Commit Graph

1293594 Commits

Author SHA1 Message Date
Jens Axboe
4ba032bc71 nvme fixes for Linux 6.11
- Sparse fix on static symbol (Jinjie)
  - Misleading warning message fix (Keith)
  - TCP command allocation handling fix (Maurizio)
  - PCI tagset allocation handling fix (Keith)
  - Low-power quirk for Samsung (Georg)
  - Queue limits fix for zone devices (Christoph)
  - Target protocol behavior fix (Maurizio)
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Merge tag 'nvme-6.11-2024-09-05' of git://git.infradead.org/nvme into block-6.11

Pull NVMe fixes from Keith:

"nvme fixes for Linux 6.11

 - Sparse fix on static symbol (Jinjie)
 - Misleading warning message fix (Keith)
 - TCP command allocation handling fix (Maurizio)
 - PCI tagset allocation handling fix (Keith)
 - Low-power quirk for Samsung (Georg)
 - Queue limits fix for zone devices (Christoph)
 - Target protocol behavior fix (Maurizio)"

* tag 'nvme-6.11-2024-09-05' of git://git.infradead.org/nvme:
  nvmet: Identify-Active Namespace ID List command should reject invalid nsid
  nvme: set BLK_FEAT_ZONED for ZNS multipath disks
  nvme-pci: Add sleep quirk for Samsung 990 Evo
  nvme-pci: allocate tagset on reset if necessary
  nvmet-tcp: fix kernel crash if commands allocation fails
  nvme: use better description for async reset reason
  nvmet: Make nvmet_debugfs static
2024-09-05 08:45:54 -06:00
Mikulas Patocka
b858a36fe9 bio-integrity: don't restrict the size of integrity metadata
bio_integrity_add_page restricts the size of the integrity metadata to
queue_max_hw_sectors(q). This restriction is not needed because oversized
bios are split automatically. This restriction causes problems with
dm-integrity 'inline' mode - if we send a large bio to dm-integrity and
the bio's metadata are larger than queue_max_hw_sectors(q),
bio_integrity_add_page fails and the bio is ended with BLK_STS_RESOURCE
error.

An example that triggers it:

dd: error writing '/dev/mapper/in2': Cannot allocate memory
1+0 records in
0+0 records out
0 bytes copied, 0.00169291 s, 0.0 kB/s

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: fb0987682c ("dm-integrity: introduce the Inline mode")
Fixes: 0ece1d649b ("bio-integrity: create multi-page bvecs in bio_integrity_add_page()")
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://lore.kernel.org/r/e41b3b8e-16c2-70cb-97cb-881234bb200d@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-09-04 07:17:00 -06:00
Li Nan
e58f5142f8 ublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()
When two UBLK_CMD_START_USER_RECOVERY commands are submitted, the
first one sets 'ubq->ubq_daemon' to NULL, and the second one triggers
WARN in ublk_queue_reinit() and subsequently a NULL pointer dereference
issue.

Fix it by adding the check in ublk_ctrl_start_recovery() and return
immediately in case of zero 'ub->nr_queues_ready'.

  BUG: kernel NULL pointer dereference, address: 0000000000000028
  RIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180
  Call Trace:
   <TASK>
   ? __die+0x20/0x70
   ? page_fault_oops+0x75/0x170
   ? exc_page_fault+0x64/0x140
   ? asm_exc_page_fault+0x22/0x30
   ? ublk_ctrl_start_recovery.constprop.0+0x82/0x180
   ublk_ctrl_uring_cmd+0x4f7/0x6c0
   ? pick_next_task_idle+0x26/0x40
   io_uring_cmd+0x9a/0x1b0
   io_issue_sqe+0x193/0x3f0
   io_wq_submit_work+0x9b/0x390
   io_worker_handle_work+0x165/0x360
   io_wq_worker+0xcb/0x2f0
   ? finish_task_switch.isra.0+0x203/0x290
   ? finish_task_switch.isra.0+0x203/0x290
   ? __pfx_io_wq_worker+0x10/0x10
   ret_from_fork+0x2d/0x50
   ? __pfx_io_wq_worker+0x10/0x10
   ret_from_fork_asm+0x1a/0x30
   </TASK>

Fixes: c732a852b4 ("ublk_drv: add START_USER_RECOVERY and END_USER_RECOVERY support")
Reported-and-tested-by: Changhui Zhong <czhong@redhat.com>
Closes: https://lore.kernel.org/all/CAGVVp+UvLiS+bhNXV-h2icwX1dyybbYHeQUuH7RYqUvMQf6N3w@mail.gmail.com
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Li Nan <linan122@huawei.com>
Link: https://lore.kernel.org/r/20240904031348.4139545-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-09-04 07:15:38 -06:00
Maurizio Lombardi
899d2e5a4e nvmet: Identify-Active Namespace ID List command should reject invalid nsid
nsid values of 0xFFFFFFFE and 0XFFFFFFFF should be rejected with
a status code of "Invalid Namespace or Format".
See NVMe Base Specification, Active Namespace ID list (CNS 02h).

Fixes: a07b4970f4 ("nvmet: add a generic NVMe target")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-09-03 10:05:40 -07:00
Christoph Hellwig
28982ad73d nvme: set BLK_FEAT_ZONED for ZNS multipath disks
The new stricter limits validation doesn't like a max_append_sectors value
to be set without BLK_FEAT_ZONED.  Set it before allocation the disk to
fix this instead of just inheriting it later.

Fixes: d690cb8ae1 ("block: add an API to atomically update queue limits")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-09-03 10:00:10 -07:00
Darrick J. Wong
e33a97a830 block: fix detection of unsupported WRITE SAME in blkdev_issue_write_zeroes
On error, blkdev_issue_write_zeroes used to recheck the block device's
WRITE SAME queue limits after submitting WRITE SAME bios.  As stated in
the comment, the purpose of this was to collapse all IO errors to
EOPNOTSUPP if the effect of issuing bios was that WRITE SAME got turned
off in the queue limits.  Therefore, it does not make sense to reuse the
zeroes limit that was read earlier in the function because we only care
about the queue limit *now*, not what it was at the start of the
function.

Found by running generic/351 from fstests.

Fixes: 64b582ca88 ("block: Read max write zeroes once for __blkdev_issue_write_zeroes()")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240827175340.GB1977952@frogsfrogsfrogs
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-28 08:49:25 -06:00
Georg Gottleuber
61aa894e7a nvme-pci: Add sleep quirk for Samsung 990 Evo
On some TUXEDO platforms, a Samsung 990 Evo NVMe leads to a high
power consumption in s2idle sleep (2-3 watts).

This patch applies 'Force No Simple Suspend' quirk to achieve a
sleep with a lower power consumption, typically around 0.5 watts.

Signed-off-by: Georg Gottleuber <ggo@tuxedocomputers.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-27 12:06:43 -07:00
Keith Busch
6f01bdbfef nvme-pci: allocate tagset on reset if necessary
If a drive is unable to create IO queues on the initial probe, a
subsequent reset will need to allocate the tagset if IO queue creation
is successful. Without this, blk_mq_update_nr_hw_queues will crash on a
bad pointer due to the invalid tagset.

Fixes: eac3ef2629 ("nvme-pci: split the initial probe from the rest path")
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-27 07:55:40 -07:00
Maurizio Lombardi
5572a55a6f nvmet-tcp: fix kernel crash if commands allocation fails
If the commands allocation fails in nvmet_tcp_alloc_cmds()
the kernel crashes in nvmet_tcp_release_queue_work() because of
a NULL pointer dereference.

  nvmet: failed to install queue 0 cntlid 1 ret 6
  Unable to handle kernel NULL pointer dereference at
         virtual address 0000000000000008

Fix the bug by setting queue->nr_cmds to zero in case
nvmet_tcp_alloc_cmd() fails.

Fixes: 872d26a391 ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-26 16:00:52 -07:00
Keith Busch
5a6d3a638c nvme: use better description for async reset reason
The NVMe AER notification of a persistent internal error triggers a
reset. The existing warning message just says "due to AER", which can be
confused with the unrelated PCIe AER condition. Just say what the event
was instead of the generic overloaded acronym.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-23 09:52:04 -07:00
Jinjie Ruan
f4bd313993 nvmet: Make nvmet_debugfs static
The sparse tool complains as follows:

drivers/nvme/target/debugfs.c:16:15: warning:
	symbol 'nvmet_debugfs' was not declared. Should it be static?

This symbol is not used outside debugfs.c, so marks it static.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-23 09:50:16 -07:00
Jens Axboe
e6b09a1738 nvme fixes for Linux 6.11
- Remove unused struct field (Nilay)
  - Fix fabrics keep-alive teardown order (Ming)
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Merge tag 'nvme-6.11-2024-08-22' of git://git.infradead.org/nvme into block-6.11

Pull NVMe fixes from Keith:

"nvme fixes for Linux 6.11

 - Remove unused struct field (Nilay)
 - Fix fabrics keep-alive teardown order (Ming)"

* tag 'nvme-6.11-2024-08-22' of git://git.infradead.org/nvme:
  nvme: Remove unused field
  nvme: move stopping keep-alive into nvme_uninit_ctrl()
2024-08-22 16:20:24 -06:00
Nilay Shroff
fe01751347 nvme: Remove unused field
The "name" field in struct nvme_ctrl is unsued so removing it.
This would help save 12 bytes of space for each nvme_ctrl instance
created.

Signed-off-by: Nilay Shroff <nilay@linux.ibm.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-22 13:28:40 -07:00
Ming Lei
a54a93d0e3 nvme: move stopping keep-alive into nvme_uninit_ctrl()
Commit 4733b65d82 ("nvme: start keep-alive after admin queue setup")
moves starting keep-alive from nvme_start_ctrl() into
nvme_init_ctrl_finish(), but don't move stopping keep-alive into
nvme_uninit_ctrl(), so keep-alive work can be started and keep pending
after failing to start controller, finally use-after-free is triggered if
nvme host driver is unloaded.

This patch fixes kernel panic when running nvme/004 in case that connection
failure is triggered, by moving stopping keep-alive into nvme_uninit_ctrl().

This way is reasonable because keep-alive is now started in
nvme_init_ctrl_finish().

Fixes: 3af755a468 ("nvme: move nvme_stop_keep_alive() back to original position")
Cc: Hannes Reinecke <hare@suse.de>
Cc: Mark O'Donovan <shiftee@posteo.net>
Reported-by: Changhui Zhong <czhong@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-08-22 13:28:40 -07:00
John Garry
81475beb1b block: Drop NULL check in bdev_write_zeroes_sectors()
Function bdev_get_queue() must not return NULL, so drop the check in
bdev_write_zeroes_sectors().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Link: https://lore.kernel.org/r/20240815163228.216051-3-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-19 09:48:59 -06:00
John Garry
64b582ca88 block: Read max write zeroes once for __blkdev_issue_write_zeroes()
As reported in [0], we may get a hang when formatting a XFS FS on a RAID0
drive.

Commit 73a768d5f9 ("block: factor out a blk_write_zeroes_limit helper")
changed __blkdev_issue_write_zeroes() to read the max write zeroes
value in the loop. This is not safe as max write zeroes may change in
value. Specifically for the case of [0], the value goes to 0, and we get
an infinite loop.

Lift the limit reading out of the loop.

[0] https://lore.kernel.org/linux-xfs/4d31268f-310b-4220-88a2-e191c3932a82@oracle.com/T/#t

Fixes: 73a768d5f9 ("block: factor out a blk_write_zeroes_limit helper")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240815163228.216051-2-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-19 09:48:59 -06:00
Li Lingfeng
b313a8c835 block: Fix lockdep warning in blk_mq_mark_tag_wait
Lockdep reported a warning in Linux version 6.6:

[  414.344659] ================================
[  414.345155] WARNING: inconsistent lock state
[  414.345658] 6.6.0-07439-gba2303cacfda #6 Not tainted
[  414.346221] --------------------------------
[  414.346712] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
[  414.347545] kworker/u10:3/1152 [HC0[0]:SC0[0]:HE0:SE1] takes:
[  414.349245] ffff88810edd1098 (&sbq->ws[i].wait){+.?.}-{2:2}, at: blk_mq_dispatch_rq_list+0x131c/0x1ee0
[  414.351204] {IN-SOFTIRQ-W} state was registered at:
[  414.351751]   lock_acquire+0x18d/0x460
[  414.352218]   _raw_spin_lock_irqsave+0x39/0x60
[  414.352769]   __wake_up_common_lock+0x22/0x60
[  414.353289]   sbitmap_queue_wake_up+0x375/0x4f0
[  414.353829]   sbitmap_queue_clear+0xdd/0x270
[  414.354338]   blk_mq_put_tag+0xdf/0x170
[  414.354807]   __blk_mq_free_request+0x381/0x4d0
[  414.355335]   blk_mq_free_request+0x28b/0x3e0
[  414.355847]   __blk_mq_end_request+0x242/0xc30
[  414.356367]   scsi_end_request+0x2c1/0x830
[  414.345155] WARNING: inconsistent lock state
[  414.345658] 6.6.0-07439-gba2303cacfda #6 Not tainted
[  414.346221] --------------------------------
[  414.346712] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
[  414.347545] kworker/u10:3/1152 [HC0[0]:SC0[0]:HE0:SE1] takes:
[  414.349245] ffff88810edd1098 (&sbq->ws[i].wait){+.?.}-{2:2}, at: blk_mq_dispatch_rq_list+0x131c/0x1ee0
[  414.351204] {IN-SOFTIRQ-W} state was registered at:
[  414.351751]   lock_acquire+0x18d/0x460
[  414.352218]   _raw_spin_lock_irqsave+0x39/0x60
[  414.352769]   __wake_up_common_lock+0x22/0x60
[  414.353289]   sbitmap_queue_wake_up+0x375/0x4f0
[  414.353829]   sbitmap_queue_clear+0xdd/0x270
[  414.354338]   blk_mq_put_tag+0xdf/0x170
[  414.354807]   __blk_mq_free_request+0x381/0x4d0
[  414.355335]   blk_mq_free_request+0x28b/0x3e0
[  414.355847]   __blk_mq_end_request+0x242/0xc30
[  414.356367]   scsi_end_request+0x2c1/0x830
[  414.356863]   scsi_io_completion+0x177/0x1610
[  414.357379]   scsi_complete+0x12f/0x260
[  414.357856]   blk_complete_reqs+0xba/0xf0
[  414.358338]   __do_softirq+0x1b0/0x7a2
[  414.358796]   irq_exit_rcu+0x14b/0x1a0
[  414.359262]   sysvec_call_function_single+0xaf/0xc0
[  414.359828]   asm_sysvec_call_function_single+0x1a/0x20
[  414.360426]   default_idle+0x1e/0x30
[  414.360873]   default_idle_call+0x9b/0x1f0
[  414.361390]   do_idle+0x2d2/0x3e0
[  414.361819]   cpu_startup_entry+0x55/0x60
[  414.362314]   start_secondary+0x235/0x2b0
[  414.362809]   secondary_startup_64_no_verify+0x18f/0x19b
[  414.363413] irq event stamp: 428794
[  414.363825] hardirqs last  enabled at (428793): [<ffffffff816bfd1c>] ktime_get+0x1dc/0x200
[  414.364694] hardirqs last disabled at (428794): [<ffffffff85470177>] _raw_spin_lock_irq+0x47/0x50
[  414.365629] softirqs last  enabled at (428444): [<ffffffff85474780>] __do_softirq+0x540/0x7a2
[  414.366522] softirqs last disabled at (428419): [<ffffffff813f65ab>] irq_exit_rcu+0x14b/0x1a0
[  414.367425]
               other info that might help us debug this:
[  414.368194]  Possible unsafe locking scenario:
[  414.368900]        CPU0
[  414.369225]        ----
[  414.369548]   lock(&sbq->ws[i].wait);
[  414.370000]   <Interrupt>
[  414.370342]     lock(&sbq->ws[i].wait);
[  414.370802]
                *** DEADLOCK ***
[  414.371569] 5 locks held by kworker/u10:3/1152:
[  414.372088]  #0: ffff88810130e938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x357/0x13f0
[  414.373180]  #1: ffff88810201fdb8 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x3a3/0x13f0
[  414.374384]  #2: ffffffff86ffbdc0 (rcu_read_lock){....}-{1:2}, at: blk_mq_run_hw_queue+0x637/0xa00
[  414.375342]  #3: ffff88810edd1098 (&sbq->ws[i].wait){+.?.}-{2:2}, at: blk_mq_dispatch_rq_list+0x131c/0x1ee0
[  414.376377]  #4: ffff888106205a08 (&hctx->dispatch_wait_lock){+.-.}-{2:2}, at: blk_mq_dispatch_rq_list+0x1337/0x1ee0
[  414.378607]
               stack backtrace:
[  414.379177] CPU: 0 PID: 1152 Comm: kworker/u10:3 Not tainted 6.6.0-07439-gba2303cacfda #6
[  414.380032] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[  414.381177] Workqueue: writeback wb_workfn (flush-253:0)
[  414.381805] Call Trace:
[  414.382136]  <TASK>
[  414.382429]  dump_stack_lvl+0x91/0xf0
[  414.382884]  mark_lock_irq+0xb3b/0x1260
[  414.383367]  ? __pfx_mark_lock_irq+0x10/0x10
[  414.383889]  ? stack_trace_save+0x8e/0xc0
[  414.384373]  ? __pfx_stack_trace_save+0x10/0x10
[  414.384903]  ? graph_lock+0xcf/0x410
[  414.385350]  ? save_trace+0x3d/0xc70
[  414.385808]  mark_lock.part.20+0x56d/0xa90
[  414.386317]  mark_held_locks+0xb0/0x110
[  414.386791]  ? __pfx_do_raw_spin_lock+0x10/0x10
[  414.387320]  lockdep_hardirqs_on_prepare+0x297/0x3f0
[  414.387901]  ? _raw_spin_unlock_irq+0x28/0x50
[  414.388422]  trace_hardirqs_on+0x58/0x100
[  414.388917]  _raw_spin_unlock_irq+0x28/0x50
[  414.389422]  __blk_mq_tag_busy+0x1d6/0x2a0
[  414.389920]  __blk_mq_get_driver_tag+0x761/0x9f0
[  414.390899]  blk_mq_dispatch_rq_list+0x1780/0x1ee0
[  414.391473]  ? __pfx_blk_mq_dispatch_rq_list+0x10/0x10
[  414.392070]  ? sbitmap_get+0x2b8/0x450
[  414.392533]  ? __blk_mq_get_driver_tag+0x210/0x9f0
[  414.393095]  __blk_mq_sched_dispatch_requests+0xd99/0x1690
[  414.393730]  ? elv_attempt_insert_merge+0x1b1/0x420
[  414.394302]  ? __pfx___blk_mq_sched_dispatch_requests+0x10/0x10
[  414.394970]  ? lock_acquire+0x18d/0x460
[  414.395456]  ? blk_mq_run_hw_queue+0x637/0xa00
[  414.395986]  ? __pfx_lock_acquire+0x10/0x10
[  414.396499]  blk_mq_sched_dispatch_requests+0x109/0x190
[  414.397100]  blk_mq_run_hw_queue+0x66e/0xa00
[  414.397616]  blk_mq_flush_plug_list.part.17+0x614/0x2030
[  414.398244]  ? __pfx_blk_mq_flush_plug_list.part.17+0x10/0x10
[  414.398897]  ? writeback_sb_inodes+0x241/0xcc0
[  414.399429]  blk_mq_flush_plug_list+0x65/0x80
[  414.399957]  __blk_flush_plug+0x2f1/0x530
[  414.400458]  ? __pfx___blk_flush_plug+0x10/0x10
[  414.400999]  blk_finish_plug+0x59/0xa0
[  414.401467]  wb_writeback+0x7cc/0x920
[  414.401935]  ? __pfx_wb_writeback+0x10/0x10
[  414.402442]  ? mark_held_locks+0xb0/0x110
[  414.402931]  ? __pfx_do_raw_spin_lock+0x10/0x10
[  414.403462]  ? lockdep_hardirqs_on_prepare+0x297/0x3f0
[  414.404062]  wb_workfn+0x2b3/0xcf0
[  414.404500]  ? __pfx_wb_workfn+0x10/0x10
[  414.404989]  process_scheduled_works+0x432/0x13f0
[  414.405546]  ? __pfx_process_scheduled_works+0x10/0x10
[  414.406139]  ? do_raw_spin_lock+0x101/0x2a0
[  414.406641]  ? assign_work+0x19b/0x240
[  414.407106]  ? lock_is_held_type+0x9d/0x110
[  414.407604]  worker_thread+0x6f2/0x1160
[  414.408075]  ? __kthread_parkme+0x62/0x210
[  414.408572]  ? lockdep_hardirqs_on_prepare+0x297/0x3f0
[  414.409168]  ? __kthread_parkme+0x13c/0x210
[  414.409678]  ? __pfx_worker_thread+0x10/0x10
[  414.410191]  kthread+0x33c/0x440
[  414.410602]  ? __pfx_kthread+0x10/0x10
[  414.411068]  ret_from_fork+0x4d/0x80
[  414.411526]  ? __pfx_kthread+0x10/0x10
[  414.411993]  ret_from_fork_asm+0x1b/0x30
[  414.412489]  </TASK>

When interrupt is turned on while a lock holding by spin_lock_irq it
throws a warning because of potential deadlock.

blk_mq_prep_dispatch_rq
 blk_mq_get_driver_tag
  __blk_mq_get_driver_tag
   __blk_mq_alloc_driver_tag
    blk_mq_tag_busy -> tag is already busy
    // failed to get driver tag
 blk_mq_mark_tag_wait
  spin_lock_irq(&wq->lock) -> lock A (&sbq->ws[i].wait)
  __add_wait_queue(wq, wait) -> wait queue active
  blk_mq_get_driver_tag
  __blk_mq_tag_busy
-> 1) tag must be idle, which means there can't be inflight IO
   spin_lock_irq(&tags->lock) -> lock B (hctx->tags)
   spin_unlock_irq(&tags->lock) -> unlock B, turn on interrupt accidentally
-> 2) context must be preempt by IO interrupt to trigger deadlock.

As shown above, the deadlock is not possible in theory, but the warning
still need to be fixed.

Fix it by using spin_lock_irqsave to get lockB instead of spin_lock_irq.

Fixes: 4f1731df60 ("blk-mq: fix potential io hang by wrong 'wake_batch'")
Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240815024736.2040971-1-lilingfeng@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-15 19:25:03 -06:00
Jens Axboe
50faba7771 Merge tag 'md-6.11-20240815' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-6.11
Pull MD fix from Song:

"This patch fixes a potential data corruption in degraded raid0 array
 with slow (WriteMostly) drives. This issue was introduced in upstream
 6.9 kernel."

* tag 'md-6.11-20240815' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md/raid1: Fix data corruption for degraded array with slow disk
2024-08-15 14:53:08 -06:00
Yu Kuai
c916ca3530 md/raid1: Fix data corruption for degraded array with slow disk
read_balance() will avoid reading from slow disks as much as possible,
however, if valid data only lands in slow disks, and a new normal disk
is still in recovery, unrecovered data can be read:

raid1_read_request
 read_balance
  raid1_should_read_first
  -> return false
  choose_best_rdev
  -> normal disk is not recovered, return -1
  choose_bb_rdev
  -> missing the checking of recovery, return the normal disk
 -> read unrecovered data

Root cause is that the checking of recovery is missing in
choose_bb_rdev(). Hence add such checking to fix the problem.

Also fix similar problem in choose_slow_rdev().

Cc: stable@vger.kernel.org
Fixes: 9f3ced7922 ("md/raid1: factor out choose_bb_rdev() from read_balance()")
Fixes: dfa8ecd167 ("md/raid1: factor out choose_slow_rdev() from read_balance()")
Reported-and-tested-by: Mateusz Jończyk <mat.jonczyk@o2.pl>
Closes: https://lore.kernel.org/all/9952f532-2554-44bf-b906-4880b2e88e3a@o2.pl/
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240803091137.3197008-1-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
2024-08-15 13:38:17 -07:00
Stefan Haberland
7db4042336 s390/dasd: fix error recovery leading to data corruption on ESE devices
Extent Space Efficient (ESE) or thin provisioned volumes need to be
formatted on demand during usual IO processing.

The dasd_ese_needs_format function checks for error codes that signal
the non existence of a proper track format.

The check for incorrect length is to imprecise since other error cases
leading to transport of insufficient data also have this flag set.
This might lead to data corruption in certain error cases for example
during a storage server warmstart.

Fix by removing the check for incorrect length and replacing by
explicitly checking for invalid track format in transport mode.

Also remove the check for file protected since this is not a valid
ESE handling case.

Cc: stable@vger.kernel.org # 5.3+
Fixes: 5e2b17e712 ("s390/dasd: Add dynamic formatting support for ESE volumes")
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20240812125733.126431-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-12 10:31:08 -06:00
Eric Farman
2a07bb64d8 s390/dasd: Remove DMA alignment
This reverts commit bc792884b7 ("s390/dasd: Establish DMA alignment").

Quoting the original commit:
    linux-next commit bf8d08532b ("iomap: add support for dma aligned
    direct-io") changes the alignment requirement to come from the block
    device rather than the block size, and the default alignment
    requirement is 512-byte boundaries. Since DASD I/O has page
    alignments for IDAW/TIDAW requests, let's override this value to
    restore the expected behavior.

I mentioned TIDAW, but that was wrong. TIDAWs have no distinct alignment
requirement (per p. 15-70 of POPS SA22-7832-13):

   Unless otherwise specified, TIDAWs may designate
   a block of main storage on any boundary and length
   up to 4K bytes, provided the specified block does not
   cross a 4 K-byte boundary.

IDAWs do, but the original commit neglected that while ECKD DASD are
typically formatted in 4096-byte blocks, they don't HAVE to be. Formatting
an ECKD volume with smaller blocks is permitted (dasdfmt -b xxx), and the
problematic commit enforces alignment properties to such a device that
will result in errors, such as:

   [test@host ~]# lsdasd -l a367 | grep blksz
     blksz:				512
   [test@host ~]# mkfs.xfs -f /dev/disk/by-path/ccw-0.0.a367-part1
   meta-data=/dev/dasdc1            isize=512    agcount=4, agsize=230075 blks
            =                       sectsz=512   attr=2, projid32bit=1
            =                       crc=1        finobt=1, sparse=1, rmapbt=1
            =                       reflink=1    bigtime=1 inobtcount=1 nrext64=1
   data     =                       bsize=4096   blocks=920299, imaxpct=25
            =                       sunit=0      swidth=0 blks
   naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
   log      =internal log           bsize=4096   blocks=16384, version=2
            =                       sectsz=512   sunit=0 blks, lazy-count=1
   realtime =none                   extsz=4096   blocks=0, rtextents=0
   error reading existing superblock: Invalid argument
   mkfs.xfs: pwrite failed: Invalid argument
   libxfs_bwrite: write failed on (unknown) bno 0x70565c/0x100, err=22
   mkfs.xfs: Releasing dirty buffer to free list!
   found dirty buffer (bulk) on free list!
   mkfs.xfs: pwrite failed: Invalid argument
   ...snipped...

The original commit omitted the FBA discipline for just this reason,
but the formatted block size of the other disciplines was overlooked.
The solution to all of this is to revert to the original behavior,
such that the block size can be respected. There were two commits [1]
that moved this code in the interim, so a straight git-revert is not
possible, but the change is straightforward.

But what of the original problem? That was manifested with a direct-io
QEMU guest, where QEMU itself was changed a month or two later with
commit 25474d90aa ("block: use the request length for iov alignment")
such that the blamed kernel commit is unnecessary.

[1] commit 0127a47f58 ("dasd: move queue setup to common code")
    commit fde07a4d74 ("dasd: use the atomic queue limits API")

Fixes: bc792884b7 ("s390/dasd: Establish DMA alignment")
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20240812125733.126431-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-12 10:31:08 -06:00
Jens Axboe
eded04fe3b nvme fixes for Linux 6.11
- Cleanups and improved struct packing (Kanchan)
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Merge tag 'nvme-6.11-2024-08-08' of git://git.infradead.org/nvme into block-6.11

Pull NVMe fixes from Keith:

"nvme fixes for Linux 6.11

 - Cleanups and improved struct packing (Kanchan)"

* tag 'nvme-6.11-2024-08-08' of git://git.infradead.org/nvme:
  nvme: reorganize nvme_ns_head fields
  nvme: change data type of lba_shift
  nvme: remove a field from nvme_ns_head
  nvme: remove unused parameter
2024-08-08 12:27:40 -06:00
Kanchan Joshi
b4c1f33a5d nvme: reorganize nvme_ns_head fields
shuffle few fields to reduce the holes within nvme_ns_head.
On x86_64, the size is reduced to 1104 bytes from 1120 bytes.

Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-07-31 07:40:10 -07:00
Kanchan Joshi
73d148ccb9 nvme: change data type of lba_shift
u8 fits the need, so stop using int for it.

Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-07-31 07:40:10 -07:00
Kanchan Joshi
6339b7edad nvme: remove a field from nvme_ns_head
pi_offset field is not required to be present in nvme_ns_head.

Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-07-31 07:40:10 -07:00
Kanchan Joshi
7ec5bd247a nvme: remove unused parameter
First parameter of nvme_init_integrity() is unused.
Remove it, and modify the callers.

Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-07-29 07:27:58 -07:00
Dr. David Alan Gilbert
01aa8c869d blk-throttle: remove more latency dead-code
The struct 'latency_bucket' and the #define 'request_bucket_index'
are unused since
commit bf20ab538c ("blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW")

and the 'LATENCY_BUCKET_SIZE' #define was only used by the
'request_bucket_index' define.

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20240727155824.1000042-1-linux@treblig.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-27 10:33:25 -06:00
Jens Axboe
f6bb5254b7 nvme fixes for Linux 6.11
- Fix request without payloads cleanup  (Leon)
  - Use new protection information format (Francis)
  - Improved debug message for lost pci link (Bart)
  - Another apst quirk (Wang)
  - Use appropriate sysfs api for printing chars (Markus)
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Merge tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme into block-6.11

Pull NVMe fixes from Keith:

"nvme fixes for Linux 6.11

 - Fix request without payloads cleanup  (Leon)
 - Use new protection information format (Francis)
 - Improved debug message for lost pci link (Bart)
 - Another apst quirk (Wang)
 - Use appropriate sysfs api for printing chars (Markus)"

* tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme:
  nvme-pci: add missing condition check for existence of mapped data
  nvme-core: choose PIF from QPIF if QPIFS supports and PIF is QTYPE
  nvme-pci: Fix the instructions for disabling power management
  nvme: remove redundant bdev local variable
  nvme-fabrics: Use seq_putc() in __nvmf_concat_opt_tokens()
  nvme/pci: Add APST quirk for Lenovo N60z laptop
2024-07-26 08:06:15 -06:00
Leon Romanovsky
c31fad1470 nvme-pci: add missing condition check for existence of mapped data
nvme_map_data() is called when request has physical segments, hence
the nvme_unmap_data() should have same condition to avoid dereference.

Fixes: 4aedb70543 ("nvme-pci: split metadata handling from nvme_map_data / nvme_unmap_data")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-07-25 07:20:54 -07:00
Ming Lei
55fbb9a5d6 ublk: fix UBLK_CMD_DEL_DEV_ASYNC handling
In ublk_ctrl_uring_cmd(), ioctl command NR should be used for
matching _IOC_NR(cmd_op).

Fix it by adding one private macro, and this way is clean.

Fixes: 13fe8e6825 ("ublk: add UBLK_CMD_DEL_DEV_ASYNC")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240724143311.2646330-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-24 09:51:46 -06:00
Yang Yang
7e04da2dc7 block: fix deadlock between sd_remove & sd_release
Our test report the following hung task:

[ 2538.459400] INFO: task "kworker/0:0":7 blocked for more than 188 seconds.
[ 2538.459427] Call trace:
[ 2538.459430]  __switch_to+0x174/0x338
[ 2538.459436]  __schedule+0x628/0x9c4
[ 2538.459442]  schedule+0x7c/0xe8
[ 2538.459447]  schedule_preempt_disabled+0x24/0x40
[ 2538.459453]  __mutex_lock+0x3ec/0xf04
[ 2538.459456]  __mutex_lock_slowpath+0x14/0x24
[ 2538.459459]  mutex_lock+0x30/0xd8
[ 2538.459462]  del_gendisk+0xdc/0x350
[ 2538.459466]  sd_remove+0x30/0x60
[ 2538.459470]  device_release_driver_internal+0x1c4/0x2c4
[ 2538.459474]  device_release_driver+0x18/0x28
[ 2538.459478]  bus_remove_device+0x15c/0x174
[ 2538.459483]  device_del+0x1d0/0x358
[ 2538.459488]  __scsi_remove_device+0xa8/0x198
[ 2538.459493]  scsi_forget_host+0x50/0x70
[ 2538.459497]  scsi_remove_host+0x80/0x180
[ 2538.459502]  usb_stor_disconnect+0x68/0xf4
[ 2538.459506]  usb_unbind_interface+0xd4/0x280
[ 2538.459510]  device_release_driver_internal+0x1c4/0x2c4
[ 2538.459514]  device_release_driver+0x18/0x28
[ 2538.459518]  bus_remove_device+0x15c/0x174
[ 2538.459523]  device_del+0x1d0/0x358
[ 2538.459528]  usb_disable_device+0x84/0x194
[ 2538.459532]  usb_disconnect+0xec/0x300
[ 2538.459537]  hub_event+0xb80/0x1870
[ 2538.459541]  process_scheduled_works+0x248/0x4dc
[ 2538.459545]  worker_thread+0x244/0x334
[ 2538.459549]  kthread+0x114/0x1bc

[ 2538.461001] INFO: task "fsck.":15415 blocked for more than 188 seconds.
[ 2538.461014] Call trace:
[ 2538.461016]  __switch_to+0x174/0x338
[ 2538.461021]  __schedule+0x628/0x9c4
[ 2538.461025]  schedule+0x7c/0xe8
[ 2538.461030]  blk_queue_enter+0xc4/0x160
[ 2538.461034]  blk_mq_alloc_request+0x120/0x1d4
[ 2538.461037]  scsi_execute_cmd+0x7c/0x23c
[ 2538.461040]  ioctl_internal_command+0x5c/0x164
[ 2538.461046]  scsi_set_medium_removal+0x5c/0xb0
[ 2538.461051]  sd_release+0x50/0x94
[ 2538.461054]  blkdev_put+0x190/0x28c
[ 2538.461058]  blkdev_release+0x28/0x40
[ 2538.461063]  __fput+0xf8/0x2a8
[ 2538.461066]  __fput_sync+0x28/0x5c
[ 2538.461070]  __arm64_sys_close+0x84/0xe8
[ 2538.461073]  invoke_syscall+0x58/0x114
[ 2538.461078]  el0_svc_common+0xac/0xe0
[ 2538.461082]  do_el0_svc+0x1c/0x28
[ 2538.461087]  el0_svc+0x38/0x68
[ 2538.461090]  el0t_64_sync_handler+0x68/0xbc
[ 2538.461093]  el0t_64_sync+0x1a8/0x1ac

  T1:				T2:
  sd_remove
  del_gendisk
  __blk_mark_disk_dead
  blk_freeze_queue_start
  ++q->mq_freeze_depth
  				bdev_release
 				mutex_lock(&disk->open_mutex)
  				sd_release
 				scsi_execute_cmd
 				blk_queue_enter
 				wait_event(!q->mq_freeze_depth)
  mutex_lock(&disk->open_mutex)

SCSI does not set GD_OWNS_QUEUE, so QUEUE_FLAG_DYING is not set in
this scenario. This is a classic ABBA deadlock. To fix the deadlock,
make sure we don't try to acquire disk->open_mutex after freezing
the queue.

Cc: stable@vger.kernel.org
Fixes: eec1be4c30 ("block: delete partitions later in del_gendisk")
Signed-off-by: Yang Yang <yang.yang@vivo.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixes: and Cc: stable tags are missing. Otherwise this patch looks fine
Link: https://lore.kernel.org/r/20240724070412.22521-1-yang.yang@vivo.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-24 09:51:21 -06:00
Simon Horman
b8a4518b5c drbd: Add peer_device to Kernel doc
Add missing documentation of peer_device parameter to Kernel doc.

These parameters were added in commit 8164dd6c8a ("drbd: Add peer
device parameter to whole-bitmap I/O handlers")

Flagged by W=1 builds.

Signed-off-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240723-drbd-doc-v1-1-a04d9b7a9688@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-23 07:31:38 -06:00
Linus Torvalds
66ebbdfdeb Switch ARM/ARM64 over to the modern per device MSI domains:
This simplifies the handling of platform MSI and wire to MSI controllers
   and removes about 500 lines of legacy code.
 
   Aside of that it paves the way for ARM/ARM64 to utilize the dynamic
   allocation of PCI/MSI interrupts and to support the upcoming non
   standard IMS (Interrupt Message Store) mechanism on PCIe devices
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Merge tag 'irq-msi-2024-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull MSI interrupt updates from Thomas Gleixner:
 "Switch ARM/ARM64 over to the modern per device MSI domains.

  This simplifies the handling of platform MSI and wire to MSI
  controllers and removes about 500 lines of legacy code.

  Aside of that it paves the way for ARM/ARM64 to utilize the dynamic
  allocation of PCI/MSI interrupts and to support the upcoming non
  standard IMS (Interrupt Message Store) mechanism on PCIe devices"

* tag 'irq-msi-2024-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  irqchip/gic-v3-its: Correctly fish out the DID for platform MSI
  irqchip/gic-v3-its: Correctly honor the RID remapping
  genirq/msi: Move msi_device_data to core
  genirq/msi: Remove platform MSI leftovers
  irqchip/irq-mvebu-icu: Remove platform MSI leftovers
  irqchip/irq-mvebu-sei: Switch to MSI parent
  irqchip/mvebu-odmi: Switch to parent MSI
  irqchip/mvebu-gicp: Switch to MSI parent
  irqchip/irq-mvebu-icu: Prepare for real per device MSI
  irqchip/imx-mu-msi: Switch to MSI parent
  irqchip/gic-v2m: Switch to device MSI
  irqchip/gic_v3_mbi: Switch over to parent domain
  genirq/msi: Remove platform_msi_create_device_domain()
  irqchip/mbigen: Remove platform_msi_create_device_domain() fallback
  irqchip/gic-v3-its: Switch platform MSI to MSI parent
  irqchip/irq-msi-lib: Prepare for DOMAIN_BUS_WIRED_TO_MSI
  irqchip/mbigen: Prepare for real per device MSI
  irqchip/irq-msi-lib: Prepare for DEVICE MSI to replace platform MSI
  irqchip/gic-v3-its: Provide MSI parent for PCI/MSI[-X]
  irqchip/irq-msi-lib: Prepare for PCI MSI/MSIX
  ...
2024-07-22 14:02:19 -07:00
Linus Torvalds
ac7473a179 Updates for the interrupt subsystem:
- Core:
 
     - Provide a new mechanism to create interrupt domains. The existing
       interfaces have already too many parameters and it's a pain to expand
       any of this for new required functionality.
 
       The new function takes a pointer to a data structure as argument. The
       data structure combines all existing parameters and allows for easy
       extension.
 
       The first extension for this is to handle the instantiation of
       generic interrupt chips at the core level and to allow drivers to
       provide extra init/exit callbacks.
 
       This is necessary to do the full interrupt chip initialization before
       the new domain is published, so that concurrent usage sites won't see
       a half initialized interrupt domain. Similar problems exist on
       teardown.
 
       This has turned out to be a real problem due to the deferred and
       parallel probing which was added in recent years.
 
       Handling this at the core level allows to remove quite some accrued
       boilerplate code in existing drivers and avoids horrible workarounds
       at the driver level.
 
     - The usual small improvements all over the place
 
   - Drivers
 
     - Add support for LAN966x OIC and RZ/Five SoC
 
     - Split the STM ExtI driver into a microcontroller and a SMP version to
       allow building the latter as a module for multi-platform kernels.
 
     - Enable MSI support for Armada 370XP on platforms which do not support
       IPIs.
 
     - The usual small fixes and enhancements all over the place.
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Merge tag 'irq-core-2024-07-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt subsystem updates from Thomas Gleixner:
 "Core:

   - Provide a new mechanism to create interrupt domains. The existing
     interfaces have already too many parameters and it's a pain to
     expand any of this for new required functionality.

     The new function takes a pointer to a data structure as argument.
     The data structure combines all existing parameters and allows for
     easy extension.

     The first extension for this is to handle the instantiation of
     generic interrupt chips at the core level and to allow drivers to
     provide extra init/exit callbacks.

     This is necessary to do the full interrupt chip initialization
     before the new domain is published, so that concurrent usage sites
     won't see a half initialized interrupt domain. Similar problems
     exist on teardown.

     This has turned out to be a real problem due to the deferred and
     parallel probing which was added in recent years.

     Handling this at the core level allows to remove quite some accrued
     boilerplate code in existing drivers and avoids horrible
     workarounds at the driver level.

   - The usual small improvements all over the place

  Drivers:

   - Add support for LAN966x OIC and RZ/Five SoC

   - Split the STM ExtI driver into a microcontroller and a SMP version
     to allow building the latter as a module for multi-platform
     kernels

   - Enable MSI support for Armada 370XP on platforms which do not
     support IPIs

   - The usual small fixes and enhancements all over the place"

* tag 'irq-core-2024-07-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (59 commits)
  irqdomain: Fix the kernel-doc and plug it into Documentation
  genirq: Set IRQF_COND_ONESHOT in request_irq()
  irqchip/imx-irqsteer: Handle runtime power management correctly
  irqchip/gic-v3: Pass #redistributor-regions to gic_of_setup_kvm_info()
  irqchip/bcm2835: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
  irqchip/gic-v4: Make sure a VPE is locked when VMAPP is issued
  irqchip/gic-v4: Substitute vmovp_lock for a per-VM lock
  irqchip/gic-v4: Always configure affinity on VPE activation
  Revert "irqchip/dw-apb-ictl: Support building as module"
  Revert "Loongarch: Support loongarch avec"
  arm64: Kconfig: Allow build irq-stm32mp-exti driver as module
  ARM: stm32: Allow build irq-stm32mp-exti driver as module
  irqchip/stm32mp-exti: Allow building as module
  irqchip/stm32mp-exti: Rename internal symbols
  irqchip/stm32-exti: Split MCU and MPU code
  arm64: Kconfig: Select STM32MP_EXTI on STM32 platforms
  ARM: stm32: Use different EXTI driver on ARMv7m and ARMv7a
  irqchip/stm32-exti: Add CONFIG_STM32MP_EXTI
  irqchip/dw-apb-ictl: Support building as module
  irqchip/riscv-aplic: Simplify the initialization code
  ...
2024-07-22 13:52:05 -07:00
Linus Torvalds
a362ade892 LoongArch changes for v6.11
1, Define __ARCH_WANT_NEW_STAT in unistd.h;
 2, Always enumerate MADT and setup logical-physical CPU mapping;
 3, Add irq_work support via self IPIs;
 4, Add RANDOMIZE_KSTACK_OFFSET support;
 5, Add ARCH_HAS_PTE_DEVMAP support;
 6, Add ARCH_HAS_DEBUG_VM_PGTABLE support;
 7, Add writecombine support for DMW-based ioremap();
 8, Add architectural preparation for CPUFreq;
 9, Add ACPI standard hardware register based S3 support;
 10, Add support for relocating the kernel with RELR relocation;
 11, Some bug fixes and other small changes.
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Merge tag 'loongarch-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Define __ARCH_WANT_NEW_STAT in unistd.h

 - Always enumerate MADT and setup logical-physical CPU mapping

 - Add irq_work support via self IPIs

 - Add RANDOMIZE_KSTACK_OFFSET support

 - Add ARCH_HAS_PTE_DEVMAP support

 - Add ARCH_HAS_DEBUG_VM_PGTABLE support

 - Add writecombine support for DMW-based ioremap()

 - Add architectural preparation for CPUFreq

 - Add ACPI standard hardware register based S3 support

 - Add support for relocating the kernel with RELR relocation

 - Some bug fixes and other small changes

* tag 'loongarch-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Make the users of larch_insn_gen_break() constant
  LoongArch: Check TIF_LOAD_WATCH to enable user space watchpoint
  LoongArch: Use rustc option -Zdirect-access-external-data
  LoongArch: Add support for relocating the kernel with RELR relocation
  LoongArch: Remove a redundant checking in relocator
  LoongArch: Use correct API to map cmdline in relocate_kernel()
  LoongArch: Automatically disable KASLR for hibernation
  LoongArch: Add ACPI standard hardware register based S3 support
  LoongArch: Add architectural preparation for CPUFreq
  LoongArch: Add writecombine support for DMW-based ioremap()
  LoongArch: Add ARCH_HAS_DEBUG_VM_PGTABLE support
  LoongArch: Add ARCH_HAS_PTE_DEVMAP support
  LoongArch: Add RANDOMIZE_KSTACK_OFFSET support
  LoongArch: Add irq_work support via self IPIs
  LoongArch: Always enumerate MADT and setup logical-physical CPU mapping
  LoongArch: Define __ARCH_WANT_NEW_STAT in unistd.h
2024-07-22 13:44:22 -07:00
Linus Torvalds
539fbb9123 Thermal control fix for 6.11-rc1
Fix a flood of kernel messages coming from the thermal core on systems
 where iwlwifi is loaded, but the network interfaces controlled by it
 are down (Rafael Wysocki).
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Merge tag 'thermal-6.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fix from Rafael Wysocki:
 "Fix a flood of kernel messages coming from the thermal core on systems
  where iwlwifi is loaded, but the network interfaces controlled by it
  are down (Rafael Wysocki)"

* tag 'thermal-6.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: core: Allow thermal zones to tell the core to ignore them
2024-07-22 12:13:48 -07:00
Linus Torvalds
9deed1d5f8 io_uring-6.11-20240722
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Merge tag 'io_uring-6.11-20240722' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:
 "Two minor fixes in here, both heading to stable. In detail:

   - Fix error where forced async uring_cmd getsockopt returns the wrong
     value on execution, leading to it never being completed (Pavel)

   - Fix io_alloc_pbuf_ring() using a NULL check rather than IS_ERR
     (Pavel)"

* tag 'io_uring-6.11-20240722' of git://git.kernel.dk/linux:
  io_uring: fix error pbuf checking
  io_uring: fix lost getsockopt completions
2024-07-22 11:45:48 -07:00
Linus Torvalds
7d080fa867 for-6.11/block-20240722
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Merge tag 'for-6.11/block-20240722' of git://git.kernel.dk/linux

Pull more block updates from Jens Axboe:

 - MD fixes via Song:
     - md-cluster fixes (Heming Zhao)
     - raid1 fix (Mateusz Jończyk)

 - s390/dasd module description (Jeff)

 - Series cleaning up and hardening the blk-mq debugfs flag handling
   (John, Christoph)

 - blk-cgroup cleanup (Xiu)

 - Error polled IO attempts if backend doesn't support it (hexue)

 - Fix for an sbitmap hang (Yang)

* tag 'for-6.11/block-20240722' of git://git.kernel.dk/linux: (23 commits)
  blk-cgroup: move congestion_count to struct blkcg
  sbitmap: fix io hung due to race on sbitmap_word::cleared
  block: avoid polling configuration errors
  block: Catch possible entries missing from rqf_name[]
  block: Simplify definition of RQF_NAME()
  block: Use enum to define RQF_x bit indexes
  block: Catch possible entries missing from cmd_flag_name[]
  block: Catch possible entries missing from alloc_policy_name[]
  block: Catch possible entries missing from hctx_flag_name[]
  block: Catch possible entries missing from hctx_state_name[]
  block: Catch possible entries missing from blk_queue_flag_name[]
  block: Make QUEUE_FLAG_x as an enum
  block: Relocate BLK_MQ_MAX_DEPTH
  block: Relocate BLK_MQ_CPU_WORK_BATCH
  block: remove QUEUE_FLAG_STOPPED
  block: Add missing entry to hctx_flag_name[]
  block: Add zone write plugging entry to rqf_name[]
  block: Add missing entries from cmd_flag_name[]
  s390/dasd: fix error checks in dasd_copy_pair_store()
  s390/dasd: add missing MODULE_DESCRIPTION() macros
  ...
2024-07-22 11:32:05 -07:00
Linus Torvalds
0256994887 for-6.11/block-post-20240722
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Merge tag 'for-6.11/block-post-20240722' of git://git.kernel.dk/linux

Pull block integrity mapping updates from Jens Axboe:
 "A set of cleanups and fixes for the block integrity support.

  Sent separately from the main block changes from last week, as they
  depended on later fixes in the 6.10-rc cycle"

* tag 'for-6.11/block-post-20240722' of git://git.kernel.dk/linux:
  block: don't free the integrity payload in bio_integrity_unmap_free_user
  block: don't free submitter owned integrity payload on I/O completion
  block: call bio_integrity_unmap_free_user from blk_rq_unmap_user
  block: don't call bio_uninit from bio_endio
  block: also return bio_integrity_payload * from stubs
  block: split integrity support out of bio.h
2024-07-22 11:04:09 -07:00
Linus Torvalds
dd018c238b bcachefs fixes for 6.11-rc1
- another fix for fsck getting stuck, from marcin
 - small syzbot fix
 - another undefined shift fix
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Merge tag 'bcachefs-2024-07-22' of https://evilpiepirate.org/git/bcachefs

Pull bcachefs fixes from Kent Overstreet:

 - another fix for fsck getting stuck, from marcin

 - small syzbot fix

 - another undefined shift fix

* tag 'bcachefs-2024-07-22' of https://evilpiepirate.org/git/bcachefs:
  bcachefs: Fix printbuf usage while atomic
  bcachefs: More informative error message in reattach_inode()
  bcachefs: kill btree_trans_too_many_iters() in bch2_bucket_alloc_freelist()
  bcachefs: mean_and_variance: Avoid too-large shift amounts
2024-07-22 10:59:08 -07:00
Linus Torvalds
5ea6d72489 ntfs3 changes for 6.11-rc1
Added:
     simple fileattr has been implement.
 Fixed:
     transform resident to nonresident for compressed files;
     the format of the "nocase" mount option;
     getting file type;
     many other internal bugs.
 Refactored:
     unused function and macros have been removed;
     partial transition from page to folio (suggested by Matthew Wilcox);
     legacy ntfs support.
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Merge tag 'ntfs3_for_6.11' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:
 "New code:
   - simple fileattr support

  Fixes:
   - transform resident to nonresident for compressed files
   - the format of the "nocase" mount option
   - getting file type
   - many other internal bugs

  Refactoring:
   - remove unused functions and macros
   - partial transition from page to folio (suggested by Matthew Wilcox)
   - legacy ntfs support"

* tag 'ntfs3_for_6.11' of https://github.com/Paragon-Software-Group/linux-ntfs3: (42 commits)
  fs/ntfs3: Fix formatting, change comments, renaming
  fs/ntfs3: Update log->page_{mask,bits} if log->page_size changed
  fs/ntfs3: Implement simple fileattr
  fs/ntfs3: Redesign legacy ntfs support
  fs/ntfs3: Use function file_inode to get inode from file
  fs/ntfs3: Minor ntfs_list_ea refactoring
  fs/ntfs3: Check more cases when directory is corrupted
  fs/ntfs3: Do copy_to_user out of run_lock
  fs/ntfs3: Keep runs for $MFT::$ATTR_DATA and $MFT::$ATTR_BITMAP
  fs/ntfs3: Missed error return
  fs/ntfs3: Fix the format of the "nocase" mount option
  fs/ntfs3: Fix field-spanning write in INDEX_HDR
  ntfs3: Convert attr_wof_frame_info() to use a folio
  ntfs3: Convert ni_readpage_cmpr() to take a folio
  ntfs3: Convert ntfs_get_frame_pages() to use a folio
  ntfs3: Remove calls to set/clear the error flag
  ntfs3: Convert attr_make_nonresident to use a folio
  ntfs3: Convert attr_data_write_resident to use a folio
  ntfs3: Convert ntfs_write_end() to work on a folio
  ntfs3: Convert attr_data_read_resident() to take a folio
  ...
2024-07-22 10:50:18 -07:00
Kent Overstreet
737759fc09 bcachefs: Fix printbuf usage while atomic
Reported-by: syzbot+f765e51170cf13493f0b@syzkaller.appspotmail.com
Fixes: f12410bb7d ("bcachefs: Add an error message for insufficient rw journal devs")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-22 11:27:15 -04:00
Kent Overstreet
7a086baad0 bcachefs: More informative error message in reattach_inode()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-07-22 11:27:15 -04:00
Linus Torvalds
933069701c four ksmbd server fixes
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Merge tag '6.11-rc-smb3-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - two durable handle improvements

 - two small cleanup patches

* tag '6.11-rc-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: add durable scavenger timer
  ksmbd: avoid reclaiming expired durable opens by the client
  ksmbd: Constify struct ksmbd_transport_ops
  ksmbd: remove duplicate SMB2 Oplock levels definitions
2024-07-21 20:50:39 -07:00
Linus Torvalds
527eff227d - In the series "treewide: Refactor heap related implementation",
Kuan-Wei Chiu has significantly reworked the min_heap library code and
   has taught bcachefs to use the new more generic implementation.
 
 - Yury Norov's series "Cleanup cpumask.h inclusion in core headers"
   reworks the cpumask and nodemask headers to make things generally more
   rational.
 
 - Kuan-Wei Chiu has sent along some maintenance work against our sorting
   library code in the series "lib/sort: Optimizations and cleanups".
 
 - More library maintainance work from Christophe Jaillet in the series
   "Remove usage of the deprecated ida_simple_xx() API".
 
 - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the
   series "nilfs2: eliminate the call to inode_attach_wb()".
 
 - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB
   command error".
 
 - Plus the usual shower of singleton patches all over the place.  Please
   see the relevant changelogs for details.
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Merge tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - In the series "treewide: Refactor heap related implementation",
   Kuan-Wei Chiu has significantly reworked the min_heap library code
   and has taught bcachefs to use the new more generic implementation.

 - Yury Norov's series "Cleanup cpumask.h inclusion in core headers"
   reworks the cpumask and nodemask headers to make things generally
   more rational.

 - Kuan-Wei Chiu has sent along some maintenance work against our
   sorting library code in the series "lib/sort: Optimizations and
   cleanups".

 - More library maintainance work from Christophe Jaillet in the series
   "Remove usage of the deprecated ida_simple_xx() API".

 - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the
   series "nilfs2: eliminate the call to inode_attach_wb()".

 - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix
   GDB command error".

 - Plus the usual shower of singleton patches all over the place. Please
   see the relevant changelogs for details.

* tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (98 commits)
  ia64: scrub ia64 from poison.h
  watchdog/perf: properly initialize the turbo mode timestamp and rearm counter
  tsacct: replace strncpy() with strscpy()
  lib/bch.c: use swap() to improve code
  test_bpf: convert comma to semicolon
  init/modpost: conditionally check section mismatch to __meminit*
  init: remove unused __MEMINIT* macros
  nilfs2: Constify struct kobj_type
  nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro
  math: rational: add missing MODULE_DESCRIPTION() macro
  lib/zlib: add missing MODULE_DESCRIPTION() macro
  fs: ufs: add MODULE_DESCRIPTION()
  lib/rbtree.c: fix the example typo
  ocfs2: add bounds checking to ocfs2_check_dir_entry()
  fs: add kernel-doc comments to ocfs2_prepare_orphan_dir()
  coredump: simplify zap_process()
  selftests/fpu: add missing MODULE_DESCRIPTION() macro
  compiler.h: simplify data_race() macro
  build-id: require program headers to be right after ELF header
  resource: add missing MODULE_DESCRIPTION()
  ...
2024-07-21 17:56:22 -07:00
Linus Torvalds
fbc90c042c - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression
   (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff).
   Yu has a fix which I'll send along later via the hotfixes branch.
 
 - In the series "mm: Avoid possible overflows in dirty throttling" Jan
   Kara addresses a couple of issues in the writeback throttling code.
   These fixes are also targetted at -stable kernels.
 
 - Ryusuke Konishi's series "nilfs2: fix potential issues related to
   reserved inodes" does that.  This should actually be in the
   mm-nonmm-stable tree, along with the many other nilfs2 patches.  My bad.
 
 - More folio conversions from Kefeng Wang in the series "mm: convert to
   folio_alloc_mpol()"
 
 - Kemeng Shi has sent some cleanups to the writeback code in the series
   "Add helper functions to remove repeated code and improve readability of
   cgroup writeback"
 
 - Kairui Song has made the swap code a little smaller and a little
   faster in the series "mm/swap: clean up and optimize swap cache index".
 
 - In the series "mm/memory: cleanly support zeropage in
   vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David
   Hildenbrand has reworked the rather sketchy handling of the use of the
   zeropage in MAP_SHARED mappings.  I don't see any runtime effects here -
   more a cleanup/understandability/maintainablity thing.
 
 - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of
   higher addresses, for aarch64.  The (poorly named) series is
   "Restructure va_high_addr_switch".
 
 - The core TLB handling code gets some cleanups and possible slight
   optimizations in Bang Li's series "Add update_mmu_tlb_range() to
   simplify code".
 
 - Jane Chu has improved the handling of our
   fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the
   series "Enhance soft hwpoison handling and injection".
 
 - Jeff Johnson has sent a billion patches everywhere to add
   MODULE_DESCRIPTION() to everything.  Some landed in this pull.
 
 - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has
   simplified migration's use of hardware-offload memory copying.
 
 - Yosry Ahmed performs more folio API conversions in his series "mm:
   zswap: trivial folio conversions".
 
 - In the series "large folios swap-in: handle refault cases first",
   Chuanhua Han inches us forward in the handling of large pages in the
   swap code.  This is a cleanup and optimization, working toward the end
   objective of full support of large folio swapin/out.
 
 - In the series "mm,swap: cleanup VMA based swap readahead window
   calculation", Huang Ying has contributed some cleanups and a possible
   fixlet to his VMA based swap readahead code.
 
 - In the series "add mTHP support for anonymous shmem" Baolin Wang has
   taught anonymous shmem mappings to use multisize THP.  By default this
   is a no-op - users must opt in vis sysfs controls.  Dramatic
   improvements in pagefault latency are realized.
 
 - David Hildenbrand has some cleanups to our remaining use of
   page_mapcount() in the series "fs/proc: move page_mapcount() to
   fs/proc/internal.h".
 
 - David also has some highmem accounting cleanups in the series
   "mm/highmem: don't track highmem pages manually".
 
 - Build-time fixes and cleanups from John Hubbard in the series
   "cleanups, fixes, and progress towards avoiding "make headers"".
 
 - Cleanups and consolidation of the core pagemap handling from Barry
   Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers
   and utilize them".
 
 - Lance Yang's series "Reclaim lazyfree THP without splitting" has
   reduced the latency of the reclaim of pmd-mapped THPs under fairly
   common circumstances.  A 10x speedup is seen in a microbenchmark.
 
   It does this by punting to aother CPU but I guess that's a win unless
   all CPUs are pegged.
 
 - hugetlb_cgroup cleanups from Xiu Jianfeng in the series
   "mm/hugetlb_cgroup: rework on cftypes".
 
 - Miaohe Lin's series "Some cleanups for memory-failure" does just that
   thing.
 
 - Is anyone reading this stuff?  If so, email me!
 
 - Someone other than SeongJae has developed a DAMON feature in Honggyu
   Kim's series "DAMON based tiered memory management for CXL memory".
   This adds DAMON features which may be used to help determine the
   efficiency of our placement of CXL/PCIe attached DRAM.
 
 - DAMON user API centralization and simplificatio work in SeongJae
   Park's series "mm/damon: introduce DAMON parameters online commit
   function".
 
 - In the series "mm: page_type, zsmalloc and page_mapcount_reset()"
   David Hildenbrand does some maintenance work on zsmalloc - partially
   modernizing its use of pageframe fields.
 
 - Kefeng Wang provides more folio conversions in the series "mm: remove
   page_maybe_dma_pinned() and page_mkclean()".
 
 - More cleanup from David Hildenbrand, this time in the series
   "mm/memory_hotplug: use PageOffline() instead of PageReserved() for
   !ZONE_DEVICE".  It "enlightens memory hotplug more about PageOffline()
   pages" and permits the removal of some virtio-mem hacks.
 
 - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and
   __folio_add_anon_rmap()" is a cleanup to the anon folio handling in
   preparation for mTHP (multisize THP) swapin.
 
 - Kefeng Wang's series "mm: improve clear and copy user folio"
   implements more folio conversions, this time in the area of large folio
   userspace copying.
 
 - The series "Docs/mm/damon/maintaier-profile: document a mailing tool
   and community meetup series" tells people how to get better involved
   with other DAMON developers.  From SeongJae Park.
 
 - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does
   that.
 
 - David Hildenbrand sends along more cleanups, this time against the
   migration code.  The series is "mm/migrate: move NUMA hinting fault
   folio isolation + checks under PTL".
 
 - Jan Kara has found quite a lot of strangenesses and minor errors in
   the readahead code.  He addresses this in the series "mm: Fix various
   readahead quirks".
 
 - SeongJae Park's series "selftests/damon: test DAMOS tried regions and
   {min,max}_nr_regions" adds features and addresses errors in DAMON's self
   testing code.
 
 - Gavin Shan has found a userspace-triggerable WARN in the pagecache
   code.  The series "mm/filemap: Limit page cache size to that supported
   by xarray" addresses this.  The series is marked cc:stable.
 
 - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations
   and cleanup" cleans up and slightly optimizes KSM.
 
 - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of
   code motion.  The series (which also makes the memcg-v1 code
   Kconfigurable) are
 
   "mm: memcg: separate legacy cgroup v1 code and put under config
   option" and
   "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1"
 
 - Dan Schatzberg's series "Add swappiness argument to memory.reclaim"
   adds an additional feature to this cgroup-v2 control file.
 
 - The series "Userspace controls soft-offline pages" from Jiaqi Yan
   permits userspace to stop the kernel's automatic treatment of excessive
   correctable memory errors.  In order to permit userspace to monitor and
   handle this situation.
 
 - Kefeng Wang's series "mm: migrate: support poison recover from migrate
   folio" teaches the kernel to appropriately handle migration from
   poisoned source folios rather than simply panicing.
 
 - SeongJae Park's series "Docs/damon: minor fixups and improvements"
   does those things.
 
 - In the series "mm/zsmalloc: change back to per-size_class lock"
   Chengming Zhou improves zsmalloc's scalability and memory utilization.
 
 - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for
   pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare
   refcount increments.  So these paes can first be moved aside if they
   reside in the movable zone or a CMA block.
 
 - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps
   for much faster reading of vma information.  The series is "query VMAs
   from /proc/<pid>/maps".
 
 - In the series "mm: introduce per-order mTHP split counters" Lance Yang
   improves the kernel's presentation of developer information related to
   multisize THP splitting.
 
 - Michael Ellerman has developed the series "Reimplement huge pages
   without hugepd on powerpc (8xx, e500, book3s/64)".  This permits
   userspace to use all available huge page sizes.
 
 - In the series "revert unconditional slab and page allocator fault
   injection calls" Vlastimil Babka removes a performance-affecting and not
   very useful feature from slab fault injection.
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Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - In the series "mm: Avoid possible overflows in dirty throttling" Jan
   Kara addresses a couple of issues in the writeback throttling code.
   These fixes are also targetted at -stable kernels.

 - Ryusuke Konishi's series "nilfs2: fix potential issues related to
   reserved inodes" does that. This should actually be in the
   mm-nonmm-stable tree, along with the many other nilfs2 patches. My
   bad.

 - More folio conversions from Kefeng Wang in the series "mm: convert to
   folio_alloc_mpol()"

 - Kemeng Shi has sent some cleanups to the writeback code in the series
   "Add helper functions to remove repeated code and improve readability
   of cgroup writeback"

 - Kairui Song has made the swap code a little smaller and a little
   faster in the series "mm/swap: clean up and optimize swap cache
   index".

 - In the series "mm/memory: cleanly support zeropage in
   vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David
   Hildenbrand has reworked the rather sketchy handling of the use of
   the zeropage in MAP_SHARED mappings. I don't see any runtime effects
   here - more a cleanup/understandability/maintainablity thing.

 - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling
   of higher addresses, for aarch64. The (poorly named) series is
   "Restructure va_high_addr_switch".

 - The core TLB handling code gets some cleanups and possible slight
   optimizations in Bang Li's series "Add update_mmu_tlb_range() to
   simplify code".

 - Jane Chu has improved the handling of our
   fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in
   the series "Enhance soft hwpoison handling and injection".

 - Jeff Johnson has sent a billion patches everywhere to add
   MODULE_DESCRIPTION() to everything. Some landed in this pull.

 - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang
   has simplified migration's use of hardware-offload memory copying.

 - Yosry Ahmed performs more folio API conversions in his series "mm:
   zswap: trivial folio conversions".

 - In the series "large folios swap-in: handle refault cases first",
   Chuanhua Han inches us forward in the handling of large pages in the
   swap code. This is a cleanup and optimization, working toward the end
   objective of full support of large folio swapin/out.

 - In the series "mm,swap: cleanup VMA based swap readahead window
   calculation", Huang Ying has contributed some cleanups and a possible
   fixlet to his VMA based swap readahead code.

 - In the series "add mTHP support for anonymous shmem" Baolin Wang has
   taught anonymous shmem mappings to use multisize THP. By default this
   is a no-op - users must opt in vis sysfs controls. Dramatic
   improvements in pagefault latency are realized.

 - David Hildenbrand has some cleanups to our remaining use of
   page_mapcount() in the series "fs/proc: move page_mapcount() to
   fs/proc/internal.h".

 - David also has some highmem accounting cleanups in the series
   "mm/highmem: don't track highmem pages manually".

 - Build-time fixes and cleanups from John Hubbard in the series
   "cleanups, fixes, and progress towards avoiding "make headers"".

 - Cleanups and consolidation of the core pagemap handling from Barry
   Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers
   and utilize them".

 - Lance Yang's series "Reclaim lazyfree THP without splitting" has
   reduced the latency of the reclaim of pmd-mapped THPs under fairly
   common circumstances. A 10x speedup is seen in a microbenchmark.

   It does this by punting to aother CPU but I guess that's a win unless
   all CPUs are pegged.

 - hugetlb_cgroup cleanups from Xiu Jianfeng in the series
   "mm/hugetlb_cgroup: rework on cftypes".

 - Miaohe Lin's series "Some cleanups for memory-failure" does just that
   thing.

 - Someone other than SeongJae has developed a DAMON feature in Honggyu
   Kim's series "DAMON based tiered memory management for CXL memory".
   This adds DAMON features which may be used to help determine the
   efficiency of our placement of CXL/PCIe attached DRAM.

 - DAMON user API centralization and simplificatio work in SeongJae
   Park's series "mm/damon: introduce DAMON parameters online commit
   function".

 - In the series "mm: page_type, zsmalloc and page_mapcount_reset()"
   David Hildenbrand does some maintenance work on zsmalloc - partially
   modernizing its use of pageframe fields.

 - Kefeng Wang provides more folio conversions in the series "mm: remove
   page_maybe_dma_pinned() and page_mkclean()".

 - More cleanup from David Hildenbrand, this time in the series
   "mm/memory_hotplug: use PageOffline() instead of PageReserved() for
   !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline()
   pages" and permits the removal of some virtio-mem hacks.

 - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and
   __folio_add_anon_rmap()" is a cleanup to the anon folio handling in
   preparation for mTHP (multisize THP) swapin.

 - Kefeng Wang's series "mm: improve clear and copy user folio"
   implements more folio conversions, this time in the area of large
   folio userspace copying.

 - The series "Docs/mm/damon/maintaier-profile: document a mailing tool
   and community meetup series" tells people how to get better involved
   with other DAMON developers. From SeongJae Park.

 - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does
   that.

 - David Hildenbrand sends along more cleanups, this time against the
   migration code. The series is "mm/migrate: move NUMA hinting fault
   folio isolation + checks under PTL".

 - Jan Kara has found quite a lot of strangenesses and minor errors in
   the readahead code. He addresses this in the series "mm: Fix various
   readahead quirks".

 - SeongJae Park's series "selftests/damon: test DAMOS tried regions and
   {min,max}_nr_regions" adds features and addresses errors in DAMON's
   self testing code.

 - Gavin Shan has found a userspace-triggerable WARN in the pagecache
   code. The series "mm/filemap: Limit page cache size to that supported
   by xarray" addresses this. The series is marked cc:stable.

 - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations
   and cleanup" cleans up and slightly optimizes KSM.

 - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of
   code motion. The series (which also makes the memcg-v1 code
   Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put
   under config option" and "mm: memcg: put cgroup v1-specific memcg
   data under CONFIG_MEMCG_V1"

 - Dan Schatzberg's series "Add swappiness argument to memory.reclaim"
   adds an additional feature to this cgroup-v2 control file.

 - The series "Userspace controls soft-offline pages" from Jiaqi Yan
   permits userspace to stop the kernel's automatic treatment of
   excessive correctable memory errors. In order to permit userspace to
   monitor and handle this situation.

 - Kefeng Wang's series "mm: migrate: support poison recover from
   migrate folio" teaches the kernel to appropriately handle migration
   from poisoned source folios rather than simply panicing.

 - SeongJae Park's series "Docs/damon: minor fixups and improvements"
   does those things.

 - In the series "mm/zsmalloc: change back to per-size_class lock"
   Chengming Zhou improves zsmalloc's scalability and memory
   utilization.

 - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for
   pinning memfd folios" makes the GUP code use FOLL_PIN rather than
   bare refcount increments. So these paes can first be moved aside if
   they reside in the movable zone or a CMA block.

 - Andrii Nakryiko has added a binary ioctl()-based API to
   /proc/pid/maps for much faster reading of vma information. The series
   is "query VMAs from /proc/<pid>/maps".

 - In the series "mm: introduce per-order mTHP split counters" Lance
   Yang improves the kernel's presentation of developer information
   related to multisize THP splitting.

 - Michael Ellerman has developed the series "Reimplement huge pages
   without hugepd on powerpc (8xx, e500, book3s/64)". This permits
   userspace to use all available huge page sizes.

 - In the series "revert unconditional slab and page allocator fault
   injection calls" Vlastimil Babka removes a performance-affecting and
   not very useful feature from slab fault injection.

* tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits)
  mm/mglru: fix ineffective protection calculation
  mm/zswap: fix a white space issue
  mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio
  mm/hugetlb: fix possible recursive locking detected warning
  mm/gup: clear the LRU flag of a page before adding to LRU batch
  mm/numa_balancing: teach mpol_to_str about the balancing mode
  mm: memcg1: convert charge move flags to unsigned long long
  alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting
  lib: reuse page_ext_data() to obtain codetag_ref
  lib: add missing newline character in the warning message
  mm/mglru: fix overshooting shrinker memory
  mm/mglru: fix div-by-zero in vmpressure_calc_level()
  mm/kmemleak: replace strncpy() with strscpy()
  mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC
  mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB
  mm: ignore data-race in __swap_writepage
  hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr
  mm: shmem: rename mTHP shmem counters
  mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async()
  mm/migrate: putback split folios when numa hint migration fails
  ...
2024-07-21 17:15:46 -07:00
Linus Torvalds
7846b618e0 RTC for 6.11
Subsystem:
  - add missing MODULE_DESCRIPTION() macro
  - fix offset addition for alarms
 
 Drivers:
  - isl1208: alarm clearing fixes
  - mcp794xx: oscillator failure detection
  - stm32: stm32mp25 support
  - tps6594: power management support
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Merge tag 'rtc-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Subsystem:
   - add missing MODULE_DESCRIPTION() macro
   - fix offset addition for alarms

  Drivers:
   - isl1208: alarm clearing fixes
   - mcp794xx: oscillator failure detection
   - stm32: stm32mp25 support
   - tps6594: power management support"

* tag 'rtc-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: stm32: add new st,stm32mp25-rtc compatible and check RIF configuration
  dt-bindings: rtc: stm32: introduce new st,stm32mp25-rtc compatible
  rtc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
  rtc: interface: Add RTC offset to alarm after fix-up
  rtc: ds1307: Clamp year to valid BCD (0-99) in `set_time()`
  rtc: ds1307: Detect oscillator fail on mcp794xx
  rtc: isl1208: Update correct procedure for clearing alarm
  rtc: isl1208: Add a delay for clearing alarm
  dt-bindings: rtc: Convert rtc-fsl-ftm-alarm.txt to yaml format
  rtc: add missing MODULE_DESCRIPTION() macro
  rtc: abx80x: Fix return value of nvmem callback on read
  rtc: cmos: Fix return value of nvmem callbacks
  rtc: isl1208: Fix return value of nvmem callbacks
  rtc: tps6594: Add power management support
  rtc: tps6594: introduce private structure as drvdata
  rtc: tps6594: Fix memleak in probe
2024-07-21 15:34:10 -07:00
Linus Torvalds
33c9de2960 six smb3 client fixes, most for stable including important netfs fixes
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Merge tag '6.11-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:
 "Six smb3 client fixes, most for stable including important netfs fixes:

   - various netfs related fixes for cifs addressing some regressions in
     6.10 (e.g. generic/708 and some multichannel crediting related
     issues)

   - fix for a noisy log message on copy_file_range

   - add trace point for read/write credits"

* tag '6.11-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix missing fscache invalidation
  cifs: Add a tracepoint to track credits involved in R/W requests
  cifs: Fix setting of zero_point after DIO write
  cifs: Fix missing error code set
  cifs: Fix server re-repick on subrequest retry
  cifs: fix noisy message on copy_file_range
2024-07-21 15:23:39 -07:00
Linus Torvalds
8e313211f7 Pin control bulk changes for the v6.11 kernel series:
Core changes: None.
 
 New drivers:
 
 - Renesas RZ/V2H(P) SoC
 
 - NXP Freescale i.MX91 SoC
 
 - Nuvoton MA35D1 SoC
 
 - Qualcomm PMC8380, SM4250, SM4250 LPI
 
 Enhancements:
 
 - A slew of scoped-based simplifications of of_node_put().
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Merge tag 'pinctrl-v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "Some new drivers is the main part, the rest is cleanups and nonurgent
  fixes.

  Nothing much special about this, no core changes this time.

  New drivers:

   - Renesas RZ/V2H(P) SoC

   - NXP Freescale i.MX91 SoC

   - Nuvoton MA35D1 SoC

   - Qualcomm PMC8380, SM4250, SM4250 LPI

  Enhancements:

   - A slew of scoped-based simplifications of of_node_put()"

* tag 'pinctrl-v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (110 commits)
  pinctrl: renesas: rzg2l: Support output enable on RZ/G2L
  pinctrl: renesas: rzg2l: Clean up and refactor OEN read/write functions
  pinctrl: renesas: rzg2l: Clarify OEN read/write support
  dt-bindings: pinctrl: pinctrl-single: Fix pinctrl-single,gpio-range description
  dt-bindings: pinctrl: npcm8xx: add missing pin group and mux function
  dt-bindings: pinctrl: pinctrl-single: fix schmitt related properties
  pinctrl: freescale: Use scope based of_node_put() cleanups
  pinctrl: equilibrium: Use scope based of_node_put() cleanups
  pinctrl: ti: iodelay: Use scope based of_node_put() cleanups
  pinctrl: qcom: lpass-lpi: increase MAX_NR_GPIO to 32
  pinctrl: cy8c95x0: Update cache modification
  pinctrl: cy8c95x0: Use cleanup.h
  pinctrl: renesas: r8a779h0: Remove unneeded separators
  pinctrl: renesas: r8a779g0: Add INTC-EX pins, groups, and function
  pinctrl: renesas: r8a779g0: Remove unneeded separators
  pinctrl: renesas: r8a779h0: Add AVB MII pins and groups
  pinctrl: renesas: r8a779g0: Fix TPU suffixes
  pinctrl: renesas: r8a779g0: Fix TCLK suffixes
  pinctrl: renesas: r8a779g0: FIX PWM suffixes
  pinctrl: renesas: r8a779g0: Fix IRQ suffixes
  ...
2024-07-21 10:25:59 -07:00
Linus Torvalds
2c9b351240 ARM:
* Initial infrastructure for shadow stage-2 MMUs, as part of nested
   virtualization enablement
 
 * Support for userspace changes to the guest CTR_EL0 value, enabling
   (in part) migration of VMs between heterogenous hardware
 
 * Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1 of
   the protocol
 
 * FPSIMD/SVE support for nested, including merged trap configuration
   and exception routing
 
 * New command-line parameter to control the WFx trap behavior under KVM
 
 * Introduce kCFI hardening in the EL2 hypervisor
 
 * Fixes + cleanups for handling presence/absence of FEAT_TCRX
 
 * Miscellaneous fixes + documentation updates
 
 LoongArch:
 
 * Add paravirt steal time support.
 
 * Add support for KVM_DIRTY_LOG_INITIALLY_SET.
 
 * Add perf kvm-stat support for loongarch.
 
 RISC-V:
 
 * Redirect AMO load/store access fault traps to guest
 
 * perf kvm stat support
 
 * Use guest files for IMSIC virtualization, when available
 
 ONE_REG support for the Zimop, Zcmop, Zca, Zcf, Zcd, Zcb and Zawrs ISA
 extensions is coming through the RISC-V tree.
 
 s390:
 
 * Assortment of tiny fixes which are not time critical
 
 x86:
 
 * Fixes for Xen emulation.
 
 * Add a global struct to consolidate tracking of host values, e.g. EFER
 
 * Add KVM_CAP_X86_APIC_BUS_CYCLES_NS to allow configuring the effective APIC
   bus frequency, because TDX.
 
 * Print the name of the APICv/AVIC inhibits in the relevant tracepoint.
 
 * Clean up KVM's handling of vendor specific emulation to consistently act on
   "compatible with Intel/AMD", versus checking for a specific vendor.
 
 * Drop MTRR virtualization, and instead always honor guest PAT on CPUs
   that support self-snoop.
 
 * Update to the newfangled Intel CPU FMS infrastructure.
 
 * Don't advertise IA32_PERF_GLOBAL_OVF_CTRL as an MSR-to-be-saved, as it reads
   '0' and writes from userspace are ignored.
 
 * Misc cleanups
 
 x86 - MMU:
 
 * Small cleanups, renames and refactoring extracted from the upcoming
   Intel TDX support.
 
 * Don't allocate kvm_mmu_page.shadowed_translation for shadow pages that can't
   hold leafs SPTEs.
 
 * Unconditionally drop mmu_lock when allocating TDP MMU page tables for eager
   page splitting, to avoid stalling vCPUs when splitting huge pages.
 
 * Bug the VM instead of simply warning if KVM tries to split a SPTE that is
   non-present or not-huge.  KVM is guaranteed to end up in a broken state
   because the callers fully expect a valid SPTE, it's all but dangerous
   to let more MMU changes happen afterwards.
 
 x86 - AMD:
 
 * Make per-CPU save_area allocations NUMA-aware.
 
 * Force sev_es_host_save_area() to be inlined to avoid calling into an
   instrumentable function from noinstr code.
 
 * Base support for running SEV-SNP guests.  API-wise, this includes
   a new KVM_X86_SNP_VM type, encrypting/measure the initial image into
   guest memory, and finalizing it before launching it.  Internally,
   there are some gmem/mmu hooks needed to prepare gmem-allocated pages
   before mapping them into guest private memory ranges.
 
   This includes basic support for attestation guest requests, enough to
   say that KVM supports the GHCB 2.0 specification.
 
   There is no support yet for loading into the firmware those signing
   keys to be used for attestation requests, and therefore no need yet
   for the host to provide certificate data for those keys.  To support
   fetching certificate data from userspace, a new KVM exit type will be
   needed to handle fetching the certificate from userspace. An attempt to
   define a new KVM_EXIT_COCO/KVM_EXIT_COCO_REQ_CERTS exit type to handle
   this was introduced in v1 of this patchset, but is still being discussed
   by community, so for now this patchset only implements a stub version
   of SNP Extended Guest Requests that does not provide certificate data.
 
 x86 - Intel:
 
 * Remove an unnecessary EPT TLB flush when enabling hardware.
 
 * Fix a series of bugs that cause KVM to fail to detect nested pending posted
   interrupts as valid wake eents for a vCPU executing HLT in L2 (with
   HLT-exiting disable by L1).
 
 * KVM: x86: Suppress MMIO that is triggered during task switch emulation
 
   Explicitly suppress userspace emulated MMIO exits that are triggered when
   emulating a task switch as KVM doesn't support userspace MMIO during
   complex (multi-step) emulation.  Silently ignoring the exit request can
   result in the WARN_ON_ONCE(vcpu->mmio_needed) firing if KVM exits to
   userspace for some other reason prior to purging mmio_needed.
 
   See commit 0dc902267c ("KVM: x86: Suppress pending MMIO write exits if
   emulator detects exception") for more details on KVM's limitations with
   respect to emulated MMIO during complex emulator flows.
 
 Generic:
 
 * Rename the AS_UNMOVABLE flag that was introduced for KVM to AS_INACCESSIBLE,
   because the special casing needed by these pages is not due to just
   unmovability (and in fact they are only unmovable because the CPU cannot
   access them).
 
 * New ioctl to populate the KVM page tables in advance, which is useful to
   mitigate KVM page faults during guest boot or after live migration.
   The code will also be used by TDX, but (probably) not through the ioctl.
 
 * Enable halt poll shrinking by default, as Intel found it to be a clear win.
 
 * Setup empty IRQ routing when creating a VM to avoid having to synchronize
   SRCU when creating a split IRQCHIP on x86.
 
 * Rework the sched_in/out() paths to replace kvm_arch_sched_in() with a flag
   that arch code can use for hooking both sched_in() and sched_out().
 
 * Take the vCPU @id as an "unsigned long" instead of "u32" to avoid
   truncating a bogus value from userspace, e.g. to help userspace detect bugs.
 
 * Mark a vCPU as preempted if and only if it's scheduled out while in the
   KVM_RUN loop, e.g. to avoid marking it preempted and thus writing guest
   memory when retrieving guest state during live migration blackout.
 
 Selftests:
 
 * Remove dead code in the memslot modification stress test.
 
 * Treat "branch instructions retired" as supported on all AMD Family 17h+ CPUs.
 
 * Print the guest pseudo-RNG seed only when it changes, to avoid spamming the
   log for tests that create lots of VMs.
 
 * Make the PMU counters test less flaky when counting LLC cache misses by
   doing CLFLUSH{OPT} in every loop iteration.
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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:

   - Initial infrastructure for shadow stage-2 MMUs, as part of nested
     virtualization enablement

   - Support for userspace changes to the guest CTR_EL0 value, enabling
     (in part) migration of VMs between heterogenous hardware

   - Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1
     of the protocol

   - FPSIMD/SVE support for nested, including merged trap configuration
     and exception routing

   - New command-line parameter to control the WFx trap behavior under
     KVM

   - Introduce kCFI hardening in the EL2 hypervisor

   - Fixes + cleanups for handling presence/absence of FEAT_TCRX

   - Miscellaneous fixes + documentation updates

  LoongArch:

   - Add paravirt steal time support

   - Add support for KVM_DIRTY_LOG_INITIALLY_SET

   - Add perf kvm-stat support for loongarch

  RISC-V:

   - Redirect AMO load/store access fault traps to guest

   - perf kvm stat support

   - Use guest files for IMSIC virtualization, when available

  s390:

   - Assortment of tiny fixes which are not time critical

  x86:

   - Fixes for Xen emulation

   - Add a global struct to consolidate tracking of host values, e.g.
     EFER

   - Add KVM_CAP_X86_APIC_BUS_CYCLES_NS to allow configuring the
     effective APIC bus frequency, because TDX

   - Print the name of the APICv/AVIC inhibits in the relevant
     tracepoint

   - Clean up KVM's handling of vendor specific emulation to
     consistently act on "compatible with Intel/AMD", versus checking
     for a specific vendor

   - Drop MTRR virtualization, and instead always honor guest PAT on
     CPUs that support self-snoop

   - Update to the newfangled Intel CPU FMS infrastructure

   - Don't advertise IA32_PERF_GLOBAL_OVF_CTRL as an MSR-to-be-saved, as
     it reads '0' and writes from userspace are ignored

   - Misc cleanups

  x86 - MMU:

   - Small cleanups, renames and refactoring extracted from the upcoming
     Intel TDX support

   - Don't allocate kvm_mmu_page.shadowed_translation for shadow pages
     that can't hold leafs SPTEs

   - Unconditionally drop mmu_lock when allocating TDP MMU page tables
     for eager page splitting, to avoid stalling vCPUs when splitting
     huge pages

   - Bug the VM instead of simply warning if KVM tries to split a SPTE
     that is non-present or not-huge. KVM is guaranteed to end up in a
     broken state because the callers fully expect a valid SPTE, it's
     all but dangerous to let more MMU changes happen afterwards

  x86 - AMD:

   - Make per-CPU save_area allocations NUMA-aware

   - Force sev_es_host_save_area() to be inlined to avoid calling into
     an instrumentable function from noinstr code

   - Base support for running SEV-SNP guests. API-wise, this includes a
     new KVM_X86_SNP_VM type, encrypting/measure the initial image into
     guest memory, and finalizing it before launching it. Internally,
     there are some gmem/mmu hooks needed to prepare gmem-allocated
     pages before mapping them into guest private memory ranges

     This includes basic support for attestation guest requests, enough
     to say that KVM supports the GHCB 2.0 specification

     There is no support yet for loading into the firmware those signing
     keys to be used for attestation requests, and therefore no need yet
     for the host to provide certificate data for those keys.

     To support fetching certificate data from userspace, a new KVM exit
     type will be needed to handle fetching the certificate from
     userspace.

     An attempt to define a new KVM_EXIT_COCO / KVM_EXIT_COCO_REQ_CERTS
     exit type to handle this was introduced in v1 of this patchset, but
     is still being discussed by community, so for now this patchset
     only implements a stub version of SNP Extended Guest Requests that
     does not provide certificate data

  x86 - Intel:

   - Remove an unnecessary EPT TLB flush when enabling hardware

   - Fix a series of bugs that cause KVM to fail to detect nested
     pending posted interrupts as valid wake eents for a vCPU executing
     HLT in L2 (with HLT-exiting disable by L1)

   - KVM: x86: Suppress MMIO that is triggered during task switch
     emulation

     Explicitly suppress userspace emulated MMIO exits that are
     triggered when emulating a task switch as KVM doesn't support
     userspace MMIO during complex (multi-step) emulation

     Silently ignoring the exit request can result in the
     WARN_ON_ONCE(vcpu->mmio_needed) firing if KVM exits to userspace
     for some other reason prior to purging mmio_needed

     See commit 0dc902267c ("KVM: x86: Suppress pending MMIO write
     exits if emulator detects exception") for more details on KVM's
     limitations with respect to emulated MMIO during complex emulator
     flows

  Generic:

   - Rename the AS_UNMOVABLE flag that was introduced for KVM to
     AS_INACCESSIBLE, because the special casing needed by these pages
     is not due to just unmovability (and in fact they are only
     unmovable because the CPU cannot access them)

   - New ioctl to populate the KVM page tables in advance, which is
     useful to mitigate KVM page faults during guest boot or after live
     migration. The code will also be used by TDX, but (probably) not
     through the ioctl

   - Enable halt poll shrinking by default, as Intel found it to be a
     clear win

   - Setup empty IRQ routing when creating a VM to avoid having to
     synchronize SRCU when creating a split IRQCHIP on x86

   - Rework the sched_in/out() paths to replace kvm_arch_sched_in() with
     a flag that arch code can use for hooking both sched_in() and
     sched_out()

   - Take the vCPU @id as an "unsigned long" instead of "u32" to avoid
     truncating a bogus value from userspace, e.g. to help userspace
     detect bugs

   - Mark a vCPU as preempted if and only if it's scheduled out while in
     the KVM_RUN loop, e.g. to avoid marking it preempted and thus
     writing guest memory when retrieving guest state during live
     migration blackout

  Selftests:

   - Remove dead code in the memslot modification stress test

   - Treat "branch instructions retired" as supported on all AMD Family
     17h+ CPUs

   - Print the guest pseudo-RNG seed only when it changes, to avoid
     spamming the log for tests that create lots of VMs

   - Make the PMU counters test less flaky when counting LLC cache
     misses by doing CLFLUSH{OPT} in every loop iteration"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
  crypto: ccp: Add the SNP_VLEK_LOAD command
  KVM: x86/pmu: Add kvm_pmu_call() to simplify static calls of kvm_pmu_ops
  KVM: x86: Introduce kvm_x86_call() to simplify static calls of kvm_x86_ops
  KVM: x86: Replace static_call_cond() with static_call()
  KVM: SEV: Provide support for SNP_EXTENDED_GUEST_REQUEST NAE event
  x86/sev: Move sev_guest.h into common SEV header
  KVM: SEV: Provide support for SNP_GUEST_REQUEST NAE event
  KVM: x86: Suppress MMIO that is triggered during task switch emulation
  KVM: x86/mmu: Clean up make_huge_page_split_spte() definition and intro
  KVM: x86/mmu: Bug the VM if KVM tries to split a !hugepage SPTE
  KVM: selftests: x86: Add test for KVM_PRE_FAULT_MEMORY
  KVM: x86: Implement kvm_arch_vcpu_pre_fault_memory()
  KVM: x86/mmu: Make kvm_mmu_do_page_fault() return mapped level
  KVM: x86/mmu: Account pf_{fixed,emulate,spurious} in callers of "do page fault"
  KVM: x86/mmu: Bump pf_taken stat only in the "real" page fault handler
  KVM: Add KVM_PRE_FAULT_MEMORY vcpu ioctl to pre-populate guest memory
  KVM: Document KVM_PRE_FAULT_MEMORY ioctl
  mm, virt: merge AS_UNMOVABLE and AS_INACCESSIBLE
  perf kvm: Add kvm-stat for loongarch64
  LoongArch: KVM: Add PV steal time support in guest side
  ...
2024-07-20 12:41:03 -07:00