Commit Graph
1412834 Commits
Author SHA1 Message Date
Dave Airlie 9ec3c8ee16 Merge tag 'drm-xe-next-2025-12-19' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
[airlied: fix guc submit double definition]
UAPI Changes:
- Multi-Queue support (Niranjana)
- Add DRM_XE_EXEC_QUEUE_SET_HANG_REPLAY_STATE (Brost)
- Add NO_COMPRESSION BO flag and query capability (Sanjay)
- Add gt_id to struct drm_xe_oa_unit (Ashutosh)
- Expose MERT OA unit (Ashutosh)
- Sysfs Survivability refactor (Riana)

Cross-subsystem Changes:
- VFIO: Add device specific vfio_pci driver variant for Intel graphics (Winiarski)

Driver Changes:
- MAINTAINERS update (Lucas -> Matt)
- Add helper to query compression enable status (Xin)
- Xe_VM fixes and updates (Shuicheng, Himal)
- Documentation fixes (Winiarski, Swaraj, Niranjana)
- Kunit fix (Roper)
- Fix potential leaks, uaf, null derref, and oversized
  allocations (Shuicheng, Sanjay, Mika, Tapani)
- Other minor fixes like kbuild duplication and sysfs_emit (Shuicheng, Madhur)
- Handle msix vector0 interrupt (Venkata)
- Scope-based forcewake and runtime PM (Roper, Raag)
- GuC/HuC related fixes and refactors (Lucas, Zhanjun, Brost, Julia, Wajdeczko)
- Fix conversion from clock ticks to milliseconds (Harish)
- SRIOV PF PF: Add support for MERT (Lukasz)
- Enable SR-IOV VF migration and other SRIOV updates (Winiarski,
  Satya, Brost, Wajdeczko, Piotr, Tomasz, Daniele)
- Optimize runtime suspend/resume and other PM improvements (Raag)
- Some W/a additions and updates (Bala, Harish, Roper)
- Use for_each_tlb_inval() to calculate invalidation fences (Roper)
- Fix VFIO link error (Arnd)
- Fix ix drm_gpusvm_init() arguments (Arnd)
- Other OA refactor (Ashutosh)
- Refactor PAT and expose debugfs (Xin)
- Enable Indirect Ring State for xe3p_xpc (Niranjana)
- MEI interrupt fix (Junxiao)
- Add stats for mode switching on hw_engine_group (Francois)
- DMA-Buf related changes (Thomas)
- Multi Queue feature support (Niranjana)
- Enable I2C controller for Crescent Island (Raag)
- Enable NVM for Crescent Island (Sasha)
- Increase TDF timeout (Jagmeet)
- Restore engine registers before restarting schedulers after GT reset (Jan)
- Page Reclamation Support for Xe3p Platforms (Brian, Brost, Oak)
- Fix performance when pagefaults and 3d/display share resources (Brost)
- More OA MERT work (Ashutosh)
- Fix return values (Dan)
- Some log level and messages improvements (Brost)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/aUXUhEgzs6hDLQuu@intel.com
2025-12-27 17:22:23 +10:00
Dave Airlie c5fb82d113 Merge tag 'drm-intel-next-2025-12-19' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
Beyond Display related:
 - Switch to use kernel standard fault injection in i915 (Juha-Pekka)

 Display uAPI related:
 - Display uapi vs. hw state fixes (Ville)
 - Expose sharpness only if num_scalers is >= 2 (Nemesa)

 Display related:
 - More display driver refactor and clean-ups, specially towards separation (Jani)
 - Add initial support Xe3p_LPD for NVL (Gustavo, Sai, )
 - BMG FBC W/a (Vinod)
 - RPM fix (Dibin)
 - Add MTL+ platforms to support dpll framework (Mika, Imre)
 - Other PLL related fixes (Imre)
 - Fix DIMM_S DRAM decoding on ICL (Ville)
 - Async flip refactor (Ville, Jouni)
 - Go back to using AUX interrupts (Ville)
 - Reduce severity of failed DII FEC enabling (Grzelak)
 - Enable system cache support for FBC (Vinod)
 - Move PSR/Panel Replay sink data into intel_connector and other PSR changes (Jouni)
 - Detect AuxCCS support via display parent interface (Tvrtko)
 - Clean up link BW/DSC slice config computation(Imre)
 - Toggle powerdown states for C10 on HDMI (Gustavo)
 - Add parent interface for PC8 forcewake tricks (Ville)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/aUW3bVDdE63aSFOJ@intel.com
2025-12-27 16:27:04 +10:00
Dave Airlie 7bc0f871f9 Merge tag 'drm-misc-next-2025-12-19' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for 6.20:

Core Changes:

  - dma-buf: Add tracepoints
  - sched: Introduce new helpers

Driver Changes:

  - amdxdna: Enable hardware context priority, Remove (obsolete and
    never public) NPU2 Support, Race condition fix
  - rockchip: Add RK3368 HDMI Support
  - rz-du: Add RZ/V2H(P) MIPI-DSI Support

  - panels:
    - st7571: Introduce SPI support
    - New panels: Sitronix ST7920, Samsung LTL106HL02, LG LH546WF1-ED01, HannStar HSD156JUW2

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20251219-arcane-quaint-skunk-e383b0@houat
2025-12-26 19:00:41 +10:00
Dave Airlie 6c8e404891 Merge tag 'drm-misc-next-2025-12-12' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for 6.19:

UAPI Changes:

  - panfrost: Add PANFROST_BO_SYNC ioctl
  - panthor: Add PANTHOR_BO_SYNC ioctl

Core Changes:

  - atomic: Add drm_device pointer to drm_private_obj
  - bridge: Introduce drm_bridge_unplug, drm_bridge_enter, and
    drm_bridge_exit
  - dma-buf: Improve sg_table debugging
  - dma-fence: Add new helpers, and use them when needed
  - dp_mst: Avoid out-of-bounds access with VCPI==0
  - gem: Reduce page table overhead with transparent huge pages
  - panic: Report invalid panic modes
  - sched: Add TODO entries
  - ttm: Various cleanups
  - vblank: Various refactoring and cleanups

  - Kconfig cleanups
  - Removed support for kdb

Driver Changes:

  - amdxdna: Fix race conditions at suspend, Improve handling of zero
    tail pointers, Fix cu_idx being overwritten during command setup
  - ast: Support imported cursor buffers
  -
  - panthor: Enable timestamp propagation, Multiple improvements and
    fixes to improve the overall robustness, notably of the scheduler.

  - panels:
    - panel-edp: Support for CSW MNE007QB3-1, AUO B140HAN06.4, AUO B140QAX01.H

Signed-off-by: Dave Airlie <airlied@redhat.com>

[airlied: fix mm conflict]
From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20251212-spectacular-agama-of-abracadabra-aaef32@penduick
2025-12-26 18:15:33 +10:00
Linus Torvalds 9448598b22 Linux 6.19-rc2 v6.19-rc2 2025-12-21 15:52:04 -08:00
Linus Torvalds 1123cfe8cf Merge tag 'coccinelle-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux
Pull Coccinelle fixes from Julia Lawall:
 "These fix a typo and make the coccicheck script more robust by
  ensuring that only compatible semantic patches are executed for the
  chosen mode"

* tag 'coccinelle-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  Coccinelle: pm_runtime: Fix typo in report message
  scripts: coccicheck: filter *.cocci files by MODE
2025-12-21 15:28:59 -08:00
Linus Torvalds 10a0e846d8 Merge tag 'input-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:

 - a quirk for i8042 to better handle another TUXEDO model

 - a quirk to atkbd to handle incorcet behavior of HONOR FMB-P internal
   keyboard

 - a definition for a new ABS_SND_PROFILE event

 - fixes to alps and lkkbd drivers to reliably shut down pending work on
   removal

 - a fix to apple_z2 driver tightening input report parsing

 - a fix for "off-by-one" error when validating config in ti_am335x_tsc
   driver

 - addition of CRKD Guitars device IDs to xpad driver.

* tag 'input-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ti_am335x_tsc - fix off-by-one error in wire_order validation
  Input: xpad - add support for CRKD Guitars
  Input: add ABS_SND_PROFILE
  Input: apple_z2 - fix reading incorrect reports after exiting sleep
  Input: alps - fix use-after-free bugs caused by dev3_register_work
  Input: i8042 - add TUXEDO InfinityBook Max Gen10 AMD to i8042 quirk table
  Input: atkbd - skip deactivate for HONOR FMB-P's internal keyboard
  Input: lkkbd - disable pending work before freeing device
2025-12-21 15:21:10 -08:00
Linus Torvalds 765b233a9b Merge tag 'i2c-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:

 - bcm, pxa, rcar: fix void-pointer-to-enum-cast warning

 - new hardware IDs / DT bindings for
    - Intel Nova Lake-S
    - Mobileye
    - Qualcomm SM8750

* tag 'i2c-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  dt-bindings: i2c: qcom-cci: Document SM8750 compatible
  i2c: i801: Add support for Intel Nova Lake-S
  dt-bindings: i2c: dw: Add Mobileye I2C controllers
  i2c: rcar: Fix Wvoid-pointer-to-enum-cast warning
  i2c: pxa: Fix Wvoid-pointer-to-enum-cast warning
  i2c: bcm-iproc: Fix Wvoid-pointer-to-enum-cast warning
2025-12-21 15:05:47 -08:00
Linus Torvalds 44087d3d46 Merge tag 'x86-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:

 - Fix FPU core dumps on certain CPU models

 - Fix htmldocs build warning

 - Export TLB tracing event name via header

 - Remove unused constant from <linux/mm_types.h>

 - Fix comments

 - Fix whitespace noise in documentation

 - Fix variadic structure's definition to un-confuse UBSAN

 - Fix posted MSI interrupts irq_retrigger() bug

 - Fix asm build failure with older GCC builds

* tag 'x86-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bug: Fix old GCC compile fails
  x86/msi: Make irq_retrigger() functional for posted MSI
  x86/platform/uv: Fix UBSAN array-index-out-of-bounds
  mm: Remove tlb_flush_reason::NR_TLB_FLUSH_REASONS from <linux/mm_types.h>
  x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h>
  x86/sgx: Remove unmatched quote in __sgx_encl_extend function comment
  x86/boot/Documentation: Fix whitespace noise in boot.rst
  x86/fpu: Fix FPU state core dump truncation on CPUs with no extended xfeatures
  x86/boot/Documentation: Fix htmldocs build warning due to malformed table in boot.rst
2025-12-21 14:41:29 -08:00
Linus Torvalds 610192c229 Merge tag 'irq-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
 "Fix IRQ thread affinity flags setup regression"

* tag 'irq-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Don't overwrite interrupt thread flags on setup
2025-12-21 14:34:13 -08:00
Thorsten Blum 52ad85fd33 Coccinelle: pm_runtime: Fix typo in report message
s/Unecessary/Unnecessary/

Reviewed-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
2025-12-21 21:04:52 +01:00
Songwei Chai 3766511de1 scripts: coccicheck: filter *.cocci files by MODE
Enhance the coccicheck script to filter *.cocci files based on the
specified MODE (e.g., report, patch). This ensures that only compatible
semantic patch files are executed, preventing errors such as:

    "virtual rule report not supported"

This error occurs when a .cocci file does not define a 'virtual <MODE>'
rule, yet is executed in that mode.

For example:

    make coccicheck M=drivers/hwtracing/coresight/ MODE=report

In this case, running "secs_to_jiffies.cocci" would trigger the error
because it lacks support for 'report' mode. With this change, such files
are skipped automatically, improving robustness and developer
experience.

Signed-off-by: Songwei Chai <quic_songchai@quicinc.com>
Reviewed-by: Julia Lawall <Julia.Lawall@inria.fr>
2025-12-21 21:04:45 +01:00
Linus Torvalds 9094662f67 Merge tag 'ata-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fix from Damien Le Moal:

 - Disable link power management (LPM) for a Seagate drive that is
   misbehaving when LPM is enabled

* tag 'ata-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ata: libata-core: Disable LPM on ST2000DM008-2FR102
2025-12-20 22:58:14 -08:00
Linus Torvalds 78f2a78e8d Merge tag 'spi-fix-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
 "A small collection of fixes for various SPI drivers, plus a relaxation
  of constraints in the DT for the DesignWare controller to reflect
  hardware that's been seen.

  There's several fixes for the Cadence QuadSPI driver since a fix
  during the last release made some existing issues with error handling
  during probe more readily visible"

* tag 'spi-fix-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: mt65xx: Use IRQF_ONESHOT with threaded IRQ
  spi: dt-bindings: snps,dw-abp-ssi: Allow up to 16 chip-selects
  spi: cadence-quadspi: Fix clock disable on probe failure path
  spi: cadence-quadspi: Add error logging for DMA request failure
  spi: fsl-cpm: Check length parity before switching to 16 bit mode
  spi: mpfs: Fix an error handling path in mpfs_spi_probe()
2025-12-20 16:54:42 -08:00
Eric Dumazet 91ff28ae6d x86/irqflags: Use ASM_OUTPUT_RM in native_save_fl()
clang is generating very inefficient code for native_save_fl() which is
used for local_irq_save() in critical spots.

Allowing the "pop %0" to use memory:

 1) forces the compiler to add annoying stack canaries when
    CONFIG_STACKPROTECTOR_STRONG=y in many places.

 2) Almost always is followed by an immediate "move memory,register"

One good example is _raw_spin_lock_irqsave, with 8 extra instructions

  ffffffff82067a30 <_raw_spin_lock_irqsave>:
  ffffffff82067a30:		...
  ffffffff82067a39:		53						push   %rbx

  // Three instructions to ajust the stack, read the per-cpu canary
  // and copy it to 8(%rsp)
  ffffffff82067a3a:		48 83 ec 10 			sub    $0x10,%rsp
  ffffffff82067a3e:		65 48 8b 05 da 15 45 02 mov    %gs:0x24515da(%rip),%rax 	   # <__stack_chk_guard>
  ffffffff82067a46:		48 89 44 24 08			mov    %rax,0x8(%rsp)

  ffffffff82067a4b:		9c						pushf

  // instead of pop %rbx, compiler uses 2 instructions.
  ffffffff82067a4c:		8f 04 24				pop    (%rsp)
  ffffffff82067a4f:		48 8b 1c 24 			mov    (%rsp),%rbx

  ffffffff82067a53:		fa						cli
  ffffffff82067a54:		b9 01 00 00 00			mov    $0x1,%ecx
  ffffffff82067a59:		31 c0					xor    %eax,%eax
  ffffffff82067a5b:		f0 0f b1 0f 			lock cmpxchg %ecx,(%rdi)
  ffffffff82067a5f:		75 1d					jne    ffffffff82067a7e <_raw_spin_lock_irqsave+0x4e>

  // three instructions to check the stack canary
  ffffffff82067a61:		65 48 8b 05 b7 15 45 02 mov    %gs:0x24515b7(%rip),%rax 	   # <__stack_chk_guard>
  ffffffff82067a69:		48 3b 44 24 08			cmp    0x8(%rsp),%rax
  ffffffff82067a6e:		75 17					jne    ffffffff82067a87

  ...

  // One extra instruction to adjust the stack.
  ffffffff82067a73:		48 83 c4 10 			add    $0x10,%rsp
  ...

  // One more instruction in case the stack was mangled.
  ffffffff82067a87:		e8 a4 35 ff ff			call   ffffffff8205b030 <__stack_chk_fail>

This patch changes nothing for gcc, but for clang saves ~20000 bytes of text
even though more functions are inlined.

  $ size vmlinux.gcc.before vmlinux.gcc.after vmlinux.clang.before vmlinux.clang.after
     text	   data		bss		dec		hex	filename
  45565821	25005462	4704800	75276083	47c9f33	vmlinux.gcc.before
  45565821	25005462	4704800	75276083	47c9f33	vmlinux.gcc.after
  45121072	24638617	5533040	75292729	47ce039	vmlinux.clang.before
  45093887	24638633	5536808	75269328	47c84d0	vmlinux.clang.after

  $ scripts/bloat-o-meter -t vmlinux.clang.before vmlinux.clang.after
  add/remove: 1/2 grow/shrink: 21/533 up/down: 2250/-22112 (-19862)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-12-20 14:47:12 -08:00
Eric Dumazet 4cc5373f2e clang: work around asm output constraint problems
Work around clang problems with "=rm" asm constraint.

clang seems to always chose the memory output, while it is almost
always the worst choice.

Add ASM_OUTPUT_RM so that we can replace "=rm" constraint
where it matters for clang, while not penalizing gcc.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-12-20 14:47:05 -08:00
Linus Torvalds f67e8a5e3e Merge tag 'xfs-fixes-6.19-rc2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
 "This contains a few fixes for zoned devices support, an UAF and a
  compiler warning, and some cleaning up"

* tag 'xfs-fixes-6.19-rc2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: fix the zoned RT growfs check for zone alignment
  xfs: validate that zoned RT devices are zone aligned
  xfs: fix XFS_ERRTAG_FORCE_ZERO_RANGE for zoned file system
  xfs: fix a memory leak in xfs_buf_item_init()
  xfs: fix stupid compiler warning
  xfs: fix a UAF problem in xattr repair
  xfs: ignore discard return value
2025-12-20 12:45:35 -08:00
Linus Torvalds f0ae3a5062 Merge tag 'hwmon-for-v6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:

 - ltc4282: Fix reset_history file permissions

 - ds620: Update broken Datasheet URL in driver documentation

 - tmp401: Fix overflow caused by default conversion rate value

 - ibmpex: Fix use-after-free in high/low store

 - dell-smm: Limit fan multiplier to avoid overflow

* tag 'hwmon-for-v6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (ltc4282): Fix reset_history file permissions
  hwmon: (DS620) Update broken Datasheet URL in driver documentation
  hwmon: (tmp401) fix overflow caused by default conversion rate value
  hwmon: (ibmpex) fix use-after-free in high/low store
  hwmon: (dell-smm) Limit fan multiplier to avoid overflow
2025-12-20 12:22:53 -08:00
Linus Torvalds 3ed22a356c Merge tag 'mmc-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:

 - sdhci-esdhc-imx: Fix build problem dependency

 - sdhci-of-arasan: Increase card-detect stable timeout to 2 seconds

 - sdhci-of-aspeed: Fix DT doc for missing properties

* tag 'mmc-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-esdhc-imx: add alternate ARCH_S32 dependency to Kconfig
  mmc: sdhci-of-arasan: Increase CD stable timeout to 2 seconds
  dt-bindings: mmc: sdhci-of-aspeed: Switch ref to sdhci-common.yaml
2025-12-20 12:18:32 -08:00
Linus Torvalds a0bdd554a8 Merge tag 'drm-fixes-2025-12-20' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
 "rc2 fixes for the week, mostly xe, with amdgpu as usual. Then a
  smattering of small fixes across the core/tests/panel and amdxdna.

  I expect things will be quiet for rc3/4 as teams take a break, and I'm
  travelling but will keep an eye on things.

  core:
   - fix gem handle leak on DRM_IOCTL_GEM_CHANGE_HANDLE

  tests:
   - add EDEADLK handling

  amdgpu:
   - Fix no_console_suspend handling
   - DCN 3.5.x seamless boot fixes
   - DP audio fix
   - Fix race in GPU recovery
   - SMU 14 OD fix

  amdkfd:
   - Event fix

  xe:
   - Limit num_syncs to prevent oversized kernel allocations
   - Disallow 0 OA property values
   - Disallow 0 EU stall property values
   - Fix kobject leak
   - Workaround
   - Loop variable reference fix
   - Fix a CONFIG corner-case incorrect number of argument
   - Skip reason prefix while emitting array
   - VF migration fix
   - Fix context in mei interrupt top half
   - Don't include the CCS metadata in the dma-buf sg-table
   - VF queueing recovery work fix
   - Increase TDF timeout
   - GT reset registers vs scheduler ordering fix
   - Adjust long-running workload timeslices
   - Always set OA_OAGLBCTXCTRL_COUNTER_RESUME
   - Fix a return value
   - Drop preempt-fences when destroying imported dma-bufs
   - Use usleep_range for accurate long-running workload timeslicing

  amdxdna:
   - don't load virtualized

  panel:
   - fix visionox-rm69299 Kconfig dependency
   - sony-td4353-jdi probing fix"

* tag 'drm-fixes-2025-12-20' of https://gitlab.freedesktop.org/drm/kernel: (34 commits)
  drm/xe: Use usleep_range for accurate long-running workload timeslicing
  drm/xe: Drop preempt-fences when destroying imported dma-bufs.
  drm/xe/eustall: Disallow 0 EU stall property values
  drm/xe/oa: Disallow 0 OA property values
  drm/xe/xe_sriov_vfio: Fix return value in xe_sriov_vfio_migration_supported()
  drm/xe/oa: Always set OAG_OAGLBCTXCTRL_COUNTER_RESUME
  drm/xe: Adjust long-running workload timeslices to reasonable values
  drm/xe/oa: Limit num_syncs to prevent oversized allocations
  drm/xe: Limit num_syncs to prevent oversized allocations
  drm/amdkfd: Fix improper NULL termination of queue restore SMI event string
  drm/amd/pm: restore SCLK settings after S0ix resume
  drm/amdgpu: fix a job->pasid access race in gpu recovery
  drm/amd/display: Fix DP no audio issue
  drm/amd/display: Fix scratch registers offsets for DCN351
  drm/amd/display: Fix scratch registers offsets for DCN35
  drm/amd: Resume the device in thaw() callback when console suspend is disabled
  drm/panel: visionox-rm69299: Depend on BACKLIGHT_CLASS_DEVICE
  accel/amdxdna: Block running under a hypervisor
  drm/panel: sony-td4353-jdi: Enable prepare_prev_first
  drm/xe: Restore engine registers before restarting schedulers after GT reset
  ...
2025-12-20 12:08:02 -08:00
Linus Torvalds fa084c35af Merge tag 'linux_kselftest-kunit-fixes-6.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit fixes from Shuah Khan:
 "Drop unused parameter from kunit_device_register_internal and make
  FAULT_TEST default to n when PANIC_ON_OOPS"

* tag 'linux_kselftest-kunit-fixes-6.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: make FAULT_TEST default to n when PANIC_ON_OOPS
  kunit: Drop unused parameter from kunit_device_register_internal
2025-12-20 11:59:06 -08:00
Linus Torvalds d571fe47bb Merge tag 'devicetree-fixes-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:

 - Fix warnings for Mediatek overlays not getting applied

 - Fix regression in handling elfcorehdr region

 - Fix creating cpufreq device on OPPv1 platforms

 - Add GE7800 GPU in Renesas R-Car V3U

 - Simplify dma-coherent property in TI display bindings

 - Allow "reg" in sprd,sc9860-clk binding

 - Update Linus Walleij's email

* tag 'devicetree-fixes-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  arm64: dts: mediatek: Apply mt8395-radxa DT overlay at build time
  arm64: dts: mediatek: mt7988: add dtbs with applied overlays for bpi-r4 (pro)
  arm64: dts: mediatek: mt7986: add dtbs with applied overlays for bpi-r3
  dt-bindings: Updates Linus Walleij's mail address
  dt-bindings: gpu: img,powervr-rogue: Document GE7800 GPU in Renesas R-Car V3U
  cpufreq: dt-platdev: Fix creating device on OPPv1 platforms
  dt-bindings: clock: sprd,sc9860-clk: Allow "reg" for gate clocks
  dt-bindings: display/ti: Simplify dma-coherent property
  arm64: kdump: Fix elfcorehdr overlap caused by reserved memory processing reorder
2025-12-20 11:49:49 -08:00
Linus Torvalds a688362b19 Merge tag 'mips-fixes_6.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:

 - Fix build error for Alchemy

 - Fix reference leak

* tag 'mips-fixes_6.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Fix a reference leak bug in ip22_check_gio()
  MIPS: Alchemy: Remove bogus static/inline specifiers
2025-12-20 11:40:51 -08:00
Linus Torvalds 18dfd1cbf6 Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
 "Two left-over updates that could not go into -rc1 due to conflicts
  with other series:

   - Simplify checks in arch_kfence_init_pool() since
     force_pte_mapping() already takes BBML2-noabort (break-before-make
     Level 2 with no aborts generated) into account

   - Remove unneeded SVE/SME fallback preserve/store handling in the
     arm64 EFI. With the recent updates, the fallback path is only taken
     for EFI runtime calls from hardirq or NMI contexts. In practice,
     this only happens under panic/oops/emergency_restart() and no
     restoring of the user state expected.

     There's a corresponding lkdtm update to trigger a BUG() or panic()
     from hardirq context together with a fixup not to confuse
     clang/objtool about the control flow

  GCS (guarded control stacks) fix: flush the GCS locking state on exec,
  otherwise the new task will not be able to enable GCS (locked as
  disabled)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop
  arm64/gcs: Flush the GCS locking state on exec
  arm64/efi: Remove unneeded SVE/SME fallback preserve/store handling
  lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context
  arm64: mm: Simplify check in arch_kfence_init_pool()
2025-12-20 11:34:37 -08:00
Linus Torvalds 072c0b4f0f Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull x86 kvm fixes from Paolo Bonzini:
 "x86 fixes.  Everyone else is already in holiday mood apparently.

   - Add a missing 'break' to fix param parsing in the rseq selftest

   - Apply runtime updates to the _current_ CPUID when userspace is
     setting CPUID, e.g. as part of vCPU hotplug, to fix a false
     positive and to avoid dropping the pending update

   - Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot, as
     it's not supported by KVM and leads to a use-after-free due to KVM
     failing to unbind the memslot from the previously-associated
     guest_memfd instance

   - Harden against similar KVM_MEM_GUEST_MEMFD goofs, and prepare for
     supporting flags-only changes on KVM_MEM_GUEST_MEMFD memlslots,
     e.g. for dirty logging

   - Set exit_code[63:32] to -1 (all 0xffs) when synthesizing a nested
     SVM_EXIT_ERR (a.k.a. VMEXIT_INVALID) #VMEXIT, as VMEXIT_INVALID is
     defined as -1ull (a 64-bit value)

   - Update SVI when activating APICv to fix a bug where a
     post-activation EOI for an in-service IRQ would effective be lost
     due to SVI being stale

   - Immediately refresh APICv controls (if necessary) on a nested
     VM-Exit instead of deferring the update via KVM_REQ_APICV_UPDATE,
     as the request is effectively ignored because KVM thinks the vCPU
     already has the correct APICv settings"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: Immediately refresh APICv controls as needed on nested VM-Exit
  KVM: VMX: Update SVI during runtime APICv activation
  KVM: nSVM: Set exit_code_hi to -1 when synthesizing SVM_EXIT_ERR (failed VMRUN)
  KVM: nSVM: Clear exit_code_hi in VMCB when synthesizing nested VM-Exits
  KVM: Harden and prepare for modifying existing guest_memfd memslots
  KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot
  KVM: selftests: Add a CPUID testcase for KVM_SET_CPUID2 with runtime updates
  KVM: x86: Apply runtime updates to current CPUID during KVM_SET_CPUID{,2}
  KVM: selftests: Add missing "break" in rseq_test's param parsing
2025-12-20 11:31:37 -08:00
Linus Torvalds 255a918a94 Merge tag 'for-linus-6.19-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
 "Just a single patch fixing a sparse warning"

* tag 'for-linus-6.19-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Fix sparse warning in enlighten_pv.c
2025-12-20 11:29:32 -08:00
Linus Torvalds 44f9a00a44 Merge tag 'slab-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fix from Vlastimil Babka:

 - A stable fix for a missing tag reset that can happen in
   kfree_nolock() with KASAN+SLUB_TINY configs (Deepanshu Kartikey)

* tag 'slab-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slub: reset KASAN tag in defer_free() before accessing freed memory
2025-12-20 11:24:42 -08:00
Linus Torvalds e4a3d52ab9 Merge tag 'iommu-fixes-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:

 - iommupt: Fix an oops found by syzcaller in the new generic
   IO-page-table code.

 - AMD-Vi: Fix IO_PAGE_FAULTs in kdump kernels triggered by re-using
   domain-ids from previous kernel.

* tag 'iommu-fixes-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
  amd/iommu: Make protection domain ID functions non-static
  amd/iommu: Preserve domain ids inside the kdump kernel
  iommupt: Return ERR_PTR from _table_alloc()
2025-12-20 11:18:32 -08:00
Linus Torvalds d8ba32c5a4 Merge tag 'block-6.19-20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:

 - ublk selftests for missing coverage

 - two fixes for the block integrity code

 - fix for the newly added newly added PR read keys ioctl, limiting the
   memory that can be allocated

 - work around for a deadlock that can occur with ublk, where partition
   scanning ends up recursing back into file closure, which needs the
   same mutex grabbed. Not the prettiest thing in the world, but an
   acceptable work-around until we can eliminate the reliance on
   disk->open_mutex for this

 - fix for a race between enabling writeback throttling and new IO
   submissions

 - move a bit of bio flag handling code. No changes, but needed for a
   patchset for a future kernel

 - fix for an init time id leak failure in rnbd

 - loop/zloop state check fix

* tag 'block-6.19-20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  block: validate interval_exp integrity limit
  block: validate pi_offset integrity limit
  block: rnbd-clt: Fix leaked ID in init_dev()
  ublk: fix deadlock when reading partition table
  block: add allocation size check in blkdev_pr_read_keys()
  Documentation: admin-guide: blockdev: replace zone_capacity with zone_capacity_mb when creating devices
  zloop: use READ_ONCE() to read lo->lo_state in queue_rq path
  loop: use READ_ONCE() to read lo->lo_state without locking
  block: fix race between wbt_enable_default and IO submission
  selftests: ublk: add user copy test cases
  selftests: ublk: add support for user copy to kublk
  selftests: ublk: forbid multiple data copy modes
  selftests: ublk: don't share backing files between ublk servers
  selftests: ublk: use auto_zc for PER_IO_DAEMON tests in stress_04
  selftests: ublk: fix fio arguments in run_io_and_recover()
  selftests: ublk: remove unused ios map in seq_io.bt
  selftests: ublk: correct last_rw map type in seq_io.bt
  selftests: ublk: fix overflow in ublk_queue_auto_zc_fallback()
  block: move around bio flagging helpers
2025-12-20 09:48:56 -08:00
Linus Torvalds d245b2e53e Merge tag 'io_uring-6.19-20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fix from Jens Axboe:
 "Just a single fix this week, for an issue with the calculation of the
  number of segments in the ublk kbuf import path"

* tag 'io_uring-6.19-20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: fix nr_segs calculation in io_import_kbuf
2025-12-20 09:38:56 -08:00
Matthew Brost 844758bd99 drm/xe: Print GuC queue submission state on engine reset
Print the GuC queue submission state when an engine reset occurs, as
this provides clues about the cause of the reset.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251218224546.4057424-1-matthew.brost@intel.com
2025-12-19 11:45:29 -08:00
Matthew Brost 651065dca3 drm/xe: Increase log level for unhandled page faults
Set the kernel log level for unhandled page faults to match the log
level (info) for engine resets. Currently, dmesg output can be confusing
because it shows an engine reset without indicating the page fault that
caused it. Without this change, the GuC log must be examined to
determine the source of the engine reset.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20251218223745.4045207-1-matthew.brost@intel.com
2025-12-19 11:45:28 -08:00
Ville Syrjälä 35ec71285c drm/i915/pc8: Add parent interface for PC8 forcewake tricks
We use forcewake to prevent the SoC from actually entering
PC8 while performing the PC8 disable sequence. Hide that
behind a new parent interface to eliminate the naked
forcewake/uncore usage from the display power code.

v2: Mark the interface optional and warn if
    someone calls it when not provided (Jani)
    Include the header to make sure the extern
    declaration matches the definition (Jani)
v3: Rebase due to shuffling

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251218182052.18756-1-ville.syrjala@linux.intel.com
2025-12-19 21:28:48 +02:00
Gustavo Sousa 9236cf0ade drm/i915/cx0: Toggle powerdown states for C10 on HDMI
A new step has been added to Bspec with respect to the C10 PHY, which
instructs the driver to toggle powerdown value for boths PHY lanes to P0
and then P2 when driving an HDMI connector. This update in the Bspec
reflects the changes required by Wa_14026084006, so document it.

Note that, unlike other display workarounds, this one is actually tied
to the C10 PHY and not to a specific display IP.  As such, let's just
document it in intel_cx0_phy.c instead of adding it to
intel_display_wa.c.

Bspec: 64568, 74489
Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patch.msgid.link/20251216-wa_14026084006-c10-hdmi-toggle-powerdown-v1-2-08677b03e2f1@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
2025-12-19 14:00:26 -03:00
Gustavo Sousa c954d3b517 drm/i915/cx0: Use a more accurate message for powerdown change failure
We do not use the function intel_cx0_powerdown_change_sequence()
exclusively to take the PHY out of reset, hence the warning message on
failure is misleading.  Furthermore, in an upcoming change, we will also
use that function to implement a new C10 PHY workaround.

Use a more accurate message by saying that we failed to change the
powerdown state.

Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patch.msgid.link/20251216-wa_14026084006-c10-hdmi-toggle-powerdown-v1-1-08677b03e2f1@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
2025-12-19 14:00:26 -03:00
Nuno Sá b3db91c3bf hwmon: (ltc4282): Fix reset_history file permissions
The reset_history attributes are write only. Hence don't report them as
readable just to return -EOPNOTSUPP later on.

Fixes: cbc29538db ("hwmon: Add driver for LTC4282")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20251219-ltc4282-fix-reset-history-v1-1-8eab974c124b@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-12-19 08:44:22 -08:00
Riana Tauro 13fe9fa7f4 drm/xe/xe_survivability: Add index bound check
Fix static analysis tool reported issue. Add index bound check before
accessing info array to prevent out of bound.

Fixes: f4e9fc967a ("drm/xe/xe_survivability: Redesign survivability mode")
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251219105224.871930-6-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2025-12-19 11:01:57 -05:00
Riana Tauro 3d50c69c58 drm/xe/xe_survivability: Use static for survivability info attributes
Fix sparse warnings. Use static for survivability info attributes.

Fixes: f4e9fc967a ("drm/xe/xe_survivability: Redesign survivability mode")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512101919.G12cuhBJ-lkp@intel.com/
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251219105224.871930-5-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2025-12-19 11:01:57 -05:00
Madhur Kumar af90706f0e drm/xe/pmu: Replace sprintf() with sysfs_emit()
Replace sprintf() calls with sysfs_emit() to follow current kernel
coding standards.

sysfs_emit() is the preferred method for formatting sysfs output as it
provides better bounds checking and is more secure.

Signed-off-by: Madhur Kumar <madhurkumar004@gmail.com>
Link: https://patch.msgid.link/20251214083659.2412218-1-madhurkumar004@gmail.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Rodrigo adjusted commit message while pushing it]
2025-12-19 10:30:31 -05:00
Rob Herring (Arm) ce7b1d5860 arm64: dts: mediatek: Apply mt8395-radxa DT overlay at build time
It's a requirement that DT overlays be applied at build time in order to
validate them as overlays are not validated on their own.

Add missing target for mt8395-radxa hd panel overlay.

Fixes: 4c8ff61199 ("arm64: dts: mediatek: mt8395-radxa-nio-12l: Add Radxa 8 HD panel")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: AngeloGioacchino Del Regno <angelogiaocchino.delregno@collabora.com>
Link: https://patch.msgid.link/20251205215940.19287-1-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-12-19 09:18:27 -06:00
Frank Wunderlich 0773bc6ab7 arm64: dts: mediatek: mt7988: add dtbs with applied overlays for bpi-r4 (pro)
Build devicetree binaries for testing overlays and providing users
full dtb without using overlays for Bananapi R4 (pro) variants.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://patch.msgid.link/20251119175124.48947-3-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-12-19 09:18:18 -06:00
Frank Wunderlich 987697749d arm64: dts: mediatek: mt7986: add dtbs with applied overlays for bpi-r3
Build devicetree binaries for testing overlays and providing users
full dtb without using overlays.

Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Fixes: a58c368067 ("arm64: dts: mediatek: mt7988a-bpi-r4pro: Add mmc  overlays")
Fixes: dec929e61a ("arm64: dts: mediatek: mt7988a-bpi-r4-pro: Add PCIe  overlays")
Fixes: 714a80ced0 ("arm64: dts: mediatek: mt7988a-bpi-r4: Add dt  overlays for sd + emmc")
Fixes: 312189ebb8 ("arm64: dts: mt7986: add overlay for SATA power  socket on BPI-R3")
Fixes: 8e01fb15b8 ("arm64: dts: mt7986: add Bananapi R3")
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251119175124.48947-2-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-12-19 09:18:18 -06:00
Catalin Marinas f4ea8e05f2 lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop
Since commit eb972eab07 ("lkdtm/bugs: Add cases for BUG and PANIC
occurring in hardirq context"), building with clang for x86_64 results
in the following warnings:

vmlinux.o: warning: objtool: lkdtm_PANIC_IN_HARDIRQ(): unexpected end of section .text.lkdtm_PANIC_IN_HARDIRQ
vmlinux.o: warning: objtool: lkdtm_BUG_IN_HARDIRQ(): unexpected end of section .text.lkdtm_BUG_IN_HARDIRQ

caused by busy "while (wait_for_...);" loops. Add READ_ONCE() and
cpu_relax() to better indicate the intention and avoid any unwanted
compiler optimisations.

Fixes: eb972eab07 ("lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512190111.jxFSqxUH-lkp@intel.com/
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-12-19 15:09:09 +00:00
Imre Deak 338465490c drm/i915/dp: Fail state computation for invalid DSC source input BPP values
There is no reason to accept an invalid minimum/maximum DSC source input
BPP value (i.e a minimum DSC input BPP value above the maximum pipe BPP
or a maximum DSC input BPP value below the minimum pipe BPP value), fail
the state computation in these cases.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-17-imre.deak@intel.com
2025-12-19 16:46:41 +02:00
Imre Deak a63bbb8ddd drm/i915/dp: Fail state computation for invalid max sink compressed BPP value
There is no reason to accept an invalid maximum sink compressed BPP
value (i.e. 0), fail the state computation in this case.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-16-imre.deak@intel.com
2025-12-19 16:46:41 +02:00
Imre Deak 5c2d799491 drm/i915/dp: Fail state computation for invalid max throughput BPP value
There is no reason to accept a minimum/maximum link BPP value above the
maximum throughput BPP value, fail the state computation in this case.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-15-imre.deak@intel.com
2025-12-19 16:46:41 +02:00
Imre Deak 2018e29176 drm/i915/dp: Fail state computation for invalid min/max link BPP values
Make sure that state computation fails if the minimum/maximum link BPP
values got invalid as a result of limiting both of these values
separately to the corresponding source/sink capability limits.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-14-imre.deak@intel.com
2025-12-19 16:46:41 +02:00
Imre Deak 3755e200bc drm/i915/dp: Account with pipe joiner max compressed BPP limit for DP-MST and eDP
The pipe joiner maximum compressed BPP must be limited based on the pipe
joiner memory size and BW, do that for all DP outputs by adjusting the
max compressed BPP value already in
intel_dp_compute_config_link_bpp_limits() (which is used by all output
types).

This way the BPP doesn't need to be adjusted in
dsc_compute_compressed_bpp() (called for DP-SST after the above limits
were computed already), so remove the adjustment from there.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-13-imre.deak@intel.com
2025-12-19 16:46:40 +02:00
Imre Deak 260aef187f drm/i915/dp: Account with DSC BW overhead for compressed DP-SST stream BW
A DSC compressed stream requires FEC (except for eDP), which has a BW
overhead on non-UHBR links that must be accounted for explicitly. Do
that during computing the required BW.

Note that the overhead doesn't need to be accounted for on UHBR links
where FEC is always enabled and so the corresponding overhead is part of
the channel coding efficiency instead (i.e. the overhead is part of the
available vs. the required BW).

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-12-imre.deak@intel.com
2025-12-19 16:46:40 +02:00
Imre Deak e25b6f1334 drm/i915/dp: Account with MST, SSC BW overhead for uncompressed DP-MST stream BW
On MST links the symbol alignment and SSC have a BW overhead, which
should be accounted for when calculating the required stream BW, do so
during mode validation for an uncompressed stream.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251215192357.172201-11-imre.deak@intel.com
2025-12-19 16:46:40 +02:00