Correct function kernel-doc notation to prevent warnings from
scripts/kernel-doc.

xenbus_client.c:134: warning: No description found for return value of 'xenbus_watch_path'
xenbus_client.c:177: warning: No description found for return value of 'xenbus_watch_pathfmt'
xenbus_client.c:258: warning: missing initial short description on line:
 * xenbus_switch_state
xenbus_client.c:267: warning: No description found for return value of 'xenbus_switch_state'
xenbus_client.c:308: warning: missing initial short description on line:
 * xenbus_dev_error
xenbus_client.c:327: warning: missing initial short description on line:
 * xenbus_dev_fatal
xenbus_client.c:350: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Equivalent to xenbus_dev_fatal(dev, err, fmt, args), but helps
xenbus_client.c:457: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * Allocate an event channel for the given xenbus_device, assigning the newly
xenbus_client.c:486: warning: expecting prototype for Free an existing event channel. Returns 0 on success or(). Prototype was for xenbus_free_evtchn() instead
xenbus_client.c:502: warning: missing initial short description on line:
 * xenbus_map_ring_valloc
xenbus_client.c:517: warning: No description found for return value of 'xenbus_map_ring_valloc'
xenbus_client.c:602: warning: missing initial short description on line:
 * xenbus_unmap_ring
xenbus_client.c:614: warning: No description found for return value of 'xenbus_unmap_ring'
xenbus_client.c:715: warning: missing initial short description on line:
 * xenbus_unmap_ring_vfree
xenbus_client.c:727: warning: No description found for return value of 'xenbus_unmap_ring_vfree'
xenbus_client.c:919: warning: missing initial short description on line:
 * xenbus_read_driver_state
xenbus_client.c:926: warning: No description found for return value of 'xenbus_read_driver_state'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Cc: xen-devel@lists.xenproject.org
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20231206181724.27767-1-rdunlap@infradead.orgSigned-off-by: Juergen Gross <jgross@suse.com>

Update the Xen PV-device interface headers in order to avoid undefined
behavior with flexible arrays being defined with one array element.
Reported-by: Pry Mar <pryorm09@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20231205115121.11627-1-jgross@suse.comSigned-off-by: Juergen Gross <jgross@suse.com>

Pull i2c fixes from Wolfram Sang:
 "Improve the detection when to run atomic transfer handlers for kernels
  with preemption disabled. This removes some false positive splats a
  number of users were seeing if their driver didn't have support for
  atomic transfers.

  Also, fix a typo in the docs while we are here"

* tag 'i2c-for-6.7-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: core: Fix atomic xfer check for non-preempt config
  Documentation/i2c: fix spelling error in i2c-address-translators

Since commit aa49c908 ("i2c: core: Run atomic i2c xfer when
!preemptible"), the whole reboot/power off sequence on non-preempt kernels
is using atomic i2c xfer, as !preemptible() always results to 1.

During device_shutdown(), the i2c might be used a lot and not all busses
have implemented an atomic xfer handler. This results in a lot of
avoidable noise, like:

[   12.687169] No atomic I2C transfer handler for 'i2c-0'
[   12.692313] WARNING: CPU: 6 PID: 275 at drivers/i2c/i2c-core.h:40 i2c_smbus_xfer+0x100/0x118
...

Fix this by allowing non-atomic xfer when the interrupts are enabled, as
it was before.

Link: https://lore.kernel.org/r/20231222230106.73f030a5@yea
Link: https://lore.kernel.org/r/20240102150350.3180741-1-mwalle@kernel.org
Link: https://lore.kernel.org/linux-i2c/13271b9b-4132-46ef-abf8-2c311967bb46@mailbox.org/
Fixes: aa49c908 ("i2c: core: Run atomic i2c xfer when !preemptible")
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Tested-by: Michael Walle <mwalle@kernel.org>
Tested-by: Tor Vic <torvic9@mailbox.org>
[wsa: removed a comment which needs more work, code is ok]
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Merge tag 'mm-hotfixes-stable-2024-01-05-11-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc mm fixes from Andrew Morton:
 "12 hotfixes.

  Two are cc:stable and the remainder either address post-6.7 issues or
  aren't considered necessary for earlier kernel versions"

* tag 'mm-hotfixes-stable-2024-01-05-11-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()
  mailmap: add entries for Mathieu Othacehe
  MAINTAINERS: change vmware.com addresses to broadcom.com
  arch/mm/fault: fix major fault accounting when retrying under per-VMA lock
  mm/mglru: skip special VMAs in lru_gen_look_around()
  MAINTAINERS: hand over hwpoison maintainership to Miaohe Lin
  MAINTAINERS: remove hugetlb maintainer Mike Kravetz
  mm: fix unmap_mapping_range high bits shift bug
  mm: memcg: fix split queue list crash when large folio migration
  mm: fix arithmetic for max_prop_frac when setting max_ratio
  mm: fix arithmetic for bdi min_ratio
  mm: align larger anonymous mappings on THP boundaries

Pull nfsd fix from Chuck Lever:

 - Fix another regression in the NFSD administrative API

* tag 'nfsd-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: drop the nfsd_put helper

Merge tag 'firewire-fixes-6.7-final' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire fix from Takashi Sakamoto:
 "A single patch to suppress unexpected system reboot in AMD Ryzen
  machines with PCIe card consisting of Asmedia ASM1083/1085 and
  VT6306/6307/6308.

  When the 1394 OHCI driver for the card accesses a specific register
  in PCI memory space, the system reboot often occurs.

  The issue affects all versions of Linux kernel as long as the 1394
  OHCI driver is included. The mechanism of unexpected system reboot is
  not clear, so the driver is changed to avoid the access itself when
  detecting the combination of hardware"

* tag 'firewire-fixes-6.7-final' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: ohci: suppress unexpected system reboot in AMD Ryzen machines and ASM108x/VT630x PCIe cards

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix releasing the host by canceling the delayed work
   - Fix pause retune on all RPMB partitions

  MMC host:
   - meson-mx-sdhc: Fix HW hang during card initialization
   - sdhci-sprd: Fix eMMC init failure after HW reset"

* tag 'mmc-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-sprd: Fix eMMC init failure after hw reset
  mmc: core: Cancel delayed work before releasing host
  mmc: rpmb: fixes pause retune on all RPMB partitions.
  mmc: meson-mx-sdhc: Fix initialization frozen issue

Pull more drm fixes from Dave Airlie:
 "The amdgpu ones are fairly normal, the one that is a bit large is a
  fix for a newly introduced IP in 6.7 so unlikely to cause regressions.

  The nouveau ones are mostly memory leaks and debugging cleanups from
  the GSP (new nvidia firmware) enablement. There are some GSP changes
  to the message passing code and a subsequent fix for eDP panel turn
  on, that means my laptop can turn on the panel in GSP mode. These are
  fairly low chance of disrupting things since GSP is new in 6.7. The
  final not all in GSP fix is a deadlock seen with i915/nouveau when GSP
  is used where the the fence and irq paths have locking inversions,
  I've pushed some irq enablement out to a workqueue, and this has seen
  some fairly decent testing.

  amdgpu:
   - DP MST fix
   - SMU 13.0.6 fixes
   - fix displays on macbooks using vega12
   - fix VSC and colorimetry on DP/eDP

  nouveau:
   - fix deadlock between fence signalling and irq paths
   - fix GSP memory leaks
   - fix GSP leftover debug
   - hide some GSP callback messages
   - fix GSP display disable path
   - fix GSP ACPI interaction
   - handle errors in ctrl messages
   - use errors info to fix DP link training"

* tag 'drm-fixes-2024-01-05' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/dp: Honor GSP link training retry timeouts
  nouveau: push event block/allowing out of the fence context
  nouveau/gsp: always free the alloc messages on r535
  nouveau/gsp: don't free ctrl messages on errors
  nouveau/gsp: convert gsp errors to generic errors
  drm/nouveau/gsp: Fix ACPI MXDM/MXDS method invocations
  nouveau/gsp: free userd allocation.
  nouveau/gsp: free acpi object after use
  nouveau: fix disp disabling with GSP
  nouveau/gsp: drop some acpi related debug
  nouveau/gsp: add three notifier callbacks that we see in normal operation (v2)
  drm/amd/pm: Use gpu_metrics_v1_5 for SMUv13.0.6
  drm/amd/pm: Add gpu_metrics_v1_5
  drm/amd/pm: Add mem_busy_percent for GCv9.4.3 apu
  drm/amd/display: Fix sending VSC (+ colorimetry) packets for DP/eDP displays without PSR
  drm/amdgpu: skip gpu_info fw loading on navi12
  drm/amd/display: add nv12 bounding box
  drm/amd/pm: Update metric table for jpeg/vcn data
  drm/amd/pm: Use separate metric table for APU
  drm/amd/display: pbn_div need be updated for hotplug event

syzbot is reporting uninit-value at shrinker_alloc(), for commit
307becec ("mm: shrinker: add a secondary array for
shrinker_info::{map, nr_deferred}") which assumed that the ->unit was
allocated with __GFP_ZERO forgot to replace kvmalloc_node() in
expand_one_shrinker_info() with kvzalloc_node().

Link: https://lkml.kernel.org/r/9226cc0a-10e0-4489-80c5-58c3b5b4359c@I-love.SAKURA.ne.jpReported-by: syzbot <syzbot+1e0ed05798af62917464@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=1e0ed05798af62917464
Fixes: 307becec ("mm: shrinker: add a secondary array for shrinker_info::{map, nr_deferred}")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Pull ARM SoC fixes from Arnd Bergmann:
 "These are two correctness fixes for handing DT input in the
  Allwinner (sunxi) SMP startup code"

* tag 'soc-fixes-6.7-3a' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: sun9i: smp: fix return code check of of_property_match_string
  ARM: sun9i: smp: Fix array-index-out-of-bounds read in sunxi_mc_smp_init

Pull kvm fix from Paolo Bonzini:

 - Fix boolean logic in intel_guest_get_msrs

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86/pmu: fix masking logic for MSR_CORE_PERF_GLOBAL_CTRL

Merge tag 'probes-fixes-v6.7-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull kprobes/x86 fix from Masami Hiramatsu:

 - Fix to emulate indirect call which size is not 5 byte.

   Current code expects the indirect call instructions are 5 bytes, but
   that is incorrect. Usually indirect call based on register is shorter
   than that, thus the emulation causes a kernel crash by accessing
   wrong instruction boundary. This uses the instruction size to
   calculate the return address correctly.

* tag 'probes-fixes-v6.7-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  x86/kprobes: fix incorrect return address calculation in kprobe_emulate_call_indirect

Pull smb client fixes from Steve French:
 "Three important multichannel smb3 client fixes found in recent
  testing:

   - fix oops due to incorrect refcounting of interfaces after
     disabling multichannel

   - fix possible unrecoverable session state after disabling
     multichannel with active sessions

   - fix two places that were missing use of chan_lock"

* tag '6.7-rc8-smb3-mchan-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: do not depend on release_iface for maintaining iface_list
  cifs: cifs_chan_is_iface_active should be called with chan_lock held
  cifs: after disabling multichannel, mark tcon for reconnect

firewire: ohci: suppress unexpected system reboot in AMD Ryzen machines and ASM108x/VT630x PCIe cards

VIA VT6306/6307/6308 provides PCI interface compliant to 1394 OHCI. When
the hardware is combined with Asmedia ASM1083/1085 PCIe-to-PCI bus bridge,
it appears that accesses to its 'Isochronous Cycle Timer' register (offset
0xf0 on PCI memory space) often causes unexpected system reboot in any
type of AMD Ryzen machine (both 0x17 and 0x19 families). It does not
appears in the other type of machine (AMD pre-Ryzen machine, Intel
machine, at least), or in the other OHCI 1394 hardware (e.g. Texas
Instruments).

The issue explicitly appears at a commit dcadfd7f ("firewire: core:
use union for callback of transaction completion") added to v6.5 kernel.
It changed 1394 OHCI driver to access to the register every time to
dispatch local asynchronous transaction. However, the issue exists in
older version of kernel as long as it runs in AMD Ryzen machine, since
the access to the register is required to maintain bus time. It is not
hard to imagine that users experience the unexpected system reboot when
generating bus reset by plugging any devices in, or reading the register
by time-aware application programs; e.g. audio sample processing.

This commit suppresses the unexpected system reboot in the combination of
hardware. It avoids the access itself. As a result, the software stack can
not provide the hardware time anymore to unit drivers, userspace
applications, and nodes in the same IEEE 1394 bus. It brings apparent
disadvantage since time-aware application programs require it, while
time-unaware applications are available again; e.g. sbp2.

Cc: stable@vger.kernel.org
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Closes: https://bugzilla.suse.com/show_bug.cgi?id=1215436Reported-by: Mario Limonciello <mario.limonciello@amd.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217994Reported-by: Tobias Gruetzmacher <tobias-lists@23.gs>
Closes: https://sourceforge.net/p/linux1394/mailman/message/58711901/
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2240973
Closes: https://bugs.launchpad.net/linux/+bug/2043905
Link: https://lore.kernel.org/r/20240102110150.244475-1-o-takashi@sakamocchi.jpSigned-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

It's not safe to call nfsd_put once nfsd_last_thread has been called, as
that function will zero out the nn->nfsd_serv pointer.

Drop the nfsd_put helper altogether and open-code the svc_put in its
callers instead. That allows us to not be reliant on the value of that
pointer when handling an error.

Fixes: 2a501f55 ("nfsd: call nfsd_last_thread() before final nfsd_put()")
Reported-by: Zhi Li <yieli@redhat.com>
Cc: NeilBrown <neilb@suse.de>
Signed-off-by: Jeffrey Layton <jlayton@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

Turns out that one of the ways that Nvidia's driver handles the pre-LT
timeout for eDP panels is by providing a retry timeout in their link
training callbacks that we're expected to wait for. Up until now we didn't
pay any attention to this parameter.

So, start honoring the timeout if link training fails - and retry up to 3
times. The "3 times" bit comes from OpenRM's link training code.

[airlied: this fixes the panel on one of my laptops]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-12-airlied@gmail.com

There is a deadlock between the irq and fctx locks,
the irq handling takes irq then fctx lock
the fence signalling takes fctx then irq lock

This splits the fence signalling path so the code that hits
the irq lock is done in a separate work queue.

This seems to fix crashes/hangs when using nouveau gsp with
i915 primary GPU.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-11-airlied@gmail.com

Fixes a memory leak seen with kmemleak.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-10-airlied@gmail.com

It looks like for some messages the upper layers need to get access to the
results of the message so we can interpret it.

Rework the ctrl push interface to not free things and cleanup properly
whereever it errors out.

Requested-by: Lyude
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-9-airlied@gmail.com

This should let the upper layers retry as needed on EAGAIN.

There may be other values we will care about in the future, but
this covers our present needs.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-8-airlied@gmail.com

Currently we get an error from ACPI because both of these arguments expect
a single argument, and we don't provide one. I'm not totally clear on what
that argument does, but we're able to find the missing value from
_acpiCacheMethodData() in src/kernel/platform/acpi_common.c in nvidia's
driver. So, let's add that - which doesn't get eDP displays to power on
quite yet, but gets rid of the argument warning at least.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-7-airlied@gmail.com

This was being leaked.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-6-airlied@gmail.com

This fixes a memory leak for the acpi dod object.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-5-airlied@gmail.com

This func ptr here is normally static allocation, but gsp r535
uses a dynamic pointer, so we need to handle that better.

This fixes a crash with GSP when you use config=disp=0 to avoid
disp problems.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-4-airlied@gmail.com

These were leftover debug, if we need to bring them back do so
for debugging later.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-3-airlied@gmail.com

Add NULL callbacks for some things GSP calls that we don't handle, but know about
so we avoid the logging.

v2: Timur suggested allowing null fn.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222043308.3090089-2-airlied@gmail.com

Merge tag 'amd-drm-fixes-6.7-2024-01-04' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amdgpu:
- DP MST fix
- SMU 13.0.6 fixes
- Fix displays on macbooks using vega12
- Fix VSC and colorimetry on DP/eDP
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240104152139.4931-1-alexander.deucher@amd.com

Pull networking fixes from Jakub Kicinski:
 "Including fixes from wireless and netfilter.

  We haven't accumulated much over the break. If it wasn't for the
  uninterrupted stream of fixes for Intel drivers this PR would be very
  slim. There was a handful of user reports, however, either they stood
  out because of the lower traffic or users have had more time to test
  over the break. The ones which are v6.7-relevant should be wrapped up.

  Current release - regressions:

   - Revert "net: ipv6/addrconf: clamp preferred_lft to the minimum
     required", it caused issues on networks where routers send prefixes
     with preferred_lft=0

   - wifi:
      - iwlwifi: pcie: don't synchronize IRQs from IRQ, prevent deadlock
      - mac80211: fix re-adding debugfs entries during reconfiguration

  Current release - new code bugs:

   - tcp: print AO/MD5 messages only if there are any keys

  Previous releases - regressions:

   - virtio_net: fix missing dma unmap for resize, prevent OOM

  Previous releases - always broken:

   - mptcp: prevent tcp diag from closing listener subflows

   - nf_tables:
      - set transport header offset for egress hook, fix IPv4 mangling
      - skip set commit for deleted/destroyed sets, avoid double deactivation

   - nat: make sure action is set for all ct states, fix openvswitch
     matching on ICMP packets in related state

   - eth: mlxbf_gige: fix receive hang under heavy traffic

   - eth: r8169: fix PCI error on system resume for RTL8168FP

   - net: add missing getsockopt(SO_TIMESTAMPING_NEW) and cmsg handling"

* tag 'net-6.7-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (52 commits)
  net/tcp: Only produce AO/MD5 logs if there are any keys
  net: Implement missing SO_TIMESTAMPING_NEW cmsg support
  bnxt_en: Remove mis-applied code from bnxt_cfg_ntp_filters()
  net: ravb: Wait for operating mode to be applied
  asix: Add check for usbnet_get_endpoints
  octeontx2-af: Re-enable MAC TX in otx2_stop processing
  octeontx2-af: Always configure NIX TX link credits based on max frame size
  net/smc: fix invalid link access in dumping SMC-R connections
  net/qla3xxx: fix potential memleak in ql_alloc_buffer_queues
  virtio_net: fix missing dma unmap for resize
  igc: Fix hicredit calculation
  ice: fix Get link status data length
  i40e: Restore VF MSI-X state during PCI reset
  i40e: fix use-after-free in i40e_aqc_add_filters()
  net: Save and restore msg_namelen in sock_sendmsg
  netfilter: nft_immediate: drop chain reference counter on error
  netfilter: nf_nat: fix action not being set for all ct states
  net: bcmgenet: Fix FCS generation for fragmented skbuffs
  mptcp: prevent tcp diag from closing listener subflows
  MAINTAINERS: add Geliang as reviewer for MPTCP
  ...

Commit 688eb819 ("x86/csum: Improve performance of `csum_partial`")
ended up improving the code generation for the IP csum calculations, and
in particular special-casing the 40-byte case that is a hot case for
IPv6 headers.

It then had _another_ special case for the 64-byte unrolled loop, which
did two chains of 32-byte blocks, which allows modern CPU's to improve
performance by doing the chains in parallel thanks to renaming the carry
flag.

This just unifies the special cases and combines them into just one
single helper the 40-byte csum case, and replaces the 64-byte case by a
80-byte case that just does that single helper twice.  It avoids having
all these different versions of inline assembly, and actually improved
performance further in my tests.

There was never anything magical about the 64-byte unrolled case, even
though it happens to be a common size (and typically is the cacheline
size).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The special case for odd aligned buffers is unnecessary and mostly
just adds overhead. Aligned buffers is the expectations, and even for
unaligned buffer, the only case that was helped is if the buffer was
1-byte from word aligned which is ~1/7 of the cases. Overall it seems
highly unlikely to be worth to extra branch.

It was left in the previous perf improvement patch because I was
erroneously comparing the exact output of `csum_partial(...)`, but
really we only need `csum_fold(csum_partial(...))` to match so its
safe to remove.

All csum kunit tests pass.
Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Laight <david.laight@aculab.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'platform-drivers-x86-v6.7-7' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fix from Ilpo Järvinen:
 "Unfortunately the P2SB deadlock fix broke some older HW and we need
  some time to figure out the best way to fix the issue so reverting the
  deadlock fix for now"

* tag 'platform-drivers-x86-v6.7-7' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  Revert "platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe"

Pull sound fixes from Takashi Iwai:
 "It became more than wished, partly because of vacations. But all
  changes are fairly device-specific and should be safe to apply:

   - A regression fix for Oops at ASoC HD-audio probe

   - A series of TAS2781 HD-audio codec fixes

   - A random build regression fix with SPI helpers

   - Minor endianness fix for USB-audio mixer code

   - ASoC FSL driver error handling fix

   - ASoC Mediatek driver register fix

   - A series of ASoC meson g12a driver fixes

   - A few usual HD-audio oneliner quirks"

* tag 'sound-6.7-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP ProBook 440 G6
  ASoC: meson: g12a-tohdmitx: Fix event generation for S/PDIF mux
  ASoC: meson: g12a-toacodec: Fix event generation
  ASoC: meson: g12a-tohdmitx: Validate written enum values
  ASoC: meson: g12a-toacodec: Validate written enum values
  ASoC: SOF: Intel: hda-codec: Delay the codec device registration
  ALSA: hda: cs35l41: fix building without CONFIG_SPI
  ALSA: hda/realtek: fix mute/micmute LEDs for a HP ZBook
  ALSA: hda/realtek: enable SND_PCI_QUIRK for hp pavilion 14-ec1xxx series
  ASoC: mediatek: mt8186: fix AUD_PAD_TOP register and offset
  ALSA: scarlett2: Convert meter levels from little-endian
  ALSA: hda/tas2781: remove sound controls in unbind
  ALSA: hda/tas2781: move set_drv_data outside tasdevice_init
  ALSA: hda/tas2781: fix typos in comment
  ALSA: hda/tas2781: do not use regcache
  ASoC: fsl_rpmsg: Fix error handler with pm_runtime_enable

Pull drm fixes from Dave Airlie:
 "These were from over the holiday period, mainly i915, a couple of
  qaic, bridge and an mgag200.

  qaic:
   - fix GEM import
   - add quirk for soc version

  bridge:
   - parade-ps8640, ti-sn65dsi86: fix aux reads bounds

  mgag200:
   - fix gamma LUT init

  i915:
   - Fix bogus DPCD rev usage for DP phy test pattern setup
   - Fix handling of MMIO triggered reports in the OA buffer"

* tag 'drm-fixes-2024-01-04' of git://anongit.freedesktop.org/drm/drm:
  drm/i915/perf: Update handling of MMIO triggered reports
  drm/i915/dp: Fix passing the correct DPCD_REV for drm_dp_set_phy_test_pattern
  drm/mgag200: Fix gamma lut not initialized for G200ER, G200EV, G200SE
  drm/bridge: ps8640: Fix size mismatch warning w/ len
  drm/bridge: ti-sn65dsi86: Never store more than msg->size bytes in AUX xfer
  drm/bridge: parade-ps8640: Never store more than msg->size bytes in AUX xfer
  accel/qaic: Implement quirk for SOC_HW_VERSION
  accel/qaic: Fix GEM import path code

User won't care about inproper hash options in the TCP header if they
don't use neither TCP-AO nor TCP-MD5. Yet, those logs can add up in
syslog, while not being a real concern to the host admin:
> kernel: TCP: TCP segment has incorrect auth options set for XX.20.239.12.54681->XX.XX.90.103.80 [S]

Keep silent and avoid logging when there aren't any keys in the system.

Side-note: I also defined static_branch_tcp_*() helpers to avoid more
ifdeffery, going to remove more ifdeffery further with their help.
Reported-by: Christian Kujau <lists@nerdbynature.de>
Closes: https://lore.kernel.org/all/f6b59324-1417-566f-a976-ff2402718a8d@nerdbynature.de/Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Fixes: 2717b5ad ("net/tcp: Add tcp_hash_fail() ratelimited logs")
Link: https://lore.kernel.org/r/20240104-tcp_hash_fail-logs-v1-1-ff3e1f6f9e72@arista.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2024-01-03 (i40e, ice, igc)

This series contains updates to i40e, ice, and igc drivers.

Ke Xiao fixes use after free for unicast filters on i40e.

Andrii restores VF MSI-X flag after PCI reset on i40e.

Paul corrects admin queue link status structure to fulfill firmware
expectations for ice.

Rodrigo Cataldo corrects value used for hicredit calculations on igc.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  igc: Fix hicredit calculation
  ice: fix Get link status data length
  i40e: Restore VF MSI-X state during PCI reset
  i40e: fix use-after-free in i40e_aqc_add_filters()
====================

Link: https://lore.kernel.org/r/20240103193254.822968-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 9718475e ("socket: Add SO_TIMESTAMPING_NEW") added the new
socket option SO_TIMESTAMPING_NEW. However, it was never implemented in
__sock_cmsg_send thus breaking SO_TIMESTAMPING cmsg for platforms using
SO_TIMESTAMPING_NEW.

Fixes: 9718475e ("socket: Add SO_TIMESTAMPING_NEW")
Link: https://lore.kernel.org/netdev/6a7281bf-bc4a-4f75-bb88-7011908ae471@app.fastmail.com/Signed-off-by: Thomas Lange <thomas@corelatus.se>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20240104085744.49164-1-thomas@corelatus.seSigned-off-by: Jakub Kicinski <kuba@kernel.org>

This reverts commit b28ff7a7.

The commit introduced P2SB device scan and resource cache during the
boot process to avoid deadlock. But it caused detection failure of
IDE controllers on old systems [1]. The IDE controllers on old systems
and P2SB devices on newer systems have same PCI DEVFN. It is suspected
the confusion between those two is the failure cause. Revert the change
at this moment until the proper solution gets ready.

Link: https://lore.kernel.org/platform-driver-x86/CABq1_vjfyp_B-f4LAL6pg394bP6nDFyvg110TOLHHb0x4aCPeg@mail.gmail.com/T/#m07b30468d9676fc5e3bb2122371121e4559bb383 [1]
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20240104114050.3142690-1-shinichiro.kawasaki@wdc.comReviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

When commit c59a1f10 ("KVM: x86/pmu: Add IA32_PEBS_ENABLE
MSR emulation for extended PEBS") switched the initialization of
cpuc->guest_switch_msrs to use compound literals, it screwed up
the boolean logic:

+	u64 pebs_mask = cpuc->pebs_enabled & x86_pmu.pebs_capable;
...
-	arr[0].guest = intel_ctrl & ~cpuc->intel_ctrl_host_mask;
-	arr[0].guest &= ~(cpuc->pebs_enabled & x86_pmu.pebs_capable);
+               .guest = intel_ctrl & (~cpuc->intel_ctrl_host_mask | ~pebs_mask),

Before the patch, the value of arr[0].guest would have been intel_ctrl &
~cpuc->intel_ctrl_host_mask & ~pebs_mask.  The intent is to always treat
PEBS events as host-only because, while the guest runs, there is no way
to tell the processor about the virtual address where to put PEBS records
intended for the host.

Unfortunately, the new expression can be expanded to

	(intel_ctrl & ~cpuc->intel_ctrl_host_mask) | (intel_ctrl & ~pebs_mask)

which makes no sense; it includes any bit that isn't *both* marked as
exclude_guest and using PEBS.  So, reinstate the old logic.  Another
way to write it could be "intel_ctrl & ~(cpuc->intel_ctrl_host_mask |
pebs_mask)", presumably the intention of the author of the faulty.
However, I personally find the repeated application of A AND NOT B to
be a bit more readable.

This shows up as guest failures when running concurrent long-running
perf workloads on the host, and was reported to happen with rcutorture.
All guests on a given host would die simultaneously with something like an
instruction fault or a segmentation violation.
Reported-by: Paul E. McKenney <paulmck@kernel.org>
Analyzed-by: Sean Christopherson <seanjc@google.com>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Cc: stable@vger.kernel.org
Fixes: c59a1f10 ("KVM: x86/pmu: Add IA32_PEBS_ENABLE MSR emulation for extended PEBS")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>