Kim Phillips e6cfcdda8c x86/bugs: Enable STIBP for IBPB mitigated RETBleed ... AMD's "Technical Guidance for Mitigating Branch Type Confusion, Rev. 1.0 2022-07-12" whitepaper, under section 6.1.2 "IBPB On Privileged Mode Entry / SMT Safety" says: Similar to the Jmp2Ret mitigation, if the code on the sibling thread cannot be trusted, software should set STIBP to 1 or disable SMT to ensure SMT safety when using this mitigation. So, like already being done for retbleed=unret, and now also for retbleed=ibpb, force STIBP on machines that have it, and report its SMT vulnerability status accordingly. [ bp: Remove the "we" and remove "[AMD]" applicability parameter which doesn't work here. ] Fixes: 3ebc170068 ("x86/bugs: Add retbleed=ibpb") Signed-off-by: Kim Phillips <kim.phillips@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: stable@vger.kernel.org # 5.10, 5.15, 5.19 Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 Link: https://lore.kernel.org/r/20220804192201.439596-1-kim.phillips@amd.com		2022-08-08 19:12:17 +02:00
..
ABI	arm64 updates for 5.20	2022-08-01 10:37:00 -07:00
accounting	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
admin-guide	x86/bugs: Enable STIBP for IBPB mitigated RETBleed	2022-08-08 19:12:17 +02:00
arc
arm	docs: arm: tcm: Fix typo in description of TCM and MMU usage	2022-06-09 12:56:33 -06:00
arm64	Merge branch 'for-next/cpufeature' into for-next/core	2022-07-25 10:58:10 +01:00
block
bpf	bpf, docs: Fix typo "respetively" to "respectively"	2022-04-28 17:20:48 +02:00
cdrom	It was a moderately busy cycle for documentation; highlights include:	2022-05-25 11:17:41 -07:00
core-api	- Rename a PKRU macro to make more sense when reading the code	2022-08-01 09:34:39 -07:00
cpu-freq
crypto
dev-tools	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
devicetree	Updates for interrupt core and drivers:	2022-08-01 12:48:15 -07:00
doc-guide	Documentation/process: use scripts/get_maintainer.pl on patches	2022-05-09 16:12:16 -06:00
driver-api	A NULL pointer dereference fix for vc4, and 3 patches to improve the	2022-07-01 09:27:55 +10:00
fault-injection	docs: fault-injection: fix defaults	2022-04-16 02:46:44 -06:00
fb
features	arm64: Add HAVE_IOREMAP_PROT support	2022-06-27 12:22:31 +01:00
filesystems	fs.idmapped.overlay.acl.v5.20	2022-08-01 09:10:07 -07:00
firmware_class
firmware-guide	TTY / Serial driver changes for 5.19-rc1	2022-06-03 11:08:40 -07:00
fpga	Documentation: fpga: dfl: add link address of feature id table	2022-05-10 16:05:27 +08:00
gpu	drm/todo: Add entry for using kunit in the subsystem	2022-05-05 10:09:06 +02:00
hid
hwmon	hwmon: Make chip parameter for with_info API mandatory	2022-05-22 11:32:31 -07:00
i2c	docs: i2c: reference simple probes	2022-05-04 22:35:19 +02:00
ia64
iio
images	docs: add SVG version of the Linux logo	2022-06-01 09:32:45 -06:00
infiniband
input	documentation: Format button_dev as a pointer.	2022-06-01 09:34:28 -06:00
isdn
kbuild	Documentation/llvm: Update Supported Arch table	2022-06-20 08:21:29 +09:00
kernel-hacking	Documentation: kernel-hacking: minor edits for style	2022-04-05 09:53:24 -06:00
leds	leds: qcom-lpg: Require pattern to follow documentation	2022-05-24 22:08:10 +02:00
litmus-tests
livepatch	doc: module: update file references	2022-07-01 14:50:01 -07:00
locking
loongarch	docs/LoongArch: Fix notes rendering by using reST directives	2022-06-17 22:09:05 +08:00
m68k
maintainer
mhi
mips
misc-devices	Documentation: Wire Oxford Semiconductor PCIe (Tornado) 950	2022-05-19 18:24:22 +02:00
netlabel
networking	Documentation: fix sctp_wmem in ip-sysctl.rst	2022-07-24 21:41:58 +01:00
nios2
nvdimm
openrisc
parisc
PCI	PCI/doc: Update obsolete pci_set_dma_mask() references	2022-04-21 12:10:44 -05:00
pcmcia
peci
power	Documentation: EM: Add artificial EM registration description	2022-04-13 16:26:18 +02:00
powerpc	powerpc: Enable the DAWR on POWER9 DD2.3 and above	2022-05-22 15:59:53 +10:00
process	docs: netdev: add a cheat sheet for the rules	2022-07-04 10:06:50 +01:00
RCU	Merge branch 'exp.2022.05.11a' into HEAD	2022-05-11 11:49:35 -07:00
riscv	Documentation: riscv: Add sv48 description to VM layout	2022-06-01 20:38:34 -07:00
s390
scheduler	docs/scheduler: fix unit error	2022-04-16 02:54:32 -06:00
scsi
security	integrity-v5.19	2022-05-24 13:50:39 -07:00
sh
sound	ASoC: doc: Capitalize RESET line name	2022-07-07 17:16:30 +01:00
sparc
sphinx	docs: pdfdocs: Add space for chapter counts >= 100 in TOC	2022-05-17 13:41:26 -06:00
sphinx-static
spi
staging	jump_label: make initial NOP patching the special case	2022-06-24 09:48:55 +02:00
target
timers
tools	Updates to Real Time Linux Analysis tool for 5.19:	2022-05-29 10:48:58 -07:00
trace	tracing/timerlat: Print stacktrace in the IRQ handler if needed	2022-05-26 21:13:00 -04:00
translations	doc: module: update file references	2022-07-01 14:50:01 -07:00
usb	docs: usb: fix literal block marker in usbmon verification example	2022-06-09 09:50:03 -06:00
userspace-api	media: lirc: add missing exceptions for lirc uapi header file	2022-05-26 14:30:17 -07:00
virt	arm64 updates for 5.20	2022-08-01 10:37:00 -07:00
vm	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
w1	w1: w1_therm: Document Maxim MAX31850 thermoelement IF.	2022-04-05 10:19:42 -06:00
watchdog
x86	It was a moderately busy cycle for documentation; highlights include:	2022-05-25 11:17:41 -07:00
xtensa
.gitignore
arch.rst	Documentation: LoongArch: Add basic documentations	2022-06-03 20:09:27 +08:00
asm-annotations.rst
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py	docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0	2022-06-01 09:26:05 -06:00
docutils.conf
dontdiff	randstruct: Move seed generation into scripts/basic/	2022-05-08 01:33:07 -07:00
index.rst	docs: Move the HTE documentation to driver-api/	2022-06-09 10:02:47 -06:00
Kconfig
Makefile
memory-barriers.txt	asm-generic: Add memory barrier dma_mb()	2022-06-23 18:34:58 +01:00
SubmittingPatches