Merge tag 'amd-drm-fixes-6.5-2023-08-09' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.5-2023-08-09:

amdgpu:
- S/G display workaround for platforms with >= 64G of memory
- S0i3 fix
- SMU 13.0.0 fixes
- Disable SMU 13.x OD features temporarily while the interface is reworked
  to enable additional functionality
- Fix cursor gamma issues on DCN3+
- SMU 13.0.6 fixes
- Fix possible UAF in CS IOCTL
- Polaris display regression fix
- Only enable CP GFX shadowing on SR-IOV

amdkfd:
- Raven/Picasso KFD regression fix
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230809182827.8135-1-alexander.deucher@amd.com

Multiple fixes for nouveau around memory safety and DisplayPort, one fix
to reduce the log level of rockchip, a power state fix for the it6505
bridge, a timing fix for the lt9611 bridge, a cache maintenance fix for
ivpu and one to reset vma->vm_ops on mmap for shmem-helper.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/fwed6gzdtkse5ocrgd37elhyw7qirfptsvfp5mqqverdzifhxj@4da3vesxcqp2

The dma-buf backend is supposed to provide its own vm_ops, but some
implementation just have nothing special to do and leave vm_ops
untouched, probably expecting this field to be zero initialized (this
is the case with the system_heap implementation for instance).
Let's reset vma->vm_ops to NULL to keep things working with these
implementations.

Fixes: 26d3ac3c ("drm/shmem-helpers: Redirect mmap for imported dma-buf")
Cc: <stable@vger.kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: Roman Stratiienko <r.stratiienko@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Roman Stratiienko <r.stratiienko@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230724112610.60974-1-boris.brezillon@collabora.com

Use the dGPU path instead.  There were a lot of platform
issues with IOMMU in general on these chips due to windows
not enabling IOMMU at the time.  The dGPU path has been
used for a long time with newer APUs and works fine.  This
also paves the way to simplify the driver significantly.
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Use the dGPU path instead.  There were a lot of platform
issues with IOMMU in general on these chips due to windows
not enabling IOMMU at the time.  The dGPU path has been
used for a long time with newer APUs and works fine.  This
also paves the way to simplify the driver significantly.

v2: use the dGPU queue manager functions
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

We are dropping the IOMMUv2 path, so no need to enable this.
It's often buggy on consumer platforms anyway.
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This is only required for SR-IOV world switches, but it
adds additional latency leading to reduced performance in
some benchmarks.  Disable for now on bare metal.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

DCE products don't define a `remove_stream_from_ctx` like DCN ones
do. This means that when compute_mst_dsc_configs_for_state() is called
it always returns -EINVAL which causes MST to fail to setup.

Cc: stable@vger.kernel.org # 6.4.y
Cc: Harry Wentland <Harry.Wentland@amd.com>
Reported-by: Klaus.Kusche@computerix.info
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2671
Fixes: efa4c4df ("drm/amd/display: call remove_stream_from_ctx from res_pool funcs")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Since the gang_size check is outside of chunk parsing
loop, we need to reset i before we free the chunk data.

Suggested by Ye Zhang (@VAR10CK) of Baidu Security.
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Energy counter should be reported in units of 15.259 uJ. Don't apply
any conversion.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Don't set predefined degamma curve to cursor plane if the cursor
attribute flag is not set. Applying a degamma curve to the cursor by
default breaks userspace expectation. Checking the flag before
performing any color transformation prevents too dark cursor gamma in
DCN3+ on many Linux desktop environment (KDE Plasma, GNOME,
wlroots-based, etc.) as reported at:
- https://gitlab.freedesktop.org/drm/amd/-/issues/1513

This is the same approach followed by DCN2 drivers where the issue is
not present.

Fixes: 03f54d7d ("drm/amd/display: Add DCN3 DPP")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1513Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

The existing OD interface cannot support the growing demand for more
OD features. We are in the transition to a new OD mechanism. So,
disable the SMU13 OD feature support temporarily. And this should be
reverted when the new OD mechanism online.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

correct the pcie width value in pp_dpm_pcie for smu 13.0.0
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Some systems are only connected by HDMI or DP, so warning related to
missing eDP is unnecessary.  Downgrade to debug instead.

Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Fixes: 6d9b6dce ("drm/amd/display: only warn once in dce110_edp_wait_for_hpd_ready()")
Reported-by: Mastan.Katragadda@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

On PSP v13.x ASICs, boot loader will set only the MSB to 1 and clear the
least significant bits for any command submission. Hence match against
the exact register value, otherwise a register value of all 0xFFs also
could falsely indicate that boot loader is ready. Also, from PSP v13.0.6
and newer, bits[7:0] will be used to indicate command error status.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

For SMU v13.0.4/11, driver does not need to stop RLC for S0i3,
the firmwares will handle that properly.
Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Users report a white flickering screen on multiple systems that
is tied to having 64GB or more memory.  When S/G is enabled pages
will get pinned to both VRAM carve out and system RAM leading to
this.

Until it can be fixed properly, disable S/G when 64GB of memory or
more is detected.  This will force pages to be pinned into VRAM.
This should fix white screen flickers but if VRAM pressure is
encountered may lead to black screens.  It's a trade-off for now.

Fixes: 81d0bcf9 ("drm/amdgpu: make display pinning more flexible (v2)")
Cc: Hamza Mahfooz <Hamza.Mahfooz@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: <stable@vger.kernel.org> # 6.1.y: bf0207e1 ("drm/amdgpu: add S/G display parameter")
Cc: <stable@vger.kernel.org> # 6.4.y
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2735
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2354Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Userspace should not be able to trigger DRM_ERROR messages to spam the
logs; especially not through atomic commit parameters which are
completely legitimate for userspace to attempt.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Fixes: 7707f722 ("drm/rockchip: Add support for afbc")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230808104405.522493-1-daniels@collabora.com

Buffers mapped with pgprot_writecombined() are not correctly
flushed. This triggers issues on VPU access using random
memory content such as MMU translation faults, invalid context
descriptors being fetched and can lead to VPU FW crashes.

Fixes: 647371a6 ("accel/ivpu: Add GEM buffer object management")
Cc: stable@vger.kernel.org # 6.3+
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230802063735.3005291-1-stanislaw.gruszka@linux.intel.com

The original commit adding that check tried to protect the kenrel against
a potential invalid NULL pointer access.

However we call nouveau_connector_detect_depth once without a native_mode
set on purpose for non LVDS connectors and this broke DP support in a few
cases.

Cc: Olaf Skibbe <news@kravcenko.com>
Cc: Lyude Paul <lyude@redhat.com>
Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/238
Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/245
Fixes: 20a2ce87 ("drm/nouveau/dp: check for NULL nv_connector->native_mode")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230805101813.2603989-1-kherbst@redhat.com

Pull vfs fixes from Christian Brauner:

 - Fix a wrong check for O_TMPFILE during RESOLVE_CACHED lookup

 - Clean up directory iterators and clarify file_needs_f_pos_lock()

* tag 'v6.5-rc5.vfs.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  fs: rely on ->iterate_shared to determine f_pos locking
  vfs: get rid of old '->iterate' directory operation
  proc: fix missing conversion to 'iterate_shared'
  open: make RESOLVE_CACHED correctly test for O_TMPFILE

Now that we removed ->iterate we don't need to check for either
->iterate or ->iterate_shared in file_needs_f_pos_lock(). Simply check
for ->iterate_shared instead. This will tell us whether we need to
unconditionally take the lock. Not just does it allow us to avoid
checking f_inode's mode it also actually clearly shows that we're
locking because of readdir.
Signed-off-by: Christian Brauner <brauner@kernel.org>

All users now just use '->iterate_shared()', which only takes the
directory inode lock for reading.

Filesystems that never got convered to shared mode now instead use a
wrapper that drops the lock, re-takes it in write mode, calls the old
function, and then downgrades the lock back to read mode.

This way the VFS layer and other callers no longer need to care about
filesystems that never got converted to the modern era.

The filesystems that use the new wrapper are ceph, coda, exfat, jfs,
ntfs, ocfs2, overlayfs, and vboxsf.

Honestly, several of them look like they really could just iterate their
directories in shared mode and skip the wrapper entirely, but the point
of this change is to not change semantics or fix filesystems that
haven't been fixed in the last 7+ years, but to finally get rid of the
dual iterators.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

I'm looking at the directory handling due to the discussion about f_pos
locking (see commit 79796425: "file: reinstate f_pos locking
optimization for regular files"), and wanting to clean that up.

And one source of ugliness is how we were supposed to move filesystems
over to the '->iterate_shared()' function that only takes the inode lock
for reading many many years ago, but several filesystems still use the
bad old '->iterate()' that takes the inode lock for exclusive access.

See commit 61922694 ("introduce a parallel variant of ->iterate()")
that also added some documentation stating

      Old method is only used if the new one is absent; eventually it will
      be removed.  Switch while you still can; the old one won't stay.

and that was back in April 2016.  Here we are, many years later, and the
old version is still clearly sadly alive and well.

Now, some of those old style iterators are probably just because the
filesystem may end up having per-inode mutable data that it uses for
iterating a directory, but at least one case is just a mistake.

Al switched over most filesystems to use '->iterate_shared()' back when
it was introduced.  In particular, the /proc filesystem was converted as
one of the first ones in commit f50752ea ("switch all procfs
directories ->iterate_shared()").

But then later one new user of '->iterate()' was then re-introduced by
commit 6d9c939d ("procfs: add smack subdir to attrs").

And that's clearly not what we wanted, since that new case just uses the
same 'proc_pident_readdir()' and 'proc_pident_lookup()' helper functions
that other /proc pident directories use, and they are most definitely
safe to use with the inode lock held shared.

So just fix it.

This still leaves a fair number of oddball filesystems using the
old-style directory iterator (ceph, coda, exfat, jfs, ntfs, ocfs2,
overlayfs, and vboxsf), but at least we don't have any remaining in the
core filesystems.

I'm going to add a wrapper function that just drops the read-lock and
takes it as a write lock, so that we can clean up the core vfs layer and
make all the ugly 'this filesystem needs exclusive inode locking' be
just filesystem-internal warts.

I just didn't want to make that conversion when we still had a core user
left.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

O_TMPFILE is actually __O_TMPFILE|O_DIRECTORY. This means that the old
fast-path check for RESOLVE_CACHED would reject all users passing
O_DIRECTORY with -EAGAIN, when in fact the intended test was to check
for __O_TMPFILE.

Cc: stable@vger.kernel.org # v5.12+
Fixes: 99668f61 ("fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED")
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Message-Id: <20230806-resolve_cached-o_tmpfile-v1-1-7ba16308465e@cyphar.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

Pull rust fixes from Miguel Ojeda:

 - Allocator: prevent mis-aligned allocation

 - Types: delete 'ForeignOwnable::borrow_mut'. A sound replacement is
   planned for the merge window

 - Build: fix bindgen error with UBSAN_BOUNDS_STRICT

* tag 'rust-fixes-6.5-rc5' of https://github.com/Rust-for-Linux/linux:
  rust: fix bindgen build error with UBSAN_BOUNDS_STRICT
  rust: delete `ForeignOwnable::borrow_mut`
  rust: allocator: Prevent mis-aligned allocation

Pull ata fix from Damien Le Moal:

 - Prevent the scsi disk driver from issuing a START STOP UNIT command
   for ATA devices during system resume as this causes various issues
   reported by multiple users.

* tag 'ata-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata,scsi: do not issue START STOP UNIT on resume

Pull smb client fix from Steve French:

 - Fix DFS interlink problem (different namespace)

* tag '6.5-rc4-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: fix dfs link mount against w2k8

Pull powerpc fixes from Michael Ellerman:

 - Fix vmemmap altmap boundary check which could cause memory hotunplug
   failure

 - Create a dummy stackframe to fix ftrace stack unwind

 - Fix secondary thread bringup for Book3E ELFv2 kernels

 - Use early_ioremap/unmap() in via_calibrate_decr()

Thanks to Aneesh Kumar K.V, Benjamin Gray, Christophe Leroy, David
Hildenbrand, and Naveen N Rao.

* tag 'powerpc-6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/powermac: Use early_* IO variants in via_calibrate_decr()
  powerpc/64e: Fix secondary thread bringup for ELFv2 kernels
  powerpc/ftrace: Create a dummy stackframe to fix stack unwind
  powerpc/mm/altmap: Fix altmap boundary check

Pull parisc architecture fixes from Helge Deller:

 - early fixmap preallocation to fix boot failures on kernel >= 6.4

 - remove DMA leftover code in parport_gsc

 - drop old comments and code style fixes

* tag 'parisc-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: unaligned: Add required spaces after ','
  parport: gsc: remove DMA leftover code
  parisc: pci-dma: remove unused and dead EISA code and comment
  parisc/mm: preallocate fixmap page tables at init

Pull clk fixes from Stephen Boyd:
 "A few clk driver fixes for some SoC clk drivers:

   - Change a usleep() to udelay() to avoid scheduling while atomic in
     the Amlogic PLL code

   - Revert a patch to the Mediatek MT8183 driver that caused an
     out-of-bounds write

   - Return the right error value when devm_of_iomap() fails in
     imx93_clocks_probe()

   - Constrain the Kconfig for the fixed mmio clk so that it depends on
     HAS_IOMEM and can't be compiled on architectures such as s390"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM
  clk: imx93: Propagate correct error in imx93_clocks_probe()
  clk: mediatek: mt8183: Add back SSPM related clocks
  clk: meson: change usleep_range() to udelay() for atomic context

Merge tag 'hyperv-fixes-signed-20230804' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - Fix a bug in a python script for Hyper-V (Ani Sinha)

 - Workaround a bug in Hyper-V when IBT is enabled (Michael Kelley)

 - Fix an issue parsing MP table when Linux runs in VTL2 (Saurabh
   Sengar)

 - Several cleanup patches (Nischala Yelchuri, Kameron Carr, YueHaibing,
   ZhiHu)

* tag 'hyperv-fixes-signed-20230804' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  Drivers: hv: vmbus: Remove unused extern declaration vmbus_ontimer()
  x86/hyperv: add noop functions to x86_init mpparse functions
  vmbus_testing: fix wrong python syntax for integer value comparison
  x86/hyperv: fix a warning in mshyperv.h
  x86/hyperv: Disable IBT when hypercall page lacks ENDBR instruction
  x86/hyperv: Improve code for referencing hyperv_pcpu_input_arg
  Drivers: hv: Change hv_free_hyperv_page() to take void * argument

Pull RISC-V fixes from Palmer Dabbelt:

 - A pair of fixes for build-related failures in the selftests

 - A fix for a sparse warning in acpi_os_ioremap()

 - A fix to restore the kernel PA offset in vmcoreinfo, to fix crash
   handling

* tag 'riscv-for-linus-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  Documentation: kdump: Add va_kernel_pa_offset for RISCV64
  riscv: Export va_kernel_pa_offset in vmcoreinfo
  RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
  selftests: riscv: Fix compilation error with vstate_exec_nolibc.c
  selftests/riscv: fix potential build failure during the "emit_tests" step

Pull power management fix from Rafael Wysocki:
 "Fix a sparse warning triggered by the TPMI interface recently added to
  the Intel RAPL power capping driver (Zhang Rui)"

* tag 'pm-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap: intel_rapl: Fix a sparse warning in TPMI interface

Pull arm64 fixes from Catalin Marinas:
 "More SVE/SME fixes for ptrace() and for the (potentially future) case
  where SME is implemented in hardware without SVE support"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE
  arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems
  arm64/ptrace: Don't enable SVE when setting streaming SVE
  arm64/ptrace: Flush FP state when setting ZT0
  arm64/fpsimd: Clear SME state in the target task when setting the VL

Pull mtd fixes from Miquel Raynal:
 "Raw NAND fixes:
   - fsl_upm: Fix an off-by one test in fun_exec_op()
   - Rockchip:
       - Align hwecc vs. raw page helper layouts
       - Fix oobfree offset and description
   - Meson: Fix OOB available bytes for ECC
   - Omap ELM: Fix incorrect type in assignment

  SPI-NOR fix:
   - Avoid holes in struct spi_mem_op

  Hyperbus fix:
   - Add Tudor as reviewer in MAINTAINERS

  SPI-NAND fixes:
   - Winbond and Toshiba: Fix ecc_get_status"

* tag 'mtd/fixes-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()
  mtd: spi-nor: avoid holes in struct spi_mem_op
  MAINTAINERS: Add myself as reviewer for HYPERBUS
  mtd: rawnand: rockchip: Align hwecc vs. raw page helper layouts
  mtd: rawnand: rockchip: fix oobfree offset and description
  mtd: rawnand: meson: fix OOB available bytes for ECC
  mtd: rawnand: omap_elm: Fix incorrect type in assignment
  mtd: spinand: winbond: Fix ecc_get_status
  mtd: spinand: toshiba: Fix ecc_get_status

Pull drm fixes from Dave Airlie:
 "Small set of fixes this week, i915 and a few misc ones. I didn't see
  an amd pull so maybe next week it'll have a few more on that driver.

  ttm:
   - NULL ptr deref fix

  panel:
   - add missing MODULE_DEVICE_TABLE

  imx/ipuv3:
   - timing fix

  i915:
   - Fix bug in getting msg length in AUX CH registers handler
   - Gen12 AUX invalidation fixes
   - Fix premature release of request's reusable memory"

* tag 'drm-fixes-2023-08-04' of git://anongit.freedesktop.org/drm/drm:
  drm/panel: samsung-s6d7aa0: Add MODULE_DEVICE_TABLE
  drm/i915: Fix premature release of request's reusable memory
  drm/i915/gt: Support aux invalidation on all engines
  drm/i915/gt: Poll aux invalidation register bit on invalidation
  drm/i915/gt: Enable the CCS_FLUSH bit in the pipe control and in the CS
  drm/i915/gt: Rename flags with bit_group_X according to the datasheet
  drm/i915/gt: Ensure memory quiesced before invalidation
  drm/i915: Add the gen12_needs_ccs_aux_inv helper
  drm/i915/gt: Cleanup aux invalidation registers
  drm/i915/gvt: Fix bug in getting msg length in AUX CH registers handler
  drm/imx/ipuv3: Fix front porch adjustment upon hactive aligning
  drm/ttm: check null pointer before accessing when swapping

Pull ceph fixes from Ilya Dryomov:
 "Two patches to improve RBD exclusive lock interaction with
  osd_request_timeout option and another fix to reduce the potential for
  erroneous blocklisting -- this time in CephFS. All going to stable"

* tag 'ceph-for-6.5-rc5' of https://github.com/ceph/ceph-client:
  libceph: fix potential hang in ceph_osdc_notify()
  rbd: prevent busy loop when requesting exclusive lock
  ceph: defer stopping mdsc delayed_work

In commit 20ea1e7d ("file: always lock position for
FMODE_ATOMIC_POS") we ended up always taking the file pos lock, because
pidfd_getfd() could get a reference to the file even when it didn't have
an elevated file count due to threading of other sharing cases.

But Mateusz Guzik reports that the extra locking is actually measurable,
so let's re-introduce the optimization, and only force the locking for
directory traversal.

Directories need the lock for correctness reasons, while regular files
only need it for "POSIX semantics".  Since pidfd_getfd() is about
debuggers etc special things that are _way_ outside of POSIX, we can
relax the rules for that case.
Reported-by: Mateusz Guzik <mjguzik@gmail.com>
Cc: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/linux-fsdevel/20230803095311.ijpvhx3fyrbkasul@f/Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>