wait and spend money on
  cloud solutions with nothing but an eventual hung kernel. Although
  this hadn't gone through linux-next it's also a stable fix, so we
  might as well roll through the fixes now"

* tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (23 commits)
  watchdog: move softlockup_panic back to early_param
  proc: sysctl: prevent aliased sysctls from getting passed to init
  intel drm: Remove now superfluous sentinel element from ctl_table array
  Drivers: hv: Remove now superfluous sentinel element from ctl_table array
  raid: Remove now superfluous sentinel element from ctl_table array
  fw loader: Remove the now superfluous sentinel element from ctl_table array
  sgi-xp: Remove the now superfluous sentinel element from ctl_table array
  vrf: Remove the now superfluous sentinel element from ctl_table array
  char-misc: Remove the now superfluous sentinel element from ctl_table array
  infiniband: Remove the now superfluous sentinel element from ctl_table array
  macintosh: Remove the now superfluous sentinel element from ctl_table array
  parport: Remove the now superfluous sentinel element from ctl_table array
  scsi: Remove now superfluous sentinel element from ctl_table array
  tty: Remove now superfluous sentinel element from ctl_table array
  xen: Remove now superfluous sentinel element from ctl_table array
  hpet: Remove now superfluous sentinel element from ctl_table array
  c-sky: Remove now superfluous sentinel element from ctl_talbe array
  powerpc: Remove now superfluous sentinel element from ctl_table arrays
  riscv: Remove now superfluous sentinel element from ctl_table array
  x86/vdso: Remove now superfluous sentinel element from ctl_table array
  ...
 2023-11-01 20:51:41 -10:00
Linus Torvalds
1e0c505e13 asm-generic updates for v6.7 
The ia64 architecture gets its well-earned retirement as planned,
 now that there is one last (mostly) working release that will
 be maintained as an LTS kernel.
 
 The architecture specific system call tables are updated for
 the added map_shadow_stack() syscall and to remove references
 to the long-gone sys_lookup_dcookie() syscall.
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Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull ia64 removal and asm-generic updates from Arnd Bergmann:

 - The ia64 architecture gets its well-earned retirement as planned,
   now that there is one last (mostly) working release that will be
   maintained as an LTS kernel.

 - The architecture specific system call tables are updated for the
   added map_shadow_stack() syscall and to remove references to the
   long-gone sys_lookup_dcookie() syscall.

* tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  hexagon: Remove unusable symbols from the ptrace.h uapi
  asm-generic: Fix spelling of architecture
  arch: Reserve map_shadow_stack() syscall number for all architectures
  syscalls: Cleanup references to sys_lookup_dcookie()
  Documentation: Drop or replace remaining mentions of IA64
  lib/raid6: Drop IA64 support
  Documentation: Drop IA64 from feature descriptions
  kernel: Drop IA64 support from sig_fault handlers
  arch: Remove Itanium (IA-64) architecture
 2023-11-01 15:28:33 -10:00
Linus Torvalds
8999ad99f4 * Refactor and clean up TDX hypercall/module call infrastructure 
* Handle retrying/resuming page conversion hypercalls
  * Make sure to use the (shockingly) reliable TSC in TDX guests
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Merge tag 'x86_tdx_for_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 TDX updates from Dave Hansen:
 "The majority of this is a rework of the assembly and C wrappers that
  are used to talk to the TDX module and VMM. This is a nice cleanup in
  general but is also clearing the way for using this code when Linux is
  the TDX VMM.

  There are also some tidbits to make TDX guests play nicer with Hyper-V
  and to take advantage the hardware TSC.

  Summary:

   - Refactor and clean up TDX hypercall/module call infrastructure

   - Handle retrying/resuming page conversion hypercalls

   - Make sure to use the (shockingly) reliable TSC in TDX guests"

[ TLA reminder: TDX is "Trust Domain Extensions", Intel's guest VM
  confidentiality technology ]

* tag 'x86_tdx_for_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tdx: Mark TSC reliable
  x86/tdx: Fix __noreturn build warning around __tdx_hypercall_failed()
  x86/virt/tdx: Make TDX_MODULE_CALL handle SEAMCALL #UD and #GP
  x86/virt/tdx: Wire up basic SEAMCALL functions
  x86/tdx: Remove 'struct tdx_hypercall_args'
  x86/tdx: Reimplement __tdx_hypercall() using TDX_MODULE_CALL asm
  x86/tdx: Make TDX_HYPERCALL asm similar to TDX_MODULE_CALL
  x86/tdx: Extend TDX_MODULE_CALL to support more TDCALL/SEAMCALL leafs
  x86/tdx: Pass TDCALL/SEAMCALL input/output registers via a structure
  x86/tdx: Rename __tdx_module_call() to __tdcall()
  x86/tdx: Make macros of TDCALLs consistent with the spec
  x86/tdx: Skip saving output regs when SEAMCALL fails with VMFailInvalid
  x86/tdx: Zero out the missing RSI in TDX_HYPERCALL macro
  x86/tdx: Retry partially-completed page conversion hypercalls
 2023-11-01 10:28:32 -10:00
Linus Torvalds
7d461b291e drm for 6.7-rc1 
kernel:
 - add initial vmemdup-user-array
 
 core:
 - fix platform remove() to return void
 - drm_file owner updated to reflect owner
 - move size calcs to drm buddy allocator
 - let GPUVM build as a module
 - allow variable number of run-queues in scheduler
 
 edid:
 - handle bad h/v sync_end in EDIDs
 
 panfrost:
 - add Boris as maintainer
 
 fbdev:
 - use fb_ops helpers more
 - only allow logo use from fbcon
 - rename fb_pgproto to pgprot_framebuffer
 - add HPD state to drm_connector_oob_hotplug_event
 - convert to fbdev i/o mem helpers
 
 i915:
 - Enable meteorlake by default
 - Early Xe2 LPD/Lunarlake display enablement
 - Rework subplatforms into IP version checks
 - GuC based TLB invalidation for Meteorlake
 - Display rework for future Xe driver integration
 - LNL FBC features
 - LNL display feature capability reads
 - update recommended fw versions for DG2+
 - drop fastboot module parameter
 - added deviceid for Arrowlake-S
 - drop preproduction workarounds
 - don't disable preemption for resets
 - cleanup inlines in headers
 - PXP firmware loading fix
 - Fix sg list lengths
 - DSC PPS state readout/verification
 - Add more RPL P/U PCI IDs
 - Add new DG2-G12 stepping
 - DP enhanced framing support to state checker
 - Improve shared link bandwidth management
 - stop using GEM macros in display code
 - refactor related code into display code
 - locally enable W=1 warnings
 - remove PSR watchdog timers on LNL
 
 amdgpu:
 - RAS/FRU EEPROM updatse
 - IP discovery updatses
 - GC 11.5 support
 - DCN 3.5 support
 - VPE 6.1 support
 - NBIO 7.11 support
 - DML2 support
 - lots of IP updates
 - use flexible arrays for bo list handling
 - W=1 fixes
 - Enable seamless boot in more cases
 - Enable context type property for HDMI
 - Rework GPUVM TLB flushing
 - VCN IB start/size alignment fixes
 
 amdkfd:
 - GC 10/11 fixes
 - GC 11.5 support
 - use partial migration in GPU faults
 
 radeon:
 - W=1 Fixes
 - fix some possible buffer overflow/NULL derefs
 nouveau:
 - update uapi for NO_PREFETCH
 - scheduler/fence fixes
 - rework suspend/resume for GSP-RM
 - rework display in preparation for GSP-RM
 
 habanalabs:
 - uapi: expose tsc clock
 - uapi: block access to eventfd through control device
 - uapi: force dma-buf export to PAGE_SIZE alignments
 - complete move to accel subsystem
 - move firmware interface include files
 - perform hard reset on PCIe AXI drain event
 - optimise user interrupt handling
 
 msm:
 - DP: use existing helpers for DPCD
 - DPU: interrupts reworked
 - gpu: a7xx (a730/a740) support
 - decouple msm_drv from kms for headless devices
 
 mediatek:
 - MT8188 dsi/dp/edp support
 - DDP GAMMA - 12 bit LUT support
 - connector dynamic selection capability
 
 rockchip:
 - rv1126 mipi-dsi/vop support
 - add planar formats
 
 ast:
 - rename constants
 
 panels:
 - Mitsubishi AA084XE01
 - JDI LPM102A188A
 - LTK050H3148W-CTA6
 
 ivpu:
 - power management fixes
 
 qaic:
 - add detach slice bo api
 
 komeda:
 - add NV12 writeback
 
 tegra:
 - support NVSYNC/NHSYNC
 - host1x suspend fixes
 
 ili9882t:
 - separate into own driver
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Merge tag 'drm-next-2023-10-31-1' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights:
   - AMD adds some more upcoming HW platforms
   - Intel made Meteorlake stable and started adding Lunarlake
   - nouveau has a bunch of display rework in prepartion for the NVIDIA
     GSP firmware support
   - msm adds a7xx support
   - habanalabs has finished migration to accel subsystem

  Detail summary:

  kernel:
   - add initial vmemdup-user-array

  core:
   - fix platform remove() to return void
   - drm_file owner updated to reflect owner
   - move size calcs to drm buddy allocator
   - let GPUVM build as a module
   - allow variable number of run-queues in scheduler

  edid:
   - handle bad h/v sync_end in EDIDs

  panfrost:
   - add Boris as maintainer

  fbdev:
   - use fb_ops helpers more
   - only allow logo use from fbcon
   - rename fb_pgproto to pgprot_framebuffer
   - add HPD state to drm_connector_oob_hotplug_event
   - convert to fbdev i/o mem helpers

  i915:
   - Enable meteorlake by default
   - Early Xe2 LPD/Lunarlake display enablement
   - Rework subplatforms into IP version checks
   - GuC based TLB invalidation for Meteorlake
   - Display rework for future Xe driver integration
   - LNL FBC features
   - LNL display feature capability reads
   - update recommended fw versions for DG2+
   - drop fastboot module parameter
   - added deviceid for Arrowlake-S
   - drop preproduction workarounds
   - don't disable preemption for resets
   - cleanup inlines in headers
   - PXP firmware loading fix
   - Fix sg list lengths
   - DSC PPS state readout/verification
   - Add more RPL P/U PCI IDs
   - Add new DG2-G12 stepping
   - DP enhanced framing support to state checker
   - Improve shared link bandwidth management
   - stop using GEM macros in display code
   - refactor related code into display code
   - locally enable W=1 warnings
   - remove PSR watchdog timers on LNL

  amdgpu:
   - RAS/FRU EEPROM updatse
   - IP discovery updatses
   - GC 11.5 support
   - DCN 3.5 support
   - VPE 6.1 support
   - NBIO 7.11 support
   - DML2 support
   - lots of IP updates
   - use flexible arrays for bo list handling
   - W=1 fixes
   - Enable seamless boot in more cases
   - Enable context type property for HDMI
   - Rework GPUVM TLB flushing
   - VCN IB start/size alignment fixes

  amdkfd:
   - GC 10/11 fixes
   - GC 11.5 support
   - use partial migration in GPU faults

  radeon:
   - W=1 Fixes
   - fix some possible buffer overflow/NULL derefs

  nouveau:
   - update uapi for NO_PREFETCH
   - scheduler/fence fixes
   - rework suspend/resume for GSP-RM
   - rework display in preparation for GSP-RM

  habanalabs:
   - uapi: expose tsc clock
   - uapi: block access to eventfd through control device
   - uapi: force dma-buf export to PAGE_SIZE alignments
   - complete move to accel subsystem
   - move firmware interface include files
   - perform hard reset on PCIe AXI drain event
   - optimise user interrupt handling

  msm:
   - DP: use existing helpers for DPCD
   - DPU: interrupts reworked
   - gpu: a7xx (a730/a740) support
   - decouple msm_drv from kms for headless devices

  mediatek:
   - MT8188 dsi/dp/edp support
   - DDP GAMMA - 12 bit LUT support
   - connector dynamic selection capability

  rockchip:
   - rv1126 mipi-dsi/vop support
   - add planar formats

  ast:
   - rename constants

  panels:
   - Mitsubishi AA084XE01
   - JDI LPM102A188A
   - LTK050H3148W-CTA6

  ivpu:
   - power management fixes

  qaic:
   - add detach slice bo api

  komeda:
   - add NV12 writeback

  tegra:
   - support NVSYNC/NHSYNC
   - host1x suspend fixes

  ili9882t:
   - separate into own driver"

* tag 'drm-next-2023-10-31-1' of git://anongit.freedesktop.org/drm/drm: (1803 commits)
  drm/amdgpu: Remove unused variables from amdgpu_show_fdinfo
  drm/amdgpu: Remove duplicate fdinfo fields
  drm/amd/amdgpu: avoid to disable gfxhub interrupt when driver is unloaded
  drm/amdgpu: Add EXT_COHERENT support for APU and NUMA systems
  drm/amdgpu: Retrieve CE count from ce_count_lo_chip in EccInfo table
  drm/amdgpu: Identify data parity error corrected in replay mode
  drm/amdgpu: Fix typo in IP discovery parsing
  drm/amd/display: fix S/G display enablement
  drm/amdxcp: fix amdxcp unloads incompletely
  drm/amd/amdgpu: fix the GPU power print error in pm info
  drm/amdgpu: Use pcie domain of xcc acpi objects
  drm/amd: check num of link levels when update pcie param
  drm/amdgpu: Add a read to GFX v9.4.3 ring test
  drm/amd/pm: call smu_cmn_get_smc_version in is_mode1_reset_supported.
  drm/amdgpu: get RAS poison status from DF v4_6_2
  drm/amdgpu: Use discovery table's subrevision
  drm/amd/display: 3.2.256
  drm/amd/display: add interface to query SubVP status
  drm/amd/display: Read before writing Backlight Mode Set Register
  drm/amd/display: Disable SYMCLK32_SE RCO on DCN314
  ...
 2023-11-01 06:28:35 -10:00
Linus Torvalds
59fff63cc2 platform-drivers-x86 for v6.7-1 
Highlights:
  - asus-wmi:		Support for screenpad and solve brightness key
 			press duplication
  - int3472:		Eliminate the last use of deprecated GPIO functions
  - mlxbf-pmc:		New HW support
  - msi-ec:		Support new EC configurations
  - thinkpad_acpi:	Support reading aux MAC address during passthrough
  - wmi: 		Fixes & improvements
  - x86-android-tablets:	Detection fix and avoid use of GPIO private APIs
  - Debug & metrics interface improvements
  - Miscellaneous cleanups / fixes / improvements
 
 The following is an automated shortlog grouped by driver:
 
 acer-wmi:
  -  Remove void function return
 
 amd/hsmp:
  -  add support for metrics tbl
  -  create plat specific struct
  -  Fix iomem handling
  -  improve the error log
 
 amd/pmc:
  -  Add dump_custom_stb module parameter
  -  Add PMFW command id to support S2D force flush
  -  Handle overflow cases where the num_samples range is higher
  -  Use flex array when calling amd_pmc_stb_debugfs_open_v2()
 
 asus-wireless:
  -  Replace open coded acpi_match_acpi_device()
 
 asus-wmi:
  -  add support for ASUS screenpad
  -  Do not report brightness up/down keys when also reported by acpi_video
 
 gpiolib: acpi:
  -  Add a ignore interrupt quirk for Peaq C1010
  -  Check if a GPIO is listed in ignore_interrupt earlier
 
 hp-bioscfg:
  -  Annotate struct bios_args with __counted_by
 
 inspur-platform-profile:
  -  Add platform profile support
 
 int3472:
  -  Add new skl_int3472_fill_gpiod_lookup() helper
  -  Add new skl_int3472_gpiod_get_from_temp_lookup() helper
  -  Stop using gpiod_toggle_active_low()
  -  Switch to devm_get_gpiod()
 
 intel: bytcrc_pwrsrc:
  -  Convert to platform remove callback returning void
 
 intel/ifs:
  -  Add new CPU support
  -  Add new error code
  -  ARRAY BIST for Sierra Forest
  -  Gen2 scan image loading
  -  Gen2 Scan test support
  -  Metadata validation for start_chunk
  -  Refactor image loading code
  -  Store IFS generation number
  -  Validate image size
 
 intel_speed_select_if:
  -  Remove hardcoded map size
  -  Use devm_ioremap_resource
 
 intel/tpmi:
  -  Add debugfs support for read/write blocked
  -  Add defines to get version information
 
 intel-uncore-freq:
  -  Ignore minor version change
 
 ISST:
  -  Allow level 0 to be not present
  -  Ignore minor version change
  -  Use fuse enabled mask instead of allowed levels
 
 mellanox:
  -  Fix misspelling error in routine name
  -  Rename some init()/exit() functions for consistent naming
 
 mlxbf-bootctl:
  -  Convert to platform remove callback returning void
 
 mlxbf-pmc:
  -  Add support for BlueField-3
 
 mlxbf-tmfifo:
  -  Convert to platform remove callback returning void
 
 mlx-Convert to platform remove callback returning void:
  - mlx-Convert to platform remove callback returning void
 
 mlxreg-hotplug:
  -  Convert to platform remove callback returning void
 
 mlxreg-io:
  -  Convert to platform remove callback returning void
 
 mlxreg-lc:
  -  Convert to platform remove callback returning void
 
 msi-ec:
  -  Add more EC configs
  -  rename fn_super_swap
 
 nvsw-sn2201:
  -  Convert to platform remove callback returning void
 
 sel3350-Convert to platform remove callback returning void:
  - sel3350-Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-apollolake:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-elkhartlake:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-f7188x:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt:
  -  Simplify simatic_ipc_batt_remove()
 
 surface: acpi-notify:
  -  Convert to platform remove callback returning void
 
 surface: aggregator:
  -  Annotate struct ssam_event with __counted_by
 
 surface: aggregator-cdev:
  -  Convert to platform remove callback returning void
 
 surface: aggregator-registry:
  -  Convert to platform remove callback returning void
 
 surface: dtx:
  -  Convert to platform remove callback returning void
 
 surface: gpe:
  -  Convert to platform remove callback returning void
 
 surface: hotplug:
  -  Convert to platform remove callback returning void
 
 surface: surface3-wmi:
  -  Convert to platform remove callback returning void
 
 think-lmi:
  -  Add bulk save feature
  -  Replace kstrdup() + strreplace() with kstrdup_and_replace()
  -  Use strreplace() to replace a character by nul
 
 thinkpad_acpi:
  -  Add battery quirk for Thinkpad X120e
  -  replace deprecated strncpy with memcpy
  -  sysfs interface to auxmac
 
 tools/power/x86/intel-speed-select:
  -  Display error for core-power support
  -  Increase max CPUs in one request
  -  No TRL for non compute domains
  -  Sanitize integer arguments
  -  turbo-mode enable disable swapped
  -  Update help for TRL
  -  Use cgroup isolate for CPU 0
  -  v1.18 release
 
 wmi:
  -  Decouple probe deferring from wmi_block_list
  -  Decouple WMI device removal from wmi_block_list
  -  Fix opening of char device
  -  Fix probe failure when failing to register WMI devices
  -  Fix refcounting of WMI devices in legacy functions
 
 x86-android-tablets:
  -  Add a comment about x86_android_tablet_get_gpiod()
  -  Create a platform_device from module_init()
  -  Drop "linux,power-supply-name" from lenovo_yt3_bq25892_0_props[]
  -  Fix Lenovo Yoga Tablet 2 830F/L vs 1050F/L detection
  -  Remove invalid_aei_gpiochip from Peaq C1010
  -  Remove invalid_aei_gpiochip support
  -  Stop using gpiolib private APIs
  -  Use platform-device as gpio-keys parent
 
 xo15-ebook:
  -  Replace open coded acpi_match_acpi_device()
 
 Merges:
  -  Merge branch 'pdx86/platform-drivers-x86-int3472' into review-ilpo
  -  Merge branch 'pdx86/platform-drivers-x86-mellanox-init' into review-ilpo
  -  Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-ilpo
  -  Merge remote-tracking branch 'pdx86/platform-drivers-x86-android-tablets' into review-hans
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Merge tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Ilpo Järvinen:

 - asus-wmi: Support for screenpad and solve brightness key press
   duplication

 - int3472: Eliminate the last use of deprecated GPIO functions

 - mlxbf-pmc: New HW support

 - msi-ec: Support new EC configurations

 - thinkpad_acpi: Support reading aux MAC address during passthrough

 - wmi: Fixes & improvements

 - x86-android-tablets: Detection fix and avoid use of GPIO private APIs

 - Debug & metrics interface improvements

 - Miscellaneous cleanups / fixes / improvements

* tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits)
  platform/x86: inspur-platform-profile: Add platform profile support
  platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
  platform/x86: wmi: Decouple WMI device removal from wmi_block_list
  platform/x86: wmi: Fix opening of char device
  platform/x86: wmi: Fix probe failure when failing to register WMI devices
  platform/x86: wmi: Fix refcounting of WMI devices in legacy functions
  platform/x86: wmi: Decouple probe deferring from wmi_block_list
  platform/x86/amd/hsmp: Fix iomem handling
  platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video
  platform/x86: thinkpad_acpi: replace deprecated strncpy with memcpy
  tools/power/x86/intel-speed-select: v1.18 release
  tools/power/x86/intel-speed-select: Use cgroup isolate for CPU 0
  tools/power/x86/intel-speed-select: Increase max CPUs in one request
  tools/power/x86/intel-speed-select: Display error for core-power support
  tools/power/x86/intel-speed-select: No TRL for non compute domains
  tools/power/x86/intel-speed-select: turbo-mode enable disable swapped
  tools/power/x86/intel-speed-select: Update help for TRL
  tools/power/x86/intel-speed-select: Sanitize integer arguments
  platform/x86: acer-wmi: Remove void function return
  platform/x86/amd/pmc: Add dump_custom_stb module parameter
  ...
 2023-10-31 17:53:00 -10:00
Linus Torvalds
89ed67ef12 Networking changes for 6.7. 
Core & protocols
 ----------------
 
  - Support usec resolution of TCP timestamps, enabled selectively by
    a route attribute.
 
  - Defer regular TCP ACK while processing socket backlog, try to send
    a cumulative ACK at the end. Increase single TCP flow performance
    on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
 
  - The Fair Queuing (FQ) packet scheduler:
    - add built-in 3 band prio / WRR scheduling
    - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
    - improve inactive flow reporting
    - optimize the layout of structures for better cache locality
 
  - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
    replacement for the old MD5 option.
 
  - Add more retransmission timeout (RTO) related statistics to TCP_INFO.
 
  - Support sending fragmented skbs over vsock sockets.
 
  - Make sure we send SIGPIPE for vsock sockets if socket was shutdown().
 
  - Add sysctl for ignoring lower limit on lifetime in Router
    Advertisement PIO, based on an in-progress IETF draft.
 
  - Add sysctl to control activation of TCP ping-pong mode.
 
  - Add sysctl to make connection timeout in MPTCP configurable.
 
  - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
    limit the number of wakeups.
 
  - Support netlink GET for MDB (multicast forwarding), allowing user
    space to request a single MDB entry instead of dumping the entire
    table.
 
  - Support selective FDB flushing in the VXLAN tunnel driver.
 
  - Allow limiting learned FDB entries in bridges, prevent OOM attacks.
 
  - Allow controlling via configfs netconsole targets which were created
    via the kernel cmdline at boot, rather than via configfs at runtime.
 
  - Support multiple PTP timestamp event queue readers with different
    filters.
 
  - MCTP over I3C.
 
 BPF
 ---
 
  - Add new veth-like netdevice where BPF program defines the logic
    of the xmit routine. It can operate in L3 and L2 mode.
 
  - Support exceptions - allow asserting conditions which should
    never be true but are hard for the verifier to infer.
    With some extra flexibility around handling of the exit / failure.
    https://lwn.net/Articles/938435/
 
  - Add support for local per-cpu kptr, allow allocating and storing
    per-cpu objects in maps. Access to those objects operates on
    the value for the current CPU. This allows to deprecate local
    one-off implementations of per-CPU storage like
    BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
 
  - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
    for systemd to re-implement the LogNamespace feature which allows
    running multiple instances of systemd-journald to process the logs
    of different services.
 
  - Enable open-coded task_vma iteration, after maple tree conversion
    made it hard to directly walk VMAs in tracing programs.
 
  - Add open-coded task, css_task and css iterator support.
    One of the use cases is customizable OOM victim selection via BPF.
 
  - Allow source address selection with bpf_*_fib_lookup().
 
  - Add ability to pin BPF timer to the current CPU.
 
  - Prevent creation of infinite loops by combining tail calls and
    fentry/fexit programs.
 
  - Add missed stats for kprobes to retrieve the number of missed kprobe
    executions and subsequent executions of BPF programs.
 
  - Inherit system settings for CPU security mitigations.
 
  - Add BPF v4 CPU instruction support for arm32 and s390x.
 
 Changes to common code
 ----------------------
 
  - overflow: add DEFINE_FLEX() for on-stack definition of structs
    with flexible array members.
 
  - Process doc update with more guidance for reviewers.
 
 Driver API
 ----------
 
  - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
    mutex in most places and remove a lot of smaller locks.
 
  - Create a common DPLL configuration API. Allow configuring
    and querying state of PLL circuits used for clock syntonization,
    in network time distribution.
 
  - Unify fragmented and full page allocation APIs in page pool code.
    Let drivers be ignorant of PAGE_SIZE.
 
  - Rework PHY state machine to avoid races with calls to phy_stop().
 
  - Notify DSA drivers of MAC address changes on user ports, improve
    correctness of offloads which depend on matching port MAC addresses.
 
  - Allow antenna control on injected WiFi frames.
 
  - Reduce the number of variants of napi_schedule().
 
  - Simplify error handling when composing devlink health messages.
 
 Misc
 ----
 
  - A lot of KCSAN data race "fixes", from Eric.
 
  - A lot of __counted_by() annotations, from Kees.
 
  - A lot of strncpy -> strscpy and printf format fixes.
 
  - Replace master/slave terminology with conduit/user in DSA drivers.
 
  - Handful of KUnit tests for netdev and WiFi core.
 
 Removed
 -------
 
  - AppleTalk COPS.
 
  - AppleTalk ipddp.
 
  - TI AR7 CPMAC Ethernet driver.
 
 Drivers
 -------
 
  - Ethernet high-speed NICs:
    - Intel (100G, ice, idpf):
      - add a driver for the Intel E2000 IPUs
      - make CRC/FCS stripping configurable
      - cross-timestamping for E823 devices
      - basic support for E830 devices
      - use aux-bus for managing client drivers
      - i40e: report firmware versions via devlink
    - nVidia/Mellanox:
      - support 4-port NICs
      - increase max number of channels to 256
      - optimize / parallelize SF creation flow
    - Broadcom (bnxt):
      - enhance NIC temperature reporting
      - support PAM4 speeds and lane configuration
    - Marvell OcteonTX2:
      - PTP pulse-per-second output support
      - enable hardware timestamping for VFs
    - Solarflare/AMD:
      - conntrack NAT offload and offload for tunnels
    - Wangxun (ngbe/txgbe):
      - expose HW statistics
    - Pensando/AMD:
      - support PCI level reset
      - narrow down the condition under which skbs are linearized
    - Netronome/Corigine (nfp):
      - support CHACHA20-POLY1305 crypto in IPsec offload
 
  - Ethernet NICs embedded, slower, virtual:
    - Synopsys (stmmac):
      - add Loongson-1 SoC support
      - enable use of HW queues with no offload capabilities
      - enable PPS input support on all 5 channels
      - increase TX coalesce timer to 5ms
    - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
    - xen: support SW packet timestamping
    - add drivers for implementations based on TI's PRUSS (AM64x EVM)
 
  - nVidia/Mellanox Ethernet datacenter switches:
    - avoid poor HW resource use on Spectrum-4 by better block selection
      for IPv6 multicast forwarding and ordering of blocks in ACL region
 
  - Ethernet embedded switches:
    - Microchip:
      - support configuring the drive strength for EMI compliance
      - ksz9477: partial ACL support
      - ksz9477: HSR offload
      - ksz9477: Wake on LAN
    - Realtek:
      - rtl8366rb: respect device tree config of the CPU port
 
  - Ethernet PHYs:
    - support Broadcom BCM5221 PHYs
    - TI dp83867: support hardware LED blinking
 
  - CAN:
    - add support for Linux-PHY based CAN transceivers
    - at91_can: clean up and use rx-offload helpers
 
  - WiFi:
    - MediaTek (mt76):
      - new sub-driver for mt7925 USB/PCIe devices
      - HW wireless <> Ethernet bridging in MT7988 chips
      - mt7603/mt7628 stability improvements
    - Qualcomm (ath12k):
      - WCN7850:
        - enable 320 MHz channels in 6 GHz band
        - hardware rfkill support
        - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS
          to make scan faster
        - read board data variant name from SMBIOS
      - QCN9274: mesh support
    - RealTek (rtw89):
      - TDMA-based multi-channel concurrency (MCC)
    - Silicon Labs (wfx):
      - Remain-On-Channel (ROC) support
 
  - Bluetooth:
    - ISO: many improvements for broadcast support
    - mark BCM4378/BCM4387 as BROKEN_LE_CODED
    - add support for QCA2066
    - btmtksdio: enable Bluetooth wakeup from suspend
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support usec resolution of TCP timestamps, enabled selectively by a
     route attribute.

   - Defer regular TCP ACK while processing socket backlog, try to send
     a cumulative ACK at the end. Increase single TCP flow performance
     on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).

   - The Fair Queuing (FQ) packet scheduler:
       - add built-in 3 band prio / WRR scheduling
       - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
       - improve inactive flow reporting
       - optimize the layout of structures for better cache locality

   - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
     replacement for the old MD5 option.

   - Add more retransmission timeout (RTO) related statistics to
     TCP_INFO.

   - Support sending fragmented skbs over vsock sockets.

   - Make sure we send SIGPIPE for vsock sockets if socket was
     shutdown().

   - Add sysctl for ignoring lower limit on lifetime in Router
     Advertisement PIO, based on an in-progress IETF draft.

   - Add sysctl to control activation of TCP ping-pong mode.

   - Add sysctl to make connection timeout in MPTCP configurable.

   - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
     limit the number of wakeups.

   - Support netlink GET for MDB (multicast forwarding), allowing user
     space to request a single MDB entry instead of dumping the entire
     table.

   - Support selective FDB flushing in the VXLAN tunnel driver.

   - Allow limiting learned FDB entries in bridges, prevent OOM attacks.

   - Allow controlling via configfs netconsole targets which were
     created via the kernel cmdline at boot, rather than via configfs at
     runtime.

   - Support multiple PTP timestamp event queue readers with different
     filters.

   - MCTP over I3C.

  BPF:

   - Add new veth-like netdevice where BPF program defines the logic of
     the xmit routine. It can operate in L3 and L2 mode.

   - Support exceptions - allow asserting conditions which should never
     be true but are hard for the verifier to infer. With some extra
     flexibility around handling of the exit / failure:

          https://lwn.net/Articles/938435/

   - Add support for local per-cpu kptr, allow allocating and storing
     per-cpu objects in maps. Access to those objects operates on the
     value for the current CPU.

     This allows to deprecate local one-off implementations of per-CPU
     storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.

   - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
     for systemd to re-implement the LogNamespace feature which allows
     running multiple instances of systemd-journald to process the logs
     of different services.

   - Enable open-coded task_vma iteration, after maple tree conversion
     made it hard to directly walk VMAs in tracing programs.

   - Add open-coded task, css_task and css iterator support. One of the
     use cases is customizable OOM victim selection via BPF.

   - Allow source address selection with bpf_*_fib_lookup().

   - Add ability to pin BPF timer to the current CPU.

   - Prevent creation of infinite loops by combining tail calls and
     fentry/fexit programs.

   - Add missed stats for kprobes to retrieve the number of missed
     kprobe executions and subsequent executions of BPF programs.

   - Inherit system settings for CPU security mitigations.

   - Add BPF v4 CPU instruction support for arm32 and s390x.

  Changes to common code:

   - overflow: add DEFINE_FLEX() for on-stack definition of structs with
     flexible array members.

   - Process doc update with more guidance for reviewers.

  Driver API:

   - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
     mutex in most places and remove a lot of smaller locks.

   - Create a common DPLL configuration API. Allow configuring and
     querying state of PLL circuits used for clock syntonization, in
     network time distribution.

   - Unify fragmented and full page allocation APIs in page pool code.
     Let drivers be ignorant of PAGE_SIZE.

   - Rework PHY state machine to avoid races with calls to phy_stop().

   - Notify DSA drivers of MAC address changes on user ports, improve
     correctness of offloads which depend on matching port MAC
     addresses.

   - Allow antenna control on injected WiFi frames.

   - Reduce the number of variants of napi_schedule().

   - Simplify error handling when composing devlink health messages.

  Misc:

   - A lot of KCSAN data race "fixes", from Eric.

   - A lot of __counted_by() annotations, from Kees.

   - A lot of strncpy -> strscpy and printf format fixes.

   - Replace master/slave terminology with conduit/user in DSA drivers.

   - Handful of KUnit tests for netdev and WiFi core.

  Removed:

   - AppleTalk COPS.

   - AppleTalk ipddp.

   - TI AR7 CPMAC Ethernet driver.

  Drivers:

   - Ethernet high-speed NICs:
      - Intel (100G, ice, idpf):
         - add a driver for the Intel E2000 IPUs
         - make CRC/FCS stripping configurable
         - cross-timestamping for E823 devices
         - basic support for E830 devices
         - use aux-bus for managing client drivers
         - i40e: report firmware versions via devlink
      - nVidia/Mellanox:
         - support 4-port NICs
         - increase max number of channels to 256
         - optimize / parallelize SF creation flow
      - Broadcom (bnxt):
         - enhance NIC temperature reporting
         - support PAM4 speeds and lane configuration
      - Marvell OcteonTX2:
         - PTP pulse-per-second output support
         - enable hardware timestamping for VFs
      - Solarflare/AMD:
         - conntrack NAT offload and offload for tunnels
      - Wangxun (ngbe/txgbe):
         - expose HW statistics
      - Pensando/AMD:
         - support PCI level reset
         - narrow down the condition under which skbs are linearized
      - Netronome/Corigine (nfp):
         - support CHACHA20-POLY1305 crypto in IPsec offload

   - Ethernet NICs embedded, slower, virtual:
      - Synopsys (stmmac):
         - add Loongson-1 SoC support
         - enable use of HW queues with no offload capabilities
         - enable PPS input support on all 5 channels
         - increase TX coalesce timer to 5ms
      - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
      - xen: support SW packet timestamping
      - add drivers for implementations based on TI's PRUSS (AM64x EVM)

   - nVidia/Mellanox Ethernet datacenter switches:
      - avoid poor HW resource use on Spectrum-4 by better block
        selection for IPv6 multicast forwarding and ordering of blocks
        in ACL region

   - Ethernet embedded switches:
      - Microchip:
         - support configuring the drive strength for EMI compliance
         - ksz9477: partial ACL support
         - ksz9477: HSR offload
         - ksz9477: Wake on LAN
      - Realtek:
         - rtl8366rb: respect device tree config of the CPU port

   - Ethernet PHYs:
      - support Broadcom BCM5221 PHYs
      - TI dp83867: support hardware LED blinking

   - CAN:
      - add support for Linux-PHY based CAN transceivers
      - at91_can: clean up and use rx-offload helpers

   - WiFi:
      - MediaTek (mt76):
         - new sub-driver for mt7925 USB/PCIe devices
         - HW wireless <> Ethernet bridging in MT7988 chips
         - mt7603/mt7628 stability improvements
      - Qualcomm (ath12k):
         - WCN7850:
            - enable 320 MHz channels in 6 GHz band
            - hardware rfkill support
            - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
              make scan faster
            - read board data variant name from SMBIOS
        - QCN9274: mesh support
      - RealTek (rtw89):
         - TDMA-based multi-channel concurrency (MCC)
      - Silicon Labs (wfx):
         - Remain-On-Channel (ROC) support

   - Bluetooth:
      - ISO: many improvements for broadcast support
      - mark BCM4378/BCM4387 as BROKEN_LE_CODED
      - add support for QCA2066
      - btmtksdio: enable Bluetooth wakeup from suspend"

* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
  net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
  net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
  net: mana: Use xdp_set_features_flag instead of direct assignment
  vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
  iavf: delete the iavf client interface
  iavf: add a common function for undoing the interrupt scheme
  iavf: use unregister_netdev
  iavf: rely on netdev's own registered state
  iavf: fix the waiting time for initial reset
  iavf: in iavf_down, don't queue watchdog_task if comms failed
  iavf: simplify mutex_trylock+sleep loops
  iavf: fix comments about old bit locks
  doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
  tools: ynl: introduce option to process unknown attributes or types
  ipvlan: properly track tx_errors
  netdevsim: Block until all devices are released
  nfp: using napi_build_skb() to replace build_skb()
  net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
  net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
  net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
  ...
 2023-10-31 05:10:11 -10:00
Paolo Bonzini
be47941980 KVM SVM changes for 6.7: 
- Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while
    running an SEV-ES guest.
 
  - Clean up handling "failures" when KVM detects it can't emulate the "skip"
    action for an instruction that has already been partially emulated.  Drop a
    hack in the SVM code that was fudging around the emulator code not giving
    SVM enough information to do the right thing.
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Merge tag 'kvm-x86-svm-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM SVM changes for 6.7:

 - Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while
   running an SEV-ES guest.

 - Clean up handling "failures" when KVM detects it can't emulate the "skip"
   action for an instruction that has already been partially emulated.  Drop a
   hack in the SVM code that was fudging around the emulator code not giving
   SVM enough information to do the right thing.
 2023-10-31 10:22:43 -04:00
Paolo Bonzini
d5cde2e0b3 KVM PMU change for 6.7: 
- Handle NMI/SMI requests after PMU/PMI requests so that a PMI=>NMI doesn't
    require redoing the entire run loop due to the NMI not being detected until
    the final kvm_vcpu_exit_request() check before entering the guest.
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Merge tag 'kvm-x86-pmu-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM PMU change for 6.7:

 - Handle NMI/SMI requests after PMU/PMI requests so that a PMI=>NMI doesn't
   require redoing the entire run loop due to the NMI not being detected until
   the final kvm_vcpu_exit_request() check before entering the guest.
 2023-10-31 10:22:23 -04:00
Paolo Bonzini
e122d7a100 KVM x86 Xen changes for 6.7: 
- Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n.
 
  - Use the fast path directly from the timer callback when delivering Xen timer
    events.  Avoid the problematic races with using the fast path by ensuring
    the hrtimer isn't running when (re)starting the timer or saving the timer
    information (for userspace).
 
  - Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag.
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Merge tag 'kvm-x86-xen-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM x86 Xen changes for 6.7:

 - Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n.

 - Use the fast path directly from the timer callback when delivering Xen timer
   events.  Avoid the problematic races with using the fast path by ensuring
   the hrtimer isn't running when (re)starting the timer or saving the timer
   information (for userspace).

 - Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag.
 2023-10-31 10:21:42 -04:00
Paolo Bonzini
f0f59d069e KVM x86 MMU changes for 6.7: 
- Clean up code that deals with honoring guest MTRRs when the VM has
    non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.
 
  - Zap EPT entries when non-coherent DMA assignment stops/start to prevent
    using stale entries with the wrong memtype.
 
  - Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y, as
    there's zero reason to ignore guest PAT if the effective MTRR memtype is WB.
    This will also allow for future optimizations of handling guest MTRR updates
    for VMs with non-coherent DMA and the quirk enabled.
 
  - Harden the fast page fault path to guard against encountering an invalid
    root when walking SPTEs.
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Merge tag 'kvm-x86-mmu-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM x86 MMU changes for 6.7:

 - Clean up code that deals with honoring guest MTRRs when the VM has
   non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.

 - Zap EPT entries when non-coherent DMA assignment stops/start to prevent
   using stale entries with the wrong memtype.

 - Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y, as
   there's zero reason to ignore guest PAT if the effective MTRR memtype is WB.
   This will also allow for future optimizations of handling guest MTRR updates
   for VMs with non-coherent DMA and the quirk enabled.

 - Harden the fast page fault path to guard against encountering an invalid
   root when walking SPTEs.
 2023-10-31 10:17:43 -04:00
Paolo Bonzini
f292dc8aad KVM x86 misc changes for 6.7: 
- Add CONFIG_KVM_MAX_NR_VCPUS to allow supporting up to 4096 vCPUs without
    forcing more common use cases to eat the extra memory overhead.
 
  - Add IBPB and SBPB virtualization support.
 
  - Fix a bug where restoring a vCPU snapshot that was taken within 1 second of
    creating the original vCPU would cause KVM to try to synchronize the vCPU's
    TSC and thus clobber the correct TSC being set by userspace.
 
  - Compute guest wall clock using a single TSC read to avoid generating an
    inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads.
 
  - "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain
     about a "Firmware Bug" if the bit isn't set for select F/M/S combos.
 
  - Don't apply side effects to Hyper-V's synthetic timer on writes from
    userspace to fix an issue where the auto-enable behavior can trigger
    spurious interrupts, i.e. do auto-enabling only for guest writes.
 
  - Remove an unnecessary kick of all vCPUs when synchronizing the dirty log
    without PML enabled.
 
  - Advertise "support" for non-serializing FS/GS base MSR writes as appropriate.
 
  - Use octal notation for file permissions through KVM x86.
 
  - Fix a handful of typo fixes and warts.
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Merge tag 'kvm-x86-misc-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM x86 misc changes for 6.7:

 - Add CONFIG_KVM_MAX_NR_VCPUS to allow supporting up to 4096 vCPUs without
   forcing more common use cases to eat the extra memory overhead.

 - Add IBPB and SBPB virtualization support.

 - Fix a bug where restoring a vCPU snapshot that was taken within 1 second of
   creating the original vCPU would cause KVM to try to synchronize the vCPU's
   TSC and thus clobber the correct TSC being set by userspace.

 - Compute guest wall clock using a single TSC read to avoid generating an
   inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads.

 - "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain
    about a "Firmware Bug" if the bit isn't set for select F/M/S combos.

 - Don't apply side effects to Hyper-V's synthetic timer on writes from
   userspace to fix an issue where the auto-enable behavior can trigger
   spurious interrupts, i.e. do auto-enabling only for guest writes.

 - Remove an unnecessary kick of all vCPUs when synchronizing the dirty log
   without PML enabled.

 - Advertise "support" for non-serializing FS/GS base MSR writes as appropriate.

 - Use octal notation for file permissions through KVM x86.

 - Fix a handful of typo fixes and warts.
 2023-10-31 10:15:15 -04:00
Paolo Bonzini
f233646760 KVM x86 APIC changes for 6.7: 
- Purge VMX's posted interrupt descriptor *before* loading APIC state when
    handling KVM_SET_LAPIC.  Purging the PID after loading APIC state results in
    lost APIC timer IRQs as the APIC timer can be armed as part of loading APIC
    state, i.e. can immediately pend an IRQ if the expiry is in the past.
 
  - Clear the ICR.BUSY bit when handling trap-like x2APIC writes to suppress a
    WARN due to KVM expecting the BUSY bit to be cleared when sending IPIs.
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Merge tag 'kvm-x86-apic-6.7' of https://github.com/kvm-x86/linux into HEAD

KVM x86 APIC changes for 6.7:

 - Purge VMX's posted interrupt descriptor *before* loading APIC state when
   handling KVM_SET_LAPIC.  Purging the PID after loading APIC state results in
   lost APIC timer IRQs as the APIC timer can be armed as part of loading APIC
   state, i.e. can immediately pend an IRQ if the expiry is in the past.

 - Clear the ICR.BUSY bit when handling trap-like x2APIC writes.  This avoids a
   WARN, due to KVM expecting the BUSY bit to be cleared when sending IPIs.
 2023-10-31 10:11:19 -04:00
Linus Torvalds
455cdcb45f Rust changes for v6.7 
A small one compared to the previous one in terms of features. In terms
 of lines, as usual, the 'alloc' version upgrade accounts for most of them.
 
 Toolchain and infrastructure:
 
  - Upgrade to Rust 1.73.0.
 
    This time around, due to how the kernel and Rust schedules have
    aligned, there are two upgrades in fact. They contain the fixes for
    a few issues we reported to the Rust project.
 
    In addition, a few cleanups indicated by the upgraded compiler
    or possible thanks to it. For instance, the compiler now detects
    redundant explicit links.
 
  - A couple changes to the Rust 'Makefile' so that it can be used with
    toybox tools, allowing Rust to be used in the Android kernel build.
 
 x86:
 
  - Enable IBT if enabled in C.
 
 Documentation:
 
  - Add "The Rust experiment" section to the Rust index page.
 
 MAINTAINERS
 
  - Add Maintainer Entry Profile field ('P:').
 
  - Update our 'W:' field to point to the webpage we have been building
    this year.
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Merge tag 'rust-6.7' of https://github.com/Rust-for-Linux/linux

Pull rust updates from Miguel Ojeda:
 "A small one compared to the previous one in terms of features. In
  terms of lines, as usual, the 'alloc' version upgrade accounts for
  most of them.

  Toolchain and infrastructure:

   - Upgrade to Rust 1.73.0

     This time around, due to how the kernel and Rust schedules have
     aligned, there are two upgrades in fact. They contain the fixes for
     a few issues we reported to the Rust project.

     In addition, a few cleanups indicated by the upgraded compiler or
     possible thanks to it. For instance, the compiler now detects
     redundant explicit links.

   - A couple changes to the Rust 'Makefile' so that it can be used with
     toybox tools, allowing Rust to be used in the Android kernel build.

  x86:

   - Enable IBT if enabled in C

  Documentation:

   - Add "The Rust experiment" section to the Rust index page

  MAINTAINERS:

   - Add Maintainer Entry Profile field ('P:').

   - Update our 'W:' field to point to the webpage we have been building
     this year"

* tag 'rust-6.7' of https://github.com/Rust-for-Linux/linux:
  docs: rust: add "The Rust experiment" section
  x86: Enable IBT in Rust if enabled in C
  rust: Use grep -Ev rather than relying on GNU grep
  rust: Use awk instead of recent xargs
  rust: upgrade to Rust 1.73.0
  rust: print: use explicit link in documentation
  rust: task: remove redundant explicit link
  rust: kernel: remove `#[allow(clippy::new_ret_no_self)]`
  MAINTAINERS: add Maintainer Entry Profile field for Rust
  MAINTAINERS: update Rust webpage
  rust: upgrade to Rust 1.72.1
  rust: arc: add explicit `drop()` around `Box::from_raw()`
 2023-10-30 20:30:49 -10:00
Linus Torvalds
befaa609f4 hardening updates for v6.7-rc1 
- Add LKDTM test for stuck CPUs (Mark Rutland)
 
 - Improve LKDTM selftest behavior under UBSan (Ricardo Cañuelo)
 
 - Refactor more 1-element arrays into flexible arrays (Gustavo A. R. Silva)
 
 - Analyze and replace strlcpy and strncpy uses (Justin Stitt, Azeem Shaikh)
 
 - Convert group_info.usage to refcount_t (Elena Reshetova)
 
 - Add __counted_by annotations (Kees Cook, Gustavo A. R. Silva)
 
 - Add Kconfig fragment for basic hardening options (Kees Cook, Lukas Bulwahn)
 
 - Fix randstruct GCC plugin performance mode to stay in groups (Kees Cook)
 
 - Fix strtomem() compile-time check for small sources (Kees Cook)
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Merge tag 'hardening-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "One of the more voluminous set of changes is for adding the new
  __counted_by annotation[1] to gain run-time bounds checking of
  dynamically sized arrays with UBSan.

   - Add LKDTM test for stuck CPUs (Mark Rutland)

   - Improve LKDTM selftest behavior under UBSan (Ricardo Cañuelo)

   - Refactor more 1-element arrays into flexible arrays (Gustavo A. R.
     Silva)

   - Analyze and replace strlcpy and strncpy uses (Justin Stitt, Azeem
     Shaikh)

   - Convert group_info.usage to refcount_t (Elena Reshetova)

   - Add __counted_by annotations (Kees Cook, Gustavo A. R. Silva)

   - Add Kconfig fragment for basic hardening options (Kees Cook, Lukas
     Bulwahn)

   - Fix randstruct GCC plugin performance mode to stay in groups (Kees
     Cook)

   - Fix strtomem() compile-time check for small sources (Kees Cook)"

* tag 'hardening-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (56 commits)
  hwmon: (acpi_power_meter) replace open-coded kmemdup_nul
  reset: Annotate struct reset_control_array with __counted_by
  kexec: Annotate struct crash_mem with __counted_by
  virtio_console: Annotate struct port_buffer with __counted_by
  ima: Add __counted_by for struct modsig and use struct_size()
  MAINTAINERS: Include stackleak paths in hardening entry
  string: Adjust strtomem() logic to allow for smaller sources
  hardening: x86: drop reference to removed config AMD_IOMMU_V2
  randstruct: Fix gcc-plugin performance mode to stay in group
  mailbox: zynqmp: Annotate struct zynqmp_ipi_pdata with __counted_by
  drivers: thermal: tsens: Annotate struct tsens_priv with __counted_by
  irqchip/imx-intmux: Annotate struct intmux_data with __counted_by
  KVM: Annotate struct kvm_irq_routing_table with __counted_by
  virt: acrn: Annotate struct vm_memory_region_batch with __counted_by
  hwmon: Annotate struct gsc_hwmon_platform_data with __counted_by
  sparc: Annotate struct cpuinfo_tree with __counted_by
  isdn: kcapi: replace deprecated strncpy with strscpy_pad
  isdn: replace deprecated strncpy with strscpy
  NFS/flexfiles: Annotate struct nfs4_ff_layout_segment with __counted_by
  nfs41: Annotate struct nfs4_file_layout_dsaddr with __counted_by
  ...
 2023-10-30 19:09:55 -10:00
Linus Torvalds
2656821f1f RCU pull request for v6.7 
This pull request contains the following branches:
 
 rcu/torture: RCU torture, locktorture and generic torture infrastructure
 	updates that include various fixes, cleanups and consolidations.
 	Among the user visible things, ftrace dumps can now be found into
 	their own file, and module parameters get better documented and
 	reported on dumps.
 
 rcu/fixes: Generic and misc fixes all over the place. Some highlights:
 
 	* Hotplug handling has seen some light cleanups and comments.
 
 	* An RCU barrier can now be triggered through sysfs to serialize
 	memory stress testing and avoid OOM.
 
 	* Object information is now dumped in case of invalid callback
 	invocation.
 
 	* Also various SRCU issues, too hard to trigger to deserve urgent
 	pull requests, have been fixed.
 
 rcu/docs: RCU documentation updates
 
 rcu/refscale: RCU reference scalability test minor fixes and doc
 	improvements.
 
 rcu/tasks: RCU tasks minor fixes
 
 rcu/stall: Stall detection updates. Introduce RCU CPU Stall notifiers
 	that allows a subsystem to provide informations to help debugging.
 	Also cure some false positive stalls.
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Merge tag 'rcu-next-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks

Pull RCU updates from Frederic Weisbecker:

 - RCU torture, locktorture and generic torture infrastructure updates
   that include various fixes, cleanups and consolidations.

   Among the user visible things, ftrace dumps can now be found into
   their own file, and module parameters get better documented and
   reported on dumps.

 - Generic and misc fixes all over the place. Some highlights:

     * Hotplug handling has seen some light cleanups and comments

     * An RCU barrier can now be triggered through sysfs to serialize
       memory stress testing and avoid OOM

     * Object information is now dumped in case of invalid callback
       invocation

     * Also various SRCU issues, too hard to trigger to deserve urgent
       pull requests, have been fixed

 - RCU documentation updates

 - RCU reference scalability test minor fixes and doc improvements.

 - RCU tasks minor fixes

 - Stall detection updates. Introduce RCU CPU Stall notifiers that
   allows a subsystem to provide informations to help debugging. Also
   cure some false positive stalls.

* tag 'rcu-next-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks: (56 commits)
  srcu: Only accelerate on enqueue time
  locktorture: Check the correct variable for allocation failure
  srcu: Fix callbacks acceleration mishandling
  rcu: Comment why callbacks migration can't wait for CPUHP_RCUTREE_PREP
  rcu: Standardize explicit CPU-hotplug calls
  rcu: Conditionally build CPU-hotplug teardown callbacks
  rcu: Remove references to rcu_migrate_callbacks() from diagrams
  rcu: Assume rcu_report_dead() is always called locally
  rcu: Assume IRQS disabled from rcu_report_dead()
  rcu: Use rcu_segcblist_segempty() instead of open coding it
  rcu: kmemleak: Ignore kmemleak false positives when RCU-freeing objects
  srcu: Fix srcu_struct node grpmask overflow on 64-bit systems
  torture: Convert parse-console.sh to mktemp
  rcutorture: Traverse possible cpu to set maxcpu in rcu_nocb_toggle()
  rcutorture: Replace schedule_timeout*() 1-jiffy waits with HZ/20
  torture: Add kvm.sh --debug-info argument
  locktorture: Rename readers_bind/writers_bind to bind_readers/bind_writers
  doc: Catch-up update for locktorture module parameters
  locktorture: Add call_rcu_chains module parameter
  locktorture: Add new module parameters to lock_torture_print_module_parms()
  ...
 2023-10-30 18:01:41 -10:00
Linus Torvalds
eb55307e67 X86 core code updates: 
- Limit the hardcoded topology quirk for Hygon CPUs to those which have a
     model ID less than 4. The newer models have the topology CPUID leaf 0xB
     correctly implemented and are not affected.
 
   - Make SMT control more robust against enumeration failures
 
     SMT control was added to allow controlling SMT at boottime or
     runtime. The primary purpose was to provide a simple mechanism to
     disable SMT in the light of speculation attack vectors.
 
     It turned out that the code is sensible to enumeration failures and
     worked only by chance for XEN/PV. XEN/PV has no real APIC enumeration
     which means the primary thread mask is not set up correctly. By chance
     a XEN/PV boot ends up with smp_num_siblings == 2, which makes the
     hotplug control stay at its default value "enabled". So the mask is
     never evaluated.
 
     The ongoing rework of the topology evaluation caused XEN/PV to end up
     with smp_num_siblings == 1, which sets the SMT control to "not
     supported" and the empty primary thread mask causes the hotplug core to
     deny the bringup of the APS.
 
     Make the decision logic more robust and take 'not supported' and 'not
     implemented' into account for the decision whether a CPU should be
     booted or not.
 
   - Fake primary thread mask for XEN/PV
 
     Pretend that all XEN/PV vCPUs are primary threads, which makes the
     usage of the primary thread mask valid on XEN/PV. That is consistent
     with because all of the topology information on XEN/PV is fake or even
     non-existent.
 
   - Encapsulate topology information in cpuinfo_x86
 
     Move the randomly scattered topology data into a separate data
     structure for readability and as a preparatory step for the topology
     evaluation overhaul.
 
   - Consolidate APIC ID data type to u32
 
     It's fixed width hardware data and not randomly u16, int, unsigned long
     or whatever developers decided to use.
 
   - Cure the abuse of cpuinfo for persisting logical IDs.
 
     Per CPU cpuinfo is used to persist the logical package and die
     IDs. That's really not the right place simply because cpuinfo is
     subject to be reinitialized when a CPU goes through an offline/online
     cycle.
 
     Use separate per CPU data for the persisting to enable the further
     topology management rework. It will be removed once the new topology
     management is in place.
 
   - Provide a debug interface for inspecting topology information
 
     Useful in general and extremly helpful for validating the topology
     management rework in terms of correctness or "bug" compatibility.
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Merge tag 'x86-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 core updates from Thomas Gleixner:

 - Limit the hardcoded topology quirk for Hygon CPUs to those which have
   a model ID less than 4.

   The newer models have the topology CPUID leaf 0xB correctly
   implemented and are not affected.

 - Make SMT control more robust against enumeration failures

   SMT control was added to allow controlling SMT at boottime or
   runtime. The primary purpose was to provide a simple mechanism to
   disable SMT in the light of speculation attack vectors.

   It turned out that the code is sensible to enumeration failures and
   worked only by chance for XEN/PV. XEN/PV has no real APIC enumeration
   which means the primary thread mask is not set up correctly. By
   chance a XEN/PV boot ends up with smp_num_siblings == 2, which makes
   the hotplug control stay at its default value "enabled". So the mask
   is never evaluated.

   The ongoing rework of the topology evaluation caused XEN/PV to end up
   with smp_num_siblings == 1, which sets the SMT control to "not
   supported" and the empty primary thread mask causes the hotplug core
   to deny the bringup of the APS.

   Make the decision logic more robust and take 'not supported' and 'not
   implemented' into account for the decision whether a CPU should be
   booted or not.

 - Fake primary thread mask for XEN/PV

   Pretend that all XEN/PV vCPUs are primary threads, which makes the
   usage of the primary thread mask valid on XEN/PV. That is consistent
   with because all of the topology information on XEN/PV is fake or
   even non-existent.

 - Encapsulate topology information in cpuinfo_x86

   Move the randomly scattered topology data into a separate data
   structure for readability and as a preparatory step for the topology
   evaluation overhaul.

 - Consolidate APIC ID data type to u32

   It's fixed width hardware data and not randomly u16, int, unsigned
   long or whatever developers decided to use.

 - Cure the abuse of cpuinfo for persisting logical IDs.

   Per CPU cpuinfo is used to persist the logical package and die IDs.
   That's really not the right place simply because cpuinfo is subject
   to be reinitialized when a CPU goes through an offline/online cycle.

   Use separate per CPU data for the persisting to enable the further
   topology management rework. It will be removed once the new topology
   management is in place.

 - Provide a debug interface for inspecting topology information

   Useful in general and extremly helpful for validating the topology
   management rework in terms of correctness or "bug" compatibility.

* tag 'x86-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  x86/apic, x86/hyperv: Use u32 in hv_snp_boot_ap() too
  x86/cpu: Provide debug interface
  x86/cpu/topology: Cure the abuse of cpuinfo for persisting logical ids
  x86/apic: Use u32 for wakeup_secondary_cpu[_64]()
  x86/apic: Use u32 for [gs]et_apic_id()
  x86/apic: Use u32 for phys_pkg_id()
  x86/apic: Use u32 for cpu_present_to_apicid()
  x86/apic: Use u32 for check_apicid_used()
  x86/apic: Use u32 for APIC IDs in global data
  x86/apic: Use BAD_APICID consistently
  x86/cpu: Move cpu_l[l2]c_id into topology info
  x86/cpu: Move logical package and die IDs into topology info
  x86/cpu: Remove pointless evaluation of x86_coreid_bits
  x86/cpu: Move cu_id into topology info
  x86/cpu: Move cpu_core_id into topology info
  hwmon: (fam15h_power) Use topology_core_id()
  scsi: lpfc: Use topology_core_id()
  x86/cpu: Move cpu_die_id into topology info
  x86/cpu: Move phys_proc_id into topology info
  x86/cpu: Encapsulate topology information in cpuinfo_x86
  ...
 2023-10-30 17:37:47 -10:00
Linus Torvalds
943af0e73a Updates for the X86 APIC: 
- Make the quirk for non-maskable MSI interrupts in the affinity setter
     functional again.
 
     It was broken by a MSI core code update, which restructured the code in
     a way that the quirk flag was not longer set correctly.
 
     Trying to restore the core logic caused a deeper inspection and it
     turned out that the extra quirk flag is not required at all because
     it's the inverse of the reservation mode bit, which only can be set
     when the MSI interrupt is maskable.
 
     So the trivial fix is to use the reservation mode check in the affinity
     setter function and remove almost 40 lines of code related to the
     no-mask quirk flag.
 
   - Cure a Kconfig dependency issue which causes compile fails by correcting
     the conditionals in the affected heaer files.
 
   - Clean up coding style in the UV APIC driver.
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Merge tag 'x86-apic-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 APIC updates from Thomas Gleixner:

 - Make the quirk for non-maskable MSI interrupts in the affinity setter
   functional again.

   It was broken by a MSI core code update, which restructured the code
   in a way that the quirk flag was not longer set correctly.

   Trying to restore the core logic caused a deeper inspection and it
   turned out that the extra quirk flag is not required at all because
   it's the inverse of the reservation mode bit, which only can be set
   when the MSI interrupt is maskable.

   So the trivial fix is to use the reservation mode check in the
   affinity setter function and remove almost 40 lines of code related
   to the no-mask quirk flag.

 - Cure a Kconfig dependency issue which causes compile failures by
   correcting the conditionals in the affected header files.

 - Clean up coding style in the UV APIC driver.

* tag 'x86-apic-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic/msi: Fix misconfigured non-maskable MSI quirk
  x86/msi: Fix compile error caused by CONFIG_GENERIC_MSI_IRQ=y && !CONFIG_X86_LOCAL_APIC
  x86/platform/uv/apic: Clean up inconsistent indenting
 2023-10-30 17:27:56 -10:00
Linus Torvalds
ecb8cd2a9f Enable CONFIG_DEBUG_ENTRY=y in the x86 defconfigs. 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-build-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 build update from Ingo Molnar:
 "Enable CONFIG_DEBUG_ENTRY=y in the x86 defconfigs"

* tag 'x86-build-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/defconfig: Enable CONFIG_DEBUG_ENTRY=y
 2023-10-30 16:10:06 -10:00
Linus Torvalds
f0d25b5d0f x86 MM handling code changes for v6.7: 
- Add new NX-stack self-test
  - Improve NUMA partial-CFMWS handling
  - Fix #VC handler bugs resulting in SEV-SNP boot failures
  - Drop the 4MB memory size restriction on minimal NUMA nodes
  - Reorganize headers a bit, in preparation to header dependency reduction efforts
  - Misc cleanups & fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-mm-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm handling updates from Ingo Molnar:

 - Add new NX-stack self-test

 - Improve NUMA partial-CFMWS handling

 - Fix #VC handler bugs resulting in SEV-SNP boot failures

 - Drop the 4MB memory size restriction on minimal NUMA nodes

 - Reorganize headers a bit, in preparation to header dependency
   reduction efforts

 - Misc cleanups & fixes

* tag 'x86-mm-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Drop the 4 MB restriction on minimal NUMA node memory size
  selftests/x86/lam: Zero out buffer for readlink()
  x86/sev: Drop unneeded #include
  x86/sev: Move sev_setup_arch() to mem_encrypt.c
  x86/tdx: Replace deprecated strncpy() with strtomem_pad()
  selftests/x86/mm: Add new test that userspace stack is in fact NX
  x86/sev: Make boot_ghcb_page[] static
  x86/boot: Move x86_cache_alignment initialization to correct spot
  x86/sev-es: Set x86_virt_bits to the correct value straight away, instead of a two-phase approach
  x86/sev-es: Allow copy_from_kernel_nofault() in earlier boot
  x86_64: Show CR4.PSE on auxiliaries like on BSP
  x86/iommu/docs: Update AMD IOMMU specification document URL
  x86/sev/docs: Update document URL in amd-memory-encryption.rst
  x86/mm: Move arch_memory_failure() and arch_is_platform_page() definitions from <asm/processor.h> to <asm/pgtable.h>
  ACPI/NUMA: Apply SRAT proximity domain to entire CFMWS window
  x86/numa: Introduce numa_fill_memblks()
 2023-10-30 15:40:57 -10:00
Linus Torvalds
1641b9b040 Fix out-of-order NMI nesting checks resulting in false positive warnings. 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-irq-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 irq fix from Ingo Molnar:
 "Fix out-of-order NMI nesting checks resulting in false positive
  warnings"

* tag 'x86-irq-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/nmi: Fix out-of-order NMI nesting checks & false positive warning
 2023-10-30 15:39:38 -10:00
Linus Torvalds
ed766c2611 Changes to the x86 entry code in v6.7: 
- Make IA32_EMULATION boot time configurable with
    the new ia32_emulation=<bool> boot option.
 
  - Clean up fast syscall return validation code: convert
    it to C and refactor the code.
 
  - As part of this, optimize the canonical RIP test code.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 entry updates from Ingo Molnar:

 - Make IA32_EMULATION boot time configurable with
   the new ia32_emulation=<bool> boot option

 - Clean up fast syscall return validation code: convert
   it to C and refactor the code

 - As part of this, optimize the canonical RIP test code

* tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/32: Clean up syscall fast exit tests
  x86/entry/64: Use TASK_SIZE_MAX for canonical RIP test
  x86/entry/64: Convert SYSRET validation tests to C
  x86/entry/32: Remove SEP test for SYSEXIT
  x86/entry/32: Convert do_fast_syscall_32() to bool return type
  x86/entry/compat: Combine return value test from syscall handler
  x86/entry/64: Remove obsolete comment on tracing vs. SYSRET
  x86: Make IA32_EMULATION boot time configurable
  x86/entry: Make IA32 syscalls' availability depend on ia32_enabled()
  x86/elf: Make loading of 32bit processes depend on ia32_enabled()
  x86/entry: Compile entry_SYSCALL32_ignore() unconditionally
  x86/entry: Rename ignore_sysret()
  x86: Introduce ia32_enabled()
 2023-10-30 15:27:27 -10:00
Linus Torvalds
5780e39edb x86 assembly code improvements for v6.7 are: 
- Micro-optimize the x86 bitops code
 - Define target-specific {raw,this}_cpu_try_cmpxchg{64,128}() to improve code generation
 - Define and use raw_cpu_try_cmpxchg() preempt_count_set()
 - Do not clobber %rsi in percpu_{try_,}cmpxchg{64,128}_op
 - Remove the unused __sw_hweight64() implementation on x86-32
 - Misc fixes and cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-asm-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 assembly code updates from Ingo Molnar:

 - Micro-optimize the x86 bitops code

 - Define target-specific {raw,this}_cpu_try_cmpxchg{64,128}() to
   improve code generation

 - Define and use raw_cpu_try_cmpxchg() preempt_count_set()

 - Do not clobber %rsi in percpu_{try_,}cmpxchg{64,128}_op

 - Remove the unused __sw_hweight64() implementation on x86-32

 - Misc fixes and cleanups

* tag 'x86-asm-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/lib: Address kernel-doc warnings
  x86/entry: Fix typos in comments
  x86/entry: Remove unused argument %rsi passed to exc_nmi()
  x86/bitops: Remove unused __sw_hweight64() assembly implementation on x86-32
  x86/percpu: Do not clobber %rsi in percpu_{try_,}cmpxchg{64,128}_op
  x86/percpu: Use raw_cpu_try_cmpxchg() in preempt_count_set()
  x86/percpu: Define raw_cpu_try_cmpxchg and this_cpu_try_cmpxchg()
  x86/percpu: Define {raw,this}_cpu_try_cmpxchg{64,128}
  x86/asm/bitops: Use __builtin_clz{l|ll} to evaluate constant expressions
 2023-10-30 14:18:00 -10:00
Linus Torvalds
2b95bb0526 Changes to the x86 boot code in v6.7: 
- Rework PE header generation, primarily to generate a modern, 4k aligned
    kernel image view with narrower W^X permissions.
 
  - Further refine init-lifetime annotations
 
  - Misc cleanups & fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-boot-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 boot updates from Ingo Molnar:

 - Rework PE header generation, primarily to generate a modern, 4k
   aligned kernel image view with narrower W^X permissions.

 - Further refine init-lifetime annotations

 - Misc cleanups & fixes

* tag 'x86-boot-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  x86/boot: efistub: Assign global boot_params variable
  x86/boot: Rename conflicting 'boot_params' pointer to 'boot_params_ptr'
  x86/head/64: Move the __head definition to <asm/init.h>
  x86/head/64: Add missing __head annotation to startup_64_load_idt()
  x86/head/64: Mark 'startup_gdt[]' and 'startup_gdt_descr' as __initdata
  x86/boot: Harmonize the style of array-type parameter for fixup_pointer() calls
  x86/boot: Fix incorrect startup_gdt_descr.size
  x86/boot: Compile boot code with -std=gnu11 too
  x86/boot: Increase section and file alignment to 4k/512
  x86/boot: Split off PE/COFF .data section
  x86/boot: Drop PE/COFF .reloc section
  x86/boot: Construct PE/COFF .text section from assembler
  x86/boot: Derive file size from _edata symbol
  x86/boot: Define setup size in linker script
  x86/boot: Set EFI handover offset directly in header asm
  x86/boot: Grab kernel_info offset from zoffset header directly
  x86/boot: Drop references to startup_64
  x86/boot: Drop redundant code setting the root device
  x86/boot: Omit compression buffer from PE/COFF image memory footprint
  x86/boot: Remove the 'bugger off' message
  ...
 2023-10-30 14:11:57 -10:00
Linus Torvalds
3b8b4b4fc4 Replace <asm/export.h> uses with <linux/export.h> and then remove <asm/export.h>. 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-headers-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 header file cleanup from Ingo Molnar:
 "Replace <asm/export.h> uses with <linux/export.h> and then remove
  <asm/export.h>"

* tag 'x86-headers-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/headers: Remove <asm/export.h>
  x86/headers: Replace #include <asm/export.h> with #include <linux/export.h>
  x86/headers: Remove unnecessary #include <asm/export.h>
 2023-10-30 14:04:23 -10:00
Linus Torvalds
bceb7accb7 Performance events changes for v6.7 are: 
- Add AMD Unified Memory Controller (UMC) events introduced with Zen 4
  - Simplify & clean up the uncore management code
  - Fall back from RDPMC to RDMSR on certain uncore PMUs
  - Improve per-package and cstate event reading
  - Extend the Intel ref-cycles event to GP counters
  - Fix Intel MTL event constraints
  - Improve the Intel hybrid CPU handling code
  - Micro-optimize the RAPL code
  - Optimize perf_cgroup_switch()
  - Improve large AUX area error handling
 
  - Misc fixes and cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull performance event updates from Ingo Molnar:
 - Add AMD Unified Memory Controller (UMC) events introduced with Zen 4
 - Simplify & clean up the uncore management code
 - Fall back from RDPMC to RDMSR on certain uncore PMUs
 - Improve per-package and cstate event reading
 - Extend the Intel ref-cycles event to GP counters
 - Fix Intel MTL event constraints
 - Improve the Intel hybrid CPU handling code
 - Micro-optimize the RAPL code
 - Optimize perf_cgroup_switch()
 - Improve large AUX area error handling
 - Misc fixes and cleanups

* tag 'perf-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
  perf/x86/amd/uncore: Pass through error code for initialization failures, instead of -ENODEV
  perf/x86/amd/uncore: Fix uninitialized return value in amd_uncore_init()
  x86/cpu: Fix the AMD Fam 17h, Fam 19h, Zen2 and Zen4 MSR enumerations
  perf: Optimize perf_cgroup_switch()
  perf/x86/amd/uncore: Add memory controller support
  perf/x86/amd/uncore: Add group exclusivity
  perf/x86/amd/uncore: Use rdmsr if rdpmc is unavailable
  perf/x86/amd/uncore: Move discovery and registration
  perf/x86/amd/uncore: Refactor uncore management
  perf/core: Allow reading package events from perf_event_read_local
  perf/x86/cstate: Allow reading the package statistics from local CPU
  perf/x86/intel/pt: Fix kernel-doc comments
  perf/x86/rapl: Annotate 'struct rapl_pmus' with __counted_by
  perf/core: Rename perf_proc_update_handler() -> perf_event_max_sample_rate_handler(), for readability
  perf/x86/rapl: Fix "Using plain integer as NULL pointer" Sparse warning
  perf/x86/rapl: Use local64_try_cmpxchg in rapl_event_update()
  perf/x86/rapl: Stop doing cpu_relax() in the local64_cmpxchg() loop in rapl_event_update()
  perf/core: Bail out early if the request AUX area is out of bound
  perf/x86/intel: Extend the ref-cycles event to GP counters
  perf/x86/intel: Fix broken fixed event constraints extension
  ...
 2023-10-30 13:44:35 -10:00
Linus Torvalds
cd063c8b9e Misc fixes and cleanups: 
- Fix potential MAX_NAME_LEN limit related build failures
  - Fix scripts/faddr2line symbol filtering bug
  - Fix scripts/faddr2line on LLVM=1
  - Fix scripts/faddr2line to accept readelf output with mapping symbols
  - Minor cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:
 "Misc fixes and cleanups:

   - Fix potential MAX_NAME_LEN limit related build failures

   - Fix scripts/faddr2line symbol filtering bug

   - Fix scripts/faddr2line on LLVM=1

   - Fix scripts/faddr2line to accept readelf output with mapping
     symbols

   - Minor cleanups"

* tag 'objtool-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  scripts/faddr2line: Skip over mapping symbols in output from readelf
  scripts/faddr2line: Use LLVM addr2line and readelf if LLVM=1
  scripts/faddr2line: Don't filter out non-function symbols from readelf
  objtool: Remove max symbol name length limitation
  objtool: Propagate early errors
  objtool: Use 'the fallthrough' pseudo-keyword
  x86/speculation, objtool: Use absolute relocations for annotations
  x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc_find()
 2023-10-30 13:20:02 -10:00