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5084 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Guangshuo Li
|
f4fae975db |
drm/msm/hdmi_phy: fix runtime PM cleanup on probe failure
msm_hdmi_phy_probe() enables runtime PM before enabling the PHY
resources and initializing the PLL, but failures from either operation
return without calling the matching pm_runtime_disable().
The remove path disables runtime PM, but it is not called when probe
fails. As a result, runtime PM remains enabled after an unsuccessful
probe.
Route failures after pm_runtime_enable() through a common error path
and disable runtime PM before returning.
This issue was found by manual code inspection.
Fixes:
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Dmitry Baryshkov
|
2028280686 |
drm/msm/dsi: round the byte clock rate after reparenting to the PHY PLL
DSI 6G v2.9 hosts (SM8650, SM8750, Kaanapali, etc.) reparent the byte and
pixel RCGs to the DSI PHY PLL at runtime from
dsi_link_clk_set_rate_6g_v2_9(), after the PHY has been enabled. However
dsi_calc_clk_rate_6g() runs earlier, in order to compute the bit clock
request for the PHY. At that point the byte RCG still has its reset
parent (XO), so clk_round_rate() returns a bogus rate, which then ends up
in the PHY bit clock request and the PLL gets programmed to a wrong
frequency, breaking the panel.
Move the rounding to dsi_link_clk_set_rate_6g(), which is called after
the RCGs have been reparented to the PLL. Storing the rounded rate at
this point still makes later link_clk_set_rate() calls no-ops in the
CCF. Derive the byte interface clock rate from the rounded byte clock
rate, otherwise it would keep requesting the idealized rate and
retrigger the PLL on every transfer.
Reported-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reported-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Fixes:
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Saim Shujah
|
a5b5cc9099 |
drm/msm/dpu: clear pending peripheral flush state
dpu_hw_ctl_clear_pending_flush() resets the cached per-block state after a
flush transaction, but misses pending_periph_flush_mask.
The peripheral flush updater accumulates interface bits in this mask. A
later transaction which sets the top-level peripheral flush bit can write
stale interface bits to CTL_PERIPH_FLUSH together with the current state.
Peripheral flush support was added after the helper started clearing every
individual pending flush mask. Clear the peripheral mask together with the
other cached child masks.
Fixes:
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William Bright
|
58995b11df |
drm/msm/dp: fix link bandwidth check when wide bus is enabled
msm_dp_display_mode_valid() halves the pixel clock when either YUV420 or
wide bus is in use, then uses that halved value both for the controller
pixel clock limit and for the DP link bandwidth check.
Only YUV420 halves the data crossing the link. Wide bus widens the
internal DPU to DP interface to two pixels per clock, halving the
controller clock. Every pixel is still transmitted, so the link
bandwidth requirement remains.
As a result, modes needing up to twice the available link bandwidth pass
validation. On the IMDT QCS8550 SBC (rev5 with CYPD6125), where DP runs
over USB-C alt mode where only two lanes are available, 3840x2160@60 was
accepted despite needing 9.6 Gbps against the 8.64 Gbps the link can
carry.
Use a separate link pixel clock that is only halved for YUV420 for the
bandwidth calculation, leaving the wide bus halving to apply solely to
the controller pixel clock limit. With this, 4k@60 is correctly rejected
and 4k@30 selected instead.
Fixes:
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Guangshuo Li
|
6fbbf1e152 |
drm/msm/adreno: fix autosuspend cleanup during teardown
adreno_gpu_init() calls pm_runtime_use_autosuspend(), but
adreno_gpu_cleanup() does not call the matching
pm_runtime_dont_use_autosuspend() during teardown.
If the autosuspend delay is set to a negative value while autosuspend
is enabled, the runtime PM core increments usage_count to prevent
runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
during teardown, this reference is not dropped and usage_count remains
unbalanced.
The documentation for pm_runtime_use_autosuspend() also notes that it
is important to undo it with pm_runtime_dont_use_autosuspend() at
driver exit time, unless runtime PM was initially enabled with
devm_pm_runtime_enable().
Add the missing pm_runtime_dont_use_autosuspend() call to
adreno_gpu_cleanup().
This issue was found by manual code inspection.
Fixes:
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Jesse Casco
|
e249a6e2a1 |
drm/msm/dp: skip PUSH_IDLE when the link was never enabled
msm_dp_display_atomic_enable() returns early when link training fails,
leaving ->power_on false and the main link down.
msm_dp_display_atomic_disable() nevertheless writes DP_STATE_CTRL_PUSH_IDLE
and waits for an idle-pattern completion that cannot arrive, so every failed
enable is followed by "PUSH_IDLE pattern timedout".
Every other step of the teardown is already gated on that flag:
msm_dp_display_disable(), called from .atomic_post_disable(), returns early
on !power_on. The PUSH_IDLE write is the only one that is not, so the
controller's runtime-PM reference is then dropped without the link having
been taken down.
On glymur (Snapdragon X2 Elite) the consequence is not a warning. The SoC
does not survive it: TrustZone force-stops the SOCCP and ADSP remote
processors and the machine resets silently about 50 ms later, with no oops
and no panic. On an ASUS Zenbook A16 (UX3607OA), whose eDP panel does not
currently train, this reproduces without any compositor or GPU involvement:
# eDP enable has already failed with "Failed link training (rc=-104)"
echo 1 > /sys/class/graphics/fb0/blank
[535.645455] === marker ===
[535.694833] qcom_q6v5_pas d00000.remoteproc: fatal error received: \
sys_m_smsm.c:512:TZ force stop
[535.694875] remoteproc remoteproc0: crash detected in soccp: type fatal error
[535.728857] qcom_q6v5_pas 6800000.remoteproc: fatal error received: \
sys_m_smsm.c:783:err fatal notification received from TZ
<SoC reset>
Gate the PUSH_IDLE write on ->power_on so the disable path is consistent
with the rest of the teardown. With this applied the same sequence is
harmless and the machine stays up; without it, it resets every time.
The unconditional write dates back to the original DP driver
(
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Dmitry Baryshkov
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ea9dadeac7 |
drm/msm: mark the fbdev framebuffer as system memory
msm_fbdev_driver_fbdev_probe() points screen_buffer at a kernel virtual mapping of the GEM object and uses the deferred sysmem fb ops, but never sets FBINFO_VIRTFB. The framebuffer core then assumes the memory is not in the virtual address space and warns on the first console draw: fb0: sys_fillrect: framebuffer is not in virtual address space. The drm_fbdev_dma, drm_fbdev_shmem and drm_fbdev_ttm helpers all set the flag for system memory. Do the same here. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Assisted-by: Claude:claude-opus-5 Patchwork: https://patchwork.freedesktop.org/patch/743293/ Link: https://lore.kernel.org/r/20260730-drm-msm-fbinfo-virt-v1-1-a27099a6dc58@oss.qualcomm.com Acked-by: Rob Clark <robin.clark@oss.qualcomm.com> # on IRC Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
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Rob Clark
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ba970587a0 |
drm/msm/a6xx+: Increase GMU FW init timeout
We were using 10ms, kgsl uses 100ms. In practice it is usually takes less than 10ms, but very occasionally goes a bit above 10ms, leading to a "GMU firmware inialization timed out", from which point things go south. There are probably some things that could be done to speed up init, like increasing GMU freq. But to be safe, increase the timeout to match kgsl. Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Reviewed-by: Akhil P Oommen <akhilpo@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/753014/ Message-ID: <20260912150915.28700-1-robin.clark@oss.qualcomm.com> |
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Neil Armstrong
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a2b6583798 |
drm/msm/a6xx: Use CX AO Counter register for timestamp on a750 GPUs
The a750 uses the GMU CX AO Counters instead of the GMU_ALWAYS_ON_COUNTER register on A6xx and other A7xx GPUs, use it when running a A750 GPU. The GMU_ALWAYS_ON_COUNTER at offset 0x1f888 doesn't seem to exist on the SM8650 A750 GMU and returns 0, but the CX AO counter at offset 0x1f880 returns some proper timestamp data. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/752235/ Message-ID: <20260909-topic-sm8650-gmu-a750-timestamp-reg-v2-2-091d74958951@linaro.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> |
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Neil Armstrong
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ed9ad3d418 |
drm/msm/a6xx: Add CX AO Counter registers used for a750 GPUs
The a750 uses the CX AO Counters instead of the GMU_ALWAYS_ON_COUNTER register on A6xx and other A7xx GPUs. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/752234/ Message-ID: <20260909-topic-sm8650-gmu-a750-timestamp-reg-v2-1-091d74958951@linaro.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> |
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George Emmanuel Thomas
|
3163cd7253 |
drm/msm: remove stale perf counter XML TODO
The adreno_perfcntrs macro already takes the XML file stem as its second argument, allowing each perf counter JSON file to select the appropriate register XML. The a2xx and a5xx entries already pass their respective XML file stems. Remove the stale TODO comment. Signed-off-by: George Emmanuel Thomas <georgeemmanuelthomas@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/746745/ Message-ID: <20260815164335.158958-1-georgeemmanuelthomas@gmail.com> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> |
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Jonghyuk Kim(MalHyuk)
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01c8d1f385 |
drm/msm: RCU-free the scheduler-containing ring and VM objects
Both struct msm_ringbuffer and struct msm_gem_vm embed a struct drm_gpu_scheduler. msm_ringbuffer_destroy() and the VM free callback msm_gem_vm_free() call drm_sched_fini() on the embedded scheduler and then free the containing object with plain kfree(). drm_sched_fence_get_timeline_name() returns fence->sched->name, and the scheduler fence keeps a .release callback so it is not ops-detached on signalling. A finished fence exported to userspace (the submit out-fence, or a VM_BIND fence, via sync_file / drm_syncobj) keeps pointing at the embedded scheduler after the ring/VM is freed, so a later get_timeline_name() -- reachable unprivileged through SYNC_IOC_FILE_INFO -- dereferences freed slab memory (KASAN slab-use-after-free read). Per the dma-fence lifetime contract the exporter must keep the data backing a signalled fence alive for an RCU grace period. Free the scheduler-containing objects with kfree_rcu() instead of kfree(). Fixes: |
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Karl Mehltretter
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8061ee61b9 |
drm/msm/adreno: Fix the skip_gpu parameter description
The module parameter is skip_gpu, but its MODULE_PARM_DESC() names
no_gpu, so modinfo describes a parameter that does not exist and shows
no description for the real one.
Use the parameter name in the description.
Fixes:
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Karl Mehltretter
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adf5967331 |
drm/msm: Fix the separate_gpu_kms parameter description
The module parameter is separate_gpu_kms, but its MODULE_PARM_DESC()
names separate_gpu_drm, so modinfo describes a parameter that does not
exist and shows no description for the real one.
Use the parameter name in the description.
Fixes:
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Paul Hollinsky
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b7c0f8436f |
drm/msm/adreno: Only check for PAS when a zap shader is present
Commit |
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Linus Torvalds
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a99d741df7 |
drm next/fixes for 7.3-rc1
core: - use drm_warn instead of warn msm: - Bindings: - Added Shikra support - Document a840, a704, a722 - Core: - Use drm_client buffers for fbdev emulation - teardown fixes - ARM32 DMA fixup - Remove objects from evict list when re-validated - Bunch of corner case and error path fixes - DPU: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Fixed SSPP offsets of Kaanapali - DP: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Cleaned up core code in preparation for MST support - Fixed prepare() to let Pipewire continue in case of the unplugged cable - GPU: - Add support for a704 - Add support for a722 - HDMI: - Simplifed register access amdgpu: - eGPU fixes - Runtime PM fix - UserQ fixes - Backlight fix - Discovery sysfs fix - Reset handling fixes - Buffer func handling fix for xgmi - VCN boundary check fix - DC lut handling fixes - MES fixes - UVD fix - VCE 3 fix - Enforce isolation fix - HPD fix for VGA/LVDS - DML fix - DCN 6 fixes - DC gpu reset fix amdkfd: - Fix return value - CU occupancy for GFX 11 - CU occupancy for GFX 12/12.1 - Queue bounds checking fix - SVM fixes - CRIU bounds checking fix radeon: - iMac display fix xe: - error message cleanups - i2c global register definitions as dependency for xe/i2c fixes - Media workardound - Add CCS to gt_idle debugfs print - Page fault related fix - i2c related fixes - System Controller mailbox bit fix -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmqR+2wACgkQDHTzWXnE hr5VPRAAhJpCnUEOUnhiBRfQB3lqHuKV4N9XQGVoaAZHYLxNkZD6I99ScpIznEr9 sHG0ViBqz2PHyM2XoJzPZDzm8Us0moVUMMdV56IH7h11l8E7Az2Sd/Ji+AQvZEBT /qh9Py0/fjibfDm0ueMROFRhuD8RA2sJqzkGMZUBvErh+zmEQvkIDkIT6A5RpHD8 B3XEGN+UCxPBzCnKNixyNDgY2i4ipFAe0MDj9+Mh0b9BM9BoV8+Eb7sjkBz+ROMH tl57Mjjd37FaYM9MgtEt9m7eOBf266V9Xb9tbIfqShwO1aZa0Vfzuih/3Ck53Nwc VkwepP7NHZZKFHIxFgcRCVjzyA3HpZJmLot8YYOyZDJOG6KKp2X0ZUFBog5Uiv8o 7exd95FLUtIsnUtmLxlermOYJwrokgcVoigcalhLCB2+KZ5/BznutzcCSvrd8vI2 LzEGnLMgzuEKeOmiWZjagID51TYwHfPogULUlwWT4XB62dKih7/uselCObj4m/Lc kRSbiXWz1pxisfiFRsK2GECwsbEb/8qOYgSOQBgppuPbSWpX+2P4IApomRBesQ8E Db+i6hptauOwT0/1ZBo8gkOfb0XIWsjg9iV6pVuUIS80hOlr7Zj1MR7mMrWgL0nM Chs4/Nq8jWU1ESbmKPBINIXCGOGuev4lJO/pBjfySLpTUhWOQcw= =wbEZ -----END PGP SIGNATURE----- Merge tag 'drm-next-2026-08-29' of https://gitlab.freedesktop.org/drm/kernel Pull more drm updates from Dave Airlie: "As mentioned last week, an msm pull request fell down the side of the couch or whatever the email equivalent of that is. This has the msm next stuff + the usual fixes for amd/intel. core: - use drm_warn instead of warn msm: - Bindings: - Added Shikra support - Document a840, a704, a722 - Core: - Use drm_client buffers for fbdev emulation - teardown fixes - ARM32 DMA fixup - Remove objects from evict list when re-validated - Bunch of corner case and error path fixes - DPU: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Fixed SSPP offsets of Kaanapali - DP: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Cleaned up core code in preparation for MST support - Fixed prepare() to let Pipewire continue in case of the unplugged cable - GPU: - Add support for a704 - Add support for a722 - HDMI: - Simplifed register access amdgpu: - eGPU fixes - Runtime PM fix - UserQ fixes - Backlight fix - Discovery sysfs fix - Reset handling fixes - Buffer func handling fix for xgmi - VCN boundary check fix - DC lut handling fixes - MES fixes - UVD fix - VCE 3 fix - Enforce isolation fix - HPD fix for VGA/LVDS - DML fix - DCN 6 fixes - DC gpu reset fix amdkfd: - Fix return value - CU occupancy for GFX 11 - CU occupancy for GFX 12/12.1 - Queue bounds checking fix - SVM fixes - CRIU bounds checking fix radeon: - iMac display fix xe: - error message cleanups - i2c global register definitions as dependency for xe/i2c fixes - Media workardound - Add CCS to gt_idle debugfs print - Page fault related fix - i2c related fixes - System Controller mailbox bit fix" * tag 'drm-next-2026-08-29' of https://gitlab.freedesktop.org/drm/kernel: (121 commits) drm/xe/sysctrl: Read mailbox phase bit from hardware drm/xe/i2c: Keep the i2c controller always enabled drm/xe/i2c: Fix the interrupt handling i2c: designware: Global register definitions drm/xe: Reject page faults from non-fault-mode scratch VMs drm/xe/xe_gt_idle: Add CCS to the powergating info print drm/xe: Do not apply WA 14025883347 to media 3503 drm/amd/display: fix dc_lock leak on GPU reset error paths drm/amd/display: Fix redundant GPUVMEnable checks in dcn6 flip schedule drm/amd/display: Fix wrong bytes-per-pixel value for dml2_422_packed_10 drm/amdkfd: guard against NULL restore_mqd in CRIU queue restore drm/amdgpu/userq: fix lock missing for userq fence error set drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram drm/amdkfd: Fix error path at svm_migrate_copy_to_ram drm/amd/display: Log details when failing to register HPD IRQ drm/amd/display: Fix HPD consideration for VGA/LVDS connectors on DCE drm/amdgpu: clamp the isolation index for rings outside a partition drm/amdkfd: Reject zero-sized AQL queue allocations after size halving drm/amdgpu: Fix VCE 3 ring align_mask drm/kfd: Add CU occupancy support to GFX12.1 ... |
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Dave Airlie
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e91d58cb2f |
Merge tag 'drm-msm-next-2026-08-01' of https://gitlab.freedesktop.org/drm/msm into drm-next
Changes for v7.3 Bindings: - Added Shikra support - Document a840, a704, a722 Core: - Use drm_client buffers for fbdev emulation - teardown fixes - ARM32 DMA fixup - Remove objects from evict list when re-validated - Bunch of corner case and error path fixes DPU: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Fixed SSPP offsets of Kaanapali DP: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Cleaned up core code in preparation for MST support - Fixed prepare() to let Pipewire continue in case of the unplugged cable GPU: - Add support for a704 - Add support for a722 HDMI: - Simplifed register access Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rob Clark <rob.clark@oss.qualcomm.com> Link: https://patch.msgid.link/CACSVV02Kp=J+w_RjEJbBbQnBYRb+SWdwMvVbCaAL70bq9EBagQ@mail.gmail.com |
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Linus Torvalds
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4e69c1856b |
drm for 7.3-rc1
perf: - export perf_allow_ APIs for xe udmabuf: - remove default size limit of 64MB rust: - i/o rework (signed tag from driver-core tree) - add registration guard and registration data - fix unbounded lifetimes in ioctl handler args - fix a drm_dev_register race - gem_shmem: add DmaResvGuard helper - gpuvm: require send/sync for driver data - implement send/sync for GpuVaAlloc and GpuVmBo - add SmContext lifetime - rename dma_handle to dma_address - change pci_sriov_get_totalvfs return to unsigned int core: - create drm_of_get_panel_orientation - send per-connector hotplug events - add thunderbolt UBHR tunneling support connector: - add color format property dmem: - introduce a peak file - accept one region per limit - add dmemcg support for eviction gpusvm: - reorg code to give drivers more flexibility atomic: - add create_state callback and helper - add documentation on atomic commit lifetime buddy: - add per-order free - add used block scoreboard - fix UAF - test buffer clearance on resume - add phys_addr->block helper gem: - drop DRIVER_GEM_GPUVA flag ttm: - be more aggressive allocating below protection limit sched: - add test suite for concurrent job submissions hdmi: - hook the color format property in helpers mipi-dsi: - add MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT bridge: - add atomic create callbacks - drop atomic reset - display-connector: don't autoenable HPD IRQ - trigger initial HPD for DP - ti-sn65dsi83: remove NO_HFP and NO_HBP mode flags - analogix_dp: switch to DP link training helpers dp: - add support for DSC max delta BPP edid: - parse panel type from DisplayID 2.x Display Parameters sysfb: - improve panel, stride, framebuffer size validation panel: - implement ref counting for struct drm_panel - himax-hx83121a: add backlight regulator support - novatek-nt36672a: Inline panel init sequences - visionox-vtdr6130: enable DSC - novatek-nt37801: Use mipi_dsi_*_multi() functions - samsung-s6d16d0: Fix prepare error handling - support Novatek NT36536 plus DT bindings - sofef00: fix backlight updates - osd101t2587: use mipi_dsi_*_multi interface - panel-edp: adjust timing for AUO displays - panel-lvds: support Opto Logic SCX1001511GGC49 - panel-simple: support Kyocera tcg070wvlq - panel-edp: quirks - AUO B116XAT04.3, CMN N116BCP-EA2, CSW MNB601LS1-8 - BOE NV116WH2-M30, BOE NT116WHM-N21, BOE NV116FH1-M31 - BOE NV116FH1-M30, NV140FHM-N5B, TM156VDXP25 - BOE NE160QDM-NY1, MB116AS01 - new: - Samsung ATNA40HQ08-0, Anbernic TD4310 - Chipone ICNA35XX, Ilitek ILI9488 - Ilitek ILI7807S, Renesas R63419 - MNE001BS6-2, MNF601BS4-1, Sharp LQ120P1JX51 virtio: - add support for save/restore virtio_gpu_objects - abort vq wait on device removal amdgpu: - add color format DRM property - initial compute pipe reset support - add GFX 6-8 modifier support - initial DCN 6.0.0 support - dmemcg eviction support - improved boundary checking for bios parsing - RAS updates and rework - VCN secure submission fixes - 8K panel fix - Display KUNIT tests - parse panel type from DisplayID - Align IP discovery to pci device lifetime - SOC15 register macro cleanups - UVD memory placement fixes - GFX9 mode2 reset fixes - drop unnecessary BUG/BUG_ON - GFX8 soft reset rework - enable soft reset on GFX8 - PSP/SMU 15.0.9 update - VI ASPM fix - userq fixes - amdgpu_vm_get_task_info_pasid lifetime fix - DC CACP support - change system_unbound_wq with system_dfl_wq - Loosen VFCT bios parsing to deal with pci=realloc - SI/SMU7 AC/DC switch fix - VM fence handling fix - GEM close optimisation - Apple Studio Display fixes - DC FRL fixes amdkfd: - initial compute pipe reset support - allow applications to opt out of sigbus on fatal errors - improve CRIU boundary checks - MQD handling rework - move TBA/TMA from system to device memory - avoid topology-lock in kfd_mmap - SVM eviction fixes radeon: - fix unset CONFIG_ACPI build i915: - Novalake (NVL display version 35) timing generator enabling - NVL DC3CO enabling - enable UBHR link rates on thunderbolt tunnels - Reduce Xe3+ PM demand peak bandwidth - enable pipe DMC error interrupts for display 30+ - add kunit tests for DP link config selection - refactor and document DP link recovery - i915/xe driver display probe/remove/suspend/resume/shutdown cleanup and unification - i915/xe display runtime PM unified - Break i915 and xe panic dependency on struct intel_framebuffer - Streamline Pre/Post-CSC LUT loops - drop TGL DC3DO support - CDCLK santization - fix HDMI scrambling enable - fix phys bo pread/pwrite with offset - add missing nospec on parallel submit slot - fix some NULL derefs xe: - drop force_execlist module param - gate observation streams with perf_allow_cpu - skip FORCE_WC and vm_bound check for external dma-bufs - dmemcg eviction support - remove unused NVL-S GuC - TLB invalidation improvements - NVL-S updated PCI-IDs and w/a - madvise: optimise invalidation path - fix infinite gt-reset loop in timeout recovery - update TTM device benefical_order - wait on external BO kernel fences in exec ioctl - add/use more KLV helpers - sriov: disable display in admin only PF mode - add RAS GPU health indicator - optimise TTM populate for DONTNEED BO - drop force_probe for NVL-s - add debugfs for pcode info amdxdna: - disable device buffer export nova: - build nova-core/nova-drm from drivers/gpu - export nova-core rust symbols (workaround) - GSP boot process consolidation - Boot GSP with vGPU enabled - TLV firmware image format support - Hopper/Blackwell fixes and cleanups - I/O projection adoption tyr: - firmware loading and MCU boot - add generic slot manager + MMU - GPU VM support ARM64 LPAE page tables - add kernel buffer object for internal allocations - add parser for Mali CSF - add MCU booting nouveau: - race fixes - check instmem iomapping at first use - add dmemcg support - expose NVDEC channels - add scanline position/head state support for GSP qxl: - convert simple encoder to regular ethosu: - add perf counter support etnaviv: - force flush on power register ops msm: - support DSC configuration with slice_per_pkt > 1 mxsfb: - fix disable sequence panthor: - support sparse mappings rockchip: - switch away from simple helpers - support YUV background color - fix layer config timeout - add edp support for rk3576 - add batch command submission function rocket: - error handling and NULL ptr deref fixes sun4i: - switch away from simple helpers imagination: - mark BXM-4-64 MC1 as support host1x: - support tegra264 tegra: - add DSI for tegra 20/30 v3d: - reduce PM runtime autosuspend delay - scheduler fixes and refactoring - deprecate v3d 3.3 and 4.1 - validate CPU job query boundaries hibmc: - improve plane format handling - switch to gem shmem mediatek: - cec: correct compat for mt7623-8167? exynos: - remove simple dependency - add error handling to encoder paths - take i2c adapter module reference -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmqGlb0ACgkQDHTzWXnE hr7l9A//TnfntEghigEEFobfJX+p9FzaOTPPia8paooAj52OBK8Z86WpbYwEo4K9 X+vPXPYpqgKSiGkkC33swAlylWs2v3JoZQ+CESERBk176Ql3ZKhicBINH+k8jIcX uaFoDgpgMoV1JCcvF/m48de8YRcejSN43rIucS0aIH5/r/YEyRsE4d4dzCXw/qD8 92tjbmH20mChfeo8MUNatZx+t8ssSOrVdqouLmmFB8tYTcca6qwN60uA+9VESVtd nZLCEiZD0FUI73oT7fmK/zL2rTb2pZRPFNdz0mb6f7UUpu7f8RYnroHrNsGa/FHl K5RD1/gSVpfc6CbrhPnePaRKvIGeEC4ief8YRRyeoNVT3cmkf+citpOoKN2JajF1 bub/ni2z1FGA3y1ckJb4Z6HmGHt5gki/KoAKCmZkJ7bb7WJq/JHMWEFfq4LuNjTA FSSxPozM4pb69DL02wwRJIEe8cYcc/gVTgrSkzR/tsVUoE6XI4AwZJ/Exa43+jVe hjNkAOMrl/+ma/WGQ4BPUVeTRPZP6RlNM4cSWvG1YA2Pf6+O+XLjukac6t+Ozj0X Fz1ePqYxELKSOYkZKxdpxRDyzY6SxvtyDHfHblo4p+BUvaXKP4wfNRexXETD6Qow P7rqYN6riDMRPI9CoPd25V7cbfYbvoV0iJzv3EQwU3pvB9Vu1ho= =TGZ1 -----END PGP SIGNATURE----- Merge tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights: - dmemcg eviction support is good for low VRAM things like Steam Machine - AMD adds gfx6-8 modifier support for older GPUs that enables a bunch of wayland stuff - i915/xe has some new hw support but also a lot of display refactoring Everything: perf: - export perf_allow_ APIs for xe udmabuf: - remove default size limit of 64MB rust: - i/o rework (signed tag from driver-core tree) - add registration guard and registration data - fix unbounded lifetimes in ioctl handler args - fix a drm_dev_register race - gem_shmem: add DmaResvGuard helper - gpuvm: require send/sync for driver data - implement send/sync for GpuVaAlloc and GpuVmBo - add SmContext lifetime - rename dma_handle to dma_address - change pci_sriov_get_totalvfs return to unsigned int core: - create drm_of_get_panel_orientation - send per-connector hotplug events - add thunderbolt UBHR tunneling support connector: - add color format property dmem: - introduce a peak file - accept one region per limit - add dmemcg support for eviction gpusvm: - reorg code to give drivers more flexibility atomic: - add create_state callback and helper - add documentation on atomic commit lifetime buddy: - add per-order free - add used block scoreboard - fix UAF - test buffer clearance on resume - add phys_addr->block helper gem: - drop DRIVER_GEM_GPUVA flag ttm: - be more aggressive allocating below protection limit sched: - add test suite for concurrent job submissions hdmi: - hook the color format property in helpers mipi-dsi: - add MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT bridge: - add atomic create callbacks - drop atomic reset - display-connector: don't autoenable HPD IRQ - trigger initial HPD for DP - ti-sn65dsi83: remove NO_HFP and NO_HBP mode flags - analogix_dp: switch to DP link training helpers dp: - add support for DSC max delta BPP edid: - parse panel type from DisplayID 2.x Display Parameters sysfb: - improve panel, stride, framebuffer size validation panel: - implement ref counting for struct drm_panel - himax-hx83121a: add backlight regulator support - novatek-nt36672a: Inline panel init sequences - visionox-vtdr6130: enable DSC - novatek-nt37801: Use mipi_dsi_*_multi() functions - samsung-s6d16d0: Fix prepare error handling - support Novatek NT36536 plus DT bindings - sofef00: fix backlight updates - osd101t2587: use mipi_dsi_*_multi interface - panel-edp: adjust timing for AUO displays - panel-lvds: support Opto Logic SCX1001511GGC49 - panel-simple: support Kyocera tcg070wvlq - panel-edp: quirks - AUO B116XAT04.3, CMN N116BCP-EA2, CSW MNB601LS1-8 - BOE NV116WH2-M30, BOE NT116WHM-N21, BOE NV116FH1-M31 - BOE NV116FH1-M30, NV140FHM-N5B, TM156VDXP25 - BOE NE160QDM-NY1, MB116AS01 - new: - Samsung ATNA40HQ08-0, Anbernic TD4310 - Chipone ICNA35XX, Ilitek ILI9488 - Ilitek ILI7807S, Renesas R63419 - MNE001BS6-2, MNF601BS4-1, Sharp LQ120P1JX51 virtio: - add support for save/restore virtio_gpu_objects - abort vq wait on device removal amdgpu: - add color format DRM property - initial compute pipe reset support - add GFX 6-8 modifier support - initial DCN 6.0.0 support - dmemcg eviction support - improved boundary checking for bios parsing - RAS updates and rework - VCN secure submission fixes - 8K panel fix - Display KUNIT tests - parse panel type from DisplayID - Align IP discovery to pci device lifetime - SOC15 register macro cleanups - UVD memory placement fixes - GFX9 mode2 reset fixes - drop unnecessary BUG/BUG_ON - GFX8 soft reset rework - enable soft reset on GFX8 - PSP/SMU 15.0.9 update - VI ASPM fix - userq fixes - amdgpu_vm_get_task_info_pasid lifetime fix - DC CACP support - change system_unbound_wq with system_dfl_wq - Loosen VFCT bios parsing to deal with pci=realloc - SI/SMU7 AC/DC switch fix - VM fence handling fix - GEM close optimisation - Apple Studio Display fixes - DC FRL fixes amdkfd: - initial compute pipe reset support - allow applications to opt out of sigbus on fatal errors - improve CRIU boundary checks - MQD handling rework - move TBA/TMA from system to device memory - avoid topology-lock in kfd_mmap - SVM eviction fixes radeon: - fix unset CONFIG_ACPI build i915: - Novalake (NVL display version 35) timing generator enabling - NVL DC3CO enabling - enable UBHR link rates on thunderbolt tunnels - Reduce Xe3+ PM demand peak bandwidth - enable pipe DMC error interrupts for display 30+ - add kunit tests for DP link config selection - refactor and document DP link recovery - i915/xe driver display probe/remove/suspend/resume/shutdown cleanup and unification - i915/xe display runtime PM unified - Break i915 and xe panic dependency on struct intel_framebuffer - Streamline Pre/Post-CSC LUT loops - drop TGL DC3DO support - CDCLK santization - fix HDMI scrambling enable - fix phys bo pread/pwrite with offset - add missing nospec on parallel submit slot - fix some NULL derefs xe: - drop force_execlist module param - gate observation streams with perf_allow_cpu - skip FORCE_WC and vm_bound check for external dma-bufs - dmemcg eviction support - remove unused NVL-S GuC - TLB invalidation improvements - NVL-S updated PCI-IDs and w/a - madvise: optimise invalidation path - fix infinite gt-reset loop in timeout recovery - update TTM device benefical_order - wait on external BO kernel fences in exec ioctl - add/use more KLV helpers - sriov: disable display in admin only PF mode - add RAS GPU health indicator - optimise TTM populate for DONTNEED BO - drop force_probe for NVL-s - add debugfs for pcode info amdxdna: - disable device buffer export nova: - build nova-core/nova-drm from drivers/gpu - export nova-core rust symbols (workaround) - GSP boot process consolidation - Boot GSP with vGPU enabled - TLV firmware image format support - Hopper/Blackwell fixes and cleanups - I/O projection adoption tyr: - firmware loading and MCU boot - add generic slot manager + MMU - GPU VM support ARM64 LPAE page tables - add kernel buffer object for internal allocations - add parser for Mali CSF - add MCU booting nouveau: - race fixes - check instmem iomapping at first use - add dmemcg support - expose NVDEC channels - add scanline position/head state support for GSP qxl: - convert simple encoder to regular ethosu: - add perf counter support etnaviv: - force flush on power register ops msm: - support DSC configuration with slice_per_pkt > 1 mxsfb: - fix disable sequence panthor: - support sparse mappings rockchip: - switch away from simple helpers - support YUV background color - fix layer config timeout - add edp support for rk3576 - add batch command submission function rocket: - error handling and NULL ptr deref fixes sun4i: - switch away from simple helpers imagination: - mark BXM-4-64 MC1 as support host1x: - support tegra264 tegra: - add DSI for tegra 20/30 v3d: - reduce PM runtime autosuspend delay - scheduler fixes and refactoring - deprecate v3d 3.3 and 4.1 - validate CPU job query boundaries hibmc: - improve plane format handling - switch to gem shmem mediatek: - cec: correct compat for mt7623-8167? exynos: - remove simple dependency - add error handling to encoder paths - take i2c adapter module reference" * tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel: (2074 commits) drm/xe/mcr: Take vcs1/vecs1 into account for first media slice drm/xe: Fix a bug in pc_adjust_freq_bounds() drm/xe: Fix xe_device_probe() failure drm/xe/drm_ras: Move has_drm_ras check to drm_ras layer drm/xe/ras: Fix boot-time ras error processing drm/amd/display: make DC_RUN_WITH_PREEMPTION_ENABLED misuse a build error drm/amd/pm: silence uninitialized variable warnings drm/amdgpu: skip BOs being torn down during GTT recovery drm/amdgpu: Reject UVD message with invalid number of h265 refs drm/amdgpu: keep PRT mappings off the vm_bo state lists drm/amdgpu: fix nbif 6.3.1 l1 low power not functional drm/amd/display: fix BT.2020 YCbCr output CSC matrices for DCE drm/amd/display: fix BT.2020 YCbCr limited output CSC matrix drm/amdgpu: Implement insert_end for VCE 3 drm/amdgpu: Fix UVD min buffer sizes drm/amdgpu: Fix UVD decode image min size calculation drm/amdgpu: Fix UVD dpb min size calculation for H264 drm/amdgpu: Reject UVD message with dimensions above 4096 drm/amdgpu: check ASPM on the dGPU host link drm/radeon: fix autosuspend cleanup during teardown ... |
||
|
Linus Torvalds
|
ed3b875bea |
mm.git review status for mm-hotfixes-stable..mm-stable
Everything:
Total patches: 501
Reviews/patch: 1.66
Reviewed rate: 70%
Excluding DAMON:
Total patches: 356
Reviews/patch: 2.26
Reviewed rate: 90%
Excluding DAMON and selftests:
Total patches: 329
Reviews/patch: 2.31
Reviewed rate: 92%
Excluding DAMON, selftests and maple_tree:
Total patches: 328
Reviews/patch: 2.31
Reviewed rate: 92%
Summary of patch series in this merge:
- The 2 patch series "mm: drop "sub" prefix from various places" from
Dev Jain implements some page->folio conversion and a naming cleanup.
- The 2 patch series "mm/kasan: remove redundant initialization for
kasan_flag_write_only" from Igor Putko provides some KASAN cleanup work.
- The 2 patch series "mm/filemap: reduce unnecessary xarray lookups"
from Chi Zhiling provides a small speedup in the pagecaache read code.
- The 4 patch series "mm/percpu: Fix possible NOFS/NOIO reclaim
recursion" from Kaitao Cheng improves a few things in the vmalloc code -
mainly the avoidance of GFP_KERNEL allocations when the caller asked for
GFP_NOFS or GFP_NOIO.
- The 3 patch series "mm/kmemleak: avoid soft lockup when scanning task
stacks" from Breno Leitao avoids a soft lockup watchdog trigger from the
kmemleak scanning code in extreme situations.
- The 6 patch series "mm/page_owner: misc cleanups" from Ye Liu is a
collection of unrelated cleanups to the page_owner code. For some
reason lots of people have been working on the page_owner code this
cycle.
- The 4 patch series "mm: convert to walk_page_range_vma() to eliminate
find_vma()" from Kefeng Wang simplifies and accelerates the page walking
library function.
- The 3 patch series "mm/migrate: preparatory cleanups for batch copy
and offload" from Shivank Garg implements cleanups in the migration
code.
- The 4 patch series "mm/page_owner: add per-fd filter infrastructure
for print_mode and NUMA filtering" from Zhen Ni provides per-fd
filtering to page_owner in order to reduce the sometimes vast amount of
output it can produce.
- The 19 patch series "mm: Refactor bootmem gigantic hugepage
allocation" from Muchun Song is a "set of fixes and preparatory cleanups
around bootmem HugeTLB handling, sparse initialization ordering, and
related vmemmap setup".
- The 4 patch series "mm/zsmalloc: reduce lock contention in zs_free()"
from Wenchao Hao reduces lock contention in zs_free(), which dominates
the unmap path under memory pressure on Android (LMK kills) and on x86
servers running zswap-heavy workloads. Up to 1.83x improvement in
microbenchmarking.
- The 2 patch series "move alloc_tag.c file under mm/" from Suren
Baghdasaryan does that.
- The 6 patch series "samples/damon: handle damon_{start,stop}()
failures" from SJ Park fixes improper handling of damon_start(),
damon_stop(), and damon_call() failures across DAMON sample modules to
prevent potential memory leaks, operation disruptions and use-after-free
bugs.
- The 11 patch series "mm/damon/sysfs: kobject_del() directories that
users can create/remove" from SJ Park resolves an issue where delayed
sysfs directory removal under CONFIG_DEBUG_KOBJECT_RELEASE causes
creation failures due to duplicate directory names by adding missing
kobject_del() calls before creating new directories.
- The 3 patch series "mm: cleanup clear_not_present_full_ptes()" from
David Hildenbrand cleans up the core pte handling code.
- The 3 patch series "selftests/damon: misc fixes for test bugs" from
Kunwu Chan fixes several bugs in the DAMON selftests.
- The 2 patch series "selftests/damon: fix memcg_path staging handling"
from Cheng Nie fixes a bug in _damon_sysfs.py for damos_filter
memcg_path setup, and adds a test case for it in sysfs.py.
- The 2 patch series "selftests/damon: test kdamond refresh_ms" from
Ruslan Valiyev introduces selftest coverage for DAMON's refresh_ms sysfs
feature by updating the test control module and verifying that scheme
stats update automatically without manual intervention.
- The 5 patch series "mm/damon: five misc fixups" from Akinobu Mita
contains miscellaneous DAMON fixups.
- The 2 patch series "mm/damon/core: detect internal variation above
max_nr_regions/2" from Jiayuan Chen fixes DAMON's region splitting
behavior when region counts exceed half the maximum budget by
dynamically scaling down the split fraction as the limit approaches,
preventing large regions from staying un-split, and adds corresponding
KUnit test coverage.
- The 6 patch series "mm: preparatory patches for PMD level swap
entries" from Usama Arif refactors and cleans up PMD softleaf helpers,
call sites, and architecture flags to lay the groundwork for a follow-up
series that introduces PMD page table swap entries.
- The 11 patch series "mm/damon: update, optimize, and clean up doc,
tests, and code" from SJ Park updates DAMON design and ABI
documentation, expands unit and selftest coverage, optimizes
damon_commit_target_regions(), and cleans up recently added sysfs
interface code for better readability.
- The 2 patch series "mm/vmpressure: reduce CPU, memory and code
overhead on cgroup v2" from Usama Arif optimizes vmpressure() by
skipping unnecessary work on cgroup v2 for userspace event notifications
and refactors v1-only eventfd handling into mm/memcontrol-v1.c to reduce
memory overhead and code complexity.
- The 10 patch series "selftests/mm: refactor pkey helpers and fix mmap
error handling" from Hongfu Li refactors pkeys shared tracing and
assertion helpers into a common file, unifies protection key selftests
to use consistent diagnostic logging and assertions, and enforces
standardized MAP_FAILED return checks for mmap() calls across the tests.
- The 18 patch series "mm/damon: optimize out nr_accesses_bp" from SJ
Park replaces the error-prone, continuously updated nr_accesses_bp field
in damon_region with an on-demand moving sum function
(damon_nr_accesses_mvsum()), reducing structure memory overhead and
avoiding state corruption bugs.
- The 6 patch series "Open HugeTLB allocation routine for more generic
use" from Ackerley Tng decouples HugeTLB folio allocation from VMA
dependencies by introducing hugetlb_alloc_folio(), enabling subsystems
like guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs.
- The 3 patch series "mm/damon: provide pseudo moving sum probe_hits"
from SJ Park integrates DAMON's probe_hits attribute counter into the
pseudo moving sum infrastructure, enabling real-time, online monitoring
without waiting for full aggregation intervals.
- The 18 patch series "mm: Some cleanups for page allocator APIs" from
Brendan Jackman simplifies and refactors the page allocator entry points
and flags by unifying allocation paths, adding internal alloc_flags
arguments, and eliminating redundant __ prefixed alloc_pages variants.
- The 5 patch series "Fix incorrect access of hugetlb pte entries" from
Dev Jain enforces the consistent use of huge_ptep_get() instead of
ptep_get() for HugeTLB entries and fixes an unaligned address issue in
arm64's huge_ptep_get() implementation.
- The 8 patch series "mm/damon: validate all parameters in the core"
from SJ Park consolidates parameter validation into the DAMON core
specifically within damon_start() and damon_commit_ctx() to centralize
error checking, eliminate caller-side redundant checks and to improve
maintenance efficiency.
- The 3 patch series "tools/mm/page_owner_sort: fix filtering and
cleanup issues" from Yichong Chen renames is_need() to filter_record()
for clearer return semantics, fixes per-record allocation memory leaks
and bounds output copies in search_pattern() to address an existing
buffer issue.
- The 4 patch series "memcg: bail out reclaim when memcg is dying" from
Jiayuan Chen mitigates a system-wide stall which occurs when a cgroup is
removed while one of its memory control files is doing synchronous
reclaim.
- The 5 patch series "mm/memory-failure: add panic option for
unrecoverable pages" from Breno Leitao introduces an opt-in
vm.panic_on_unrecoverable_memory_failure sysctl that immediately panics
the kernel on unrecoverable memory errors in kernel-owned pages to
preserve error context and prevent delayed, silent data corruption.
- The 11 patch series "mm/damon: refactor damon_{start,stop,commit}()
for simple error handling" from SJ Park refactors the DAMON core API
functions to guarantee that all contexts are fully stopped when
damon_start(), damon_stop(), or damon_commit() fail, eliminating the
need for complex and error-prone caller-side cleanup code.
- The 5 patch series "Keep tail page private zero at free and folio
split" from Zi Yan adds checks to ensure tail_page->private is zero when
freeing compound or high-order pages and when promoting tail pages
during large folio splits. By validating these fields at free and split
time, it allows the removal of redundant private field clearing inside
prep_compound_tail().
- The 4 patch series "mm: drop redundant lru_add_drain in anon folio
reuse paths" from Barry Song eliminates redundant lru_add_drain() calls
in wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead.
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads.
- The 3 patch series "mm: clean up folio LRU and swap declarations" from
Jianyue Wu reorganizes folio LRU and swap code by relocating
page-cluster state to mm/swap_state.c, renaming mm/swap.c to mm/folio.c,
and moving MM-internal reclaim declarations into mm/internal.h.
- The 15 patch series "userfaultfd: working set tracking for VM guest
memory" from Kiryl Shutsemau adds userfaultfd support for tracking the
working set of VM guest memory, so a VMM can identify hot pages and
reclaim cold ones to tiered or remote storage.
- The 10 patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part
2)" from David Hildenbrand removes the remaining pieces of
CONFIG_HAVE_BOOTMEM_INFO_NODE, performing some smaller cleanups around
freeing of reserved vmemmap pages on the way.
- The 7 patch series "mm/damon: update probe hits for runtime parameter
commits" from SJ Park ensures that DAMON's probe_hits attribute counter
is properly updated when monitoring intervals are changed at runtime,
matching the behavior of nr_accesses. To achieve this, it refactors and
renames existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- The 3 patch series "KSM: performance optimizations for rmap_walk_ksm"
from xu xin resolves a severe KSM reverse-mapping performance bottleneck
where thousands of split VMAs sharing a single anon_vma cause extended
lock contention. By adding an interval-filtering check during the rmap
walk, it reduces worst-case anon_vma lock hold times from over 500ms
down to under 2ms, preventing application freezes and latency spikes
under memory pressure.
- The 3 patch series "mm: split a couple of headers from internal.h"
from Mike Rapoport splits declarations related to mm_init, memblock,
vmalloc and sparse into new headers.
- The 2 patch series "KSM: use linear_page_index in collect_procs_ksm()"
from xu xin applies the interval tree optimization from rmap_walk_ksm()
to collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling. It hoists loop-invariant address
initialization and restricts the anon_vma_interval_tree_foreach walk to
a targeted page offset range, reducing redundant checks and improving
lookup efficiency.
- The 3 patch series "selftests/mm: avoid false failures in hugetlb and
KSM tests" from Sayali Patil fixes issues in the hugetlb and KSM MM
selftest categories that can report failures when the prerequisites for
the tests are not satisfied.
- The 19 patch series "mm/damon: introduce data attributes only
monitoring" from SJ Park introduces attribute-weighted region management
in DAMON, allowing users to prioritize specific data attributes (such as
page sizes or cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely disable
access tracking and adjust monitoring regions based on weighted
probe-hit counters to optimize monitoring quality for attribute-focused
workloads.
- The 8 patch series "mm/hmm: Add mmap lock-drop support for
userfaultfd-backed mappings" from Stanislav Kinsburskii extends
hmm_range_fault() to support userfaultfd-backed regions by allowing the
mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd regions
while preserving backward compatibility for existing callers.
- The 33 patch series "mm: make VMA page offset handling more
consistent" from Lorenzo Stoakes cleans up and standardizes how
vma->vm_pgoff is accessed and manipulated across file-backed and
anonymous mappings in the kernel.
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while renaming
rmap interval tree helpers to better reflect their functionality.
These changes establish a cleaner foundation for future work that will
unify virtual page offset indexing for all anonymous and CoW'd folios.
- The 3 patch series "mm: handle device-private PMDs in walk callbacks"
from Usama Arif addresses kernel panics and state corruption caused by
MM walk callbacks reaching non-present device-private PMD swap entries
created during HMM migrations.
It ensures that functions which acquire pmd_trans_huge_lock() properly
recognize device-private PMDs instead of assuming a present THP or a
standard migration entry.
- The 5 patch series "mm/rmap: Refactor try_to_unmap_one" from Dev Jain
refactors try_to_unmap_one by modularizing Hugetlb, anonymous-lazyfree,
and anonymous-swapbacked logic into dedicated functions, laying the
structural groundwork for batched anonymous large folio unmapping.
- The 4 patch series "Docs/ABI/damon: sysfs ABI document fixes and
additions" from Song Hu fixes typos and fills in missing entries in the
DAMON sysfs ABI document.
- The 10 patch series "dax/kmem: atomic whole-device hotplug via sysfs"
from Gregory Price introduces an atomic sysfs state attribute and
supporting DAX/MM infrastructure to prevent userland races when
offlining and removing entire memory regions.
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- The 13 patch series "mm: convert more vm_flags_t users to vma_flags_t"
from Lorenzo Stoakes continues transitioning the kernel from the
deprecated vm_flags_t type to vma_flags_t across core memory management
infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- The 2 patch series "Two small patches to clean up mm/mm_slot.h" from
xu xin refactors mm_slot.h by introducing mm_slot_remove() to unify
duplicate slot deletion sequences in khugepaged and KSM. It also adds
code documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- The 10 patch series "mm/damon/core: hide core-private struct fields"
from SJ Park cleans up DAMON core structures by consistently marking
internal-only fields with private: comment tags to prevent improper
direct access from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- The 6 patch series "mm/damon: unurgent fixes for infinite loop, NULL
de-ref and races" from SJ Park addresses potential infinite loops, NULL
dereferences, and race conditions identified in DAMON.
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- The 2 patch series "mm/page_alloc: fixes for free_pages_nolock() on
RT/UP" from Brendan Jackman fixes an NMI safety flaw in
__free_frozen_pages() where freeing pages on non-SMP or PREEMPT_RT
kernels can bypass can_spin_trylock() checks via non-PCP or isolated
migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- The 4 patch series "mm/page_alloc: couple of followups for recent
cleanups" from Brendan Jackman cleans up and updates page allocator
nomenclature, documentation, and debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete VM_BUG_ON()
assertions in allocation paths.
- The 3 patch series "mm/mseal: further cleanups" from Lorenzo Stoakes
refactors and simplifies the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO, eliminates
mm_struct parameters to enforce that sealing applies only to
current->mm, and streamlines overall logic and comments with no
functional changes intended.
- The 4 patch series "mm/vmscan: fix swappiness=max and clean up
per-node proactive reclaim" from Ridong Chen resolves reclaim behavior
bugs and cleans up function parameters across memory reclaim paths.
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead of
collapsing all failures into -EAGAIN, and removes the obsolete gfp_mask
parameter from __node_reclaim().
- The 6 patch series "mm: mincore: misc cleanups" from Kefeng Wang
cleans up and simplifies the mincore code. Most importantly, it removes
the historical special behavior that always reports VM_PFNMAP pages as
non-resident.
- The 2 patch series "mm/huge_memory: drop dead split helper variants"
from Kiryl Shutsemau implements two trivial cleanups in the folio split
API.
- The 7 patch series "mm/damon: fix uninitialized DAMOS field and kunit
exec expectation bugs" from SJ Park resolves minor operational and
testing bugs in DAMON identified by Sashiko. It initializes the
damos->last_applied field to prevent occasional efficiency degradation
and fixes invalid memory accesses in DAMON KUnit tests during test
failure handling.
- The 3 patch series "cleanup for stable_page_flags()" from Jinjiang Tu
cleans up and refactors stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- The 3 patch series "Batch unmap of uffd-wp file folios" from Dev Jain
extends batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching capabilities
to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- The 3 patch series "mm/early_ioremap: clarify and clean up
early_ioremap_reset()" from Sang-Heon Jeon clarifies and cleans up the
architecture-specific usage of __late_set_fixmap() and
__late_clear_fixmap() after early_ioremap_reset().
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset calls
in the RISC-V and ARM64 architectures.
- The 4 patch series "mm: fix reclaim storms in defrag_mode" from
Johannes Weiner addresses severe performance regressions, swap storms,
and spurious OOMs caused by vm.defrag_mode=1 under high memory pressure
in Meta production.
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- The 2 patch series "zram: lockmap tweaks" from Sebastian Siewior
optimizes and fixes lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolating lock classes across multiple instances.
It reduces memory overhead by replacing per-entry lockdep_map instances
with a single map per struct zram, and assigns a dynamic lock_class_key
to each instance to prevent false deadlock reports when different zram
devices are backed by distinct filesystems.
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Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "mm: drop "sub" prefix from various places" (Dev Jain)
page->folio conversion and a naming cleanup
- "mm/kasan: remove redundant initialization for kasan_flag_write_only"
(Igor Putko)
KASAN cleanup work
- "mm/filemap: reduce unnecessary xarray lookups" (Chi Zhiling)
Small speedup in the pagecaache read code
- "mm/percpu: Fix possible NOFS/NOIO reclaim recursion" (Kaitao Cheng)
Improve the vmalloc code - mainly the avoidance of GFP_KERNEL
allocations when the caller asked for GFP_NOFS or GFP_NOIO
- "mm/kmemleak: avoid soft lockup when scanning task stacks" (Breno
Leitao)
Avoid a soft lockup watchdog trigger from the kmemleak scanning code
in extreme situations
- "mm/page_owner: misc cleanups" (Ye Liu)
Cleanups to the page_owner code. For some reason lots of people have
been working on the page_owner code this cycle.
- "mm: convert to walk_page_range_vma() to eliminate find_vma()"
(Kefeng Wang)
Simplify and accelerate the page walking library function
- "mm/migrate: preparatory cleanups for batch copy and offload"
(Shivank Garg)
Cleanups in the migration code
- "mm/page_owner: add per-fd filter infrastructure for print_mode and
NUMA filtering" (Zhen Ni)
Per-fd filtering to page_owner in order to reduce the sometimes vast
amount of output it can produce
- "mm: Refactor bootmem gigantic hugepage allocation" (Muchun Song)
Fixes and preparatory cleanups around bootmem HugeTLB handling,
sparse initialization ordering, and related vmemmap setup
- "mm/zsmalloc: reduce lock contention in zs_free()" (Wenchao Hao)
Reduce lock contention in zs_free(), which dominates the unmap path
under memory pressure on Android (LMK kills) and on x86 servers
running zswap-heavy workloads.
Up to 1.83x improvement in microbenchmarking.
- "move alloc_tag.c file under mm/" (Suren Baghdasaryan)
- "samples/damon: handle damon_{start,stop}() failures" (SJ Park)
Fix improper handling of damon_start(), damon_stop(), and
damon_call() failures across DAMON sample modules to prevent
potential memory leaks, operation disruptions and use-after-free
bugs
- "mm/damon/sysfs: kobject_del() directories that users can
create/remove" (SJ Park)
Fix delayed sysfs directory removal under DEBUG_KOBJECT_RELEASE
causeing creation failures due to duplicate directory names by adding
missing kobject_del() calls before creating new directories
- "mm: cleanup clear_not_present_full_ptes()" (David Hildenbrand)
Clean up the core pte handling code
- "selftests/damon: misc fixes for test bugs" (Kunwu Chan)
Fix several bugs in the DAMON selftests
- "selftests/damon: fix memcg_path staging handling" (Cheng Nie)
Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and
add a test case for it in sysfs.py.
- "selftests/damon: test kdamond refresh_ms" (Ruslan Valiyev)
Selftest coverage for DAMON's refresh_ms sysfs feature by updating
the test control module and verifying that scheme stats update
automatically without manual intervention
- "mm/damon: five misc fixups" (Akinobu Mita)
Miscellaneous DAMON fixups.
- "mm/damon/core: detect internal variation above max_nr_regions/2"
(Jiayuan Chen)
Fix DAMON's region splitting behavior when region counts exceed half
the maximum budget by dynamically scaling down the split fraction as
the limit approaches, preventing large regions from staying un-split,
and add corresponding KUnit test coverage
- "mm: preparatory patches for PMD level swap entries" (Usama Arif)
Refactor and clean up PMD softleaf helpers, call sites, and
architecture flags to lay the groundwork for a follow-up series that
introduces PMD page table swap entries
- "mm/damon: update, optimize, and clean up doc, tests, and code" (SJ
Park)
Update DAMON design and ABI documentation, expands unit and selftest
coverage, optimize damon_commit_target_regions(), and clean up
recently added sysfs interface code for better readability
- "mm/vmpressure: reduce CPU, memory and code overhead on cgroup v2"
(Usama Arif)
Optimize vmpressure() by skipping unnecessary work on cgroup v2 for
userspace event notifications and refactor v1-only eventfd handling
into mm/memcontrol-v1.c to reduce memory overhead and code complexity
- "selftests/mm: refactor pkey helpers and fix mmap error handling"
(Hongfu Li)
Refactor pkeys shared tracing and assertion helpers into a common
file, unify protection key selftests to use consistent diagnostic
logging and assertions, and enforce standardized MAP_FAILED return
checks for mmap() calls across the tests
- "mm/damon: optimize out nr_accesses_bp" (SJ Park)
Replace the error-prone, continuously updated nr_accesses_bp field in
damon_region with an on-demand moving sum function, reducing
structure memory overhead and avoiding state corruption bugs
- "Open HugeTLB allocation routine for more generic use" (Ackerley Tng)
Decouple HugeTLB folio allocation from VMA dependencies by
introducing hugetlb_alloc_folio(), enabling subsystems like
guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs
- "mm/damon: provide pseudo moving sum probe_hits" (SJ Park)
Integrate DAMON's probe_hits attribute counter into the pseudo moving
sum infrastructure, enabling real-time, online monitoring without
waiting for full aggregation intervals
- "mm: Some cleanups for page allocator APIs" (Brendan Jackman)
Simplify and refactor the page allocator entry points and flags by
unifying allocation paths, adding internal alloc_flags arguments, and
eliminating redundant __ prefixed alloc_pages variants.
- "Fix incorrect access of hugetlb pte entries" (Dev Jain)
Enforce the consistent use of huge_ptep_get() instead of ptep_get()
for HugeTLB entries and fixes an unaligned address issue in arm64's
huge_ptep_get() implementation
- "mm/damon: validate all parameters in the core" (SJ Park)
Consolidate parameter validation into the DAMON core specifically
within damon_start() and damon_commit_ctx() to centralize error
checking, eliminate caller-side redundant checks and to improve
maintenance efficiency
- "tools/mm/page_owner_sort: fix filtering and cleanup issues" (Yichong
Chen)
Rename is_need() to filter_record() for clearer return semantics, fix
per-record allocation memory leaks and bound output copies in
search_pattern() to address an existing buffer issue
- "memcg: bail out reclaim when memcg is dying" (Jiayuan Chen)
Mitigate a system-wide stall which occurs when a cgroup is removed
while one of its memory control files is doing synchronous reclaim
- "mm/memory-failure: add panic option for unrecoverable pages" (Breno
Leitao)
Introduce an opt-in vm.panic_on_unrecoverable_memory_failure sysctl
that immediately panics the kernel on unrecoverable memory errors in
kernel-owned pages to preserve error context and prevent delayed,
silent data corruption
- "mm/damon: refactor damon_{start,stop,commit}() for simple error
handling" (SJ Park)
Refactor the DAMON core API functions to guarantee that all contexts
are fully stopped when damon_start(), damon_stop(), or damon_commit()
fail, eliminating the need for complex and error-prone caller-side
cleanup code
- "Keep tail page private zero at free and folio split" (Zi Yan)
Add checks to ensure tail_page->private is zero when freeing compound
or high-order pages and when promoting tail pages during large folio
splits. By validating these fields at free and split time, it allows
the removal of redundant private field clearing inside
prep_compound_tail()
- "mm: drop redundant lru_add_drain in anon folio reuse paths" (Barry
Song)
Eliminate redundant lru_add_drain() calls in
wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads
- "mm: clean up folio LRU and swap declarations" (Jianyue Wu)
Reorganize folio LRU and swap code by relocating page-cluster state
to mm/swap_state.c, renaming mm/swap.c to mm/folio.c, and moving
MM-internal reclaim declarations into mm/internal.h.
- "userfaultfd: working set tracking for VM guest memory" (Kiryl
Shutsemau)
Add userfaultfd support for tracking the working set of VM guest
memory, so a VMM can identify hot pages and reclaim cold ones to
tiered or remote storage
- "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)" (David
Hildenbrand)
Remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE,
performing some smaller cleanups around freeing of reserved vmemmap
pages on the way.
- "mm/damon: update probe hits for runtime parameter commits" (SJ Park)
Ensure that DAMON's probe_hits attribute counter is properly updated
when monitoring intervals are changed at runtime, matching the
behavior of nr_accesses. To achieve this, it refactors and renames
existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- "KSM: performance optimizations for rmap_walk_ksm" (xu xin)
Resolve a severe KSM reverse-mapping performance bottleneck where
thousands of split VMAs sharing a single anon_vma cause extended lock
contention.
By adding an interval-filtering check during the rmap walk, it
reduces worst-case anon_vma lock hold times from over 500ms down to
under 2ms, preventing application freezes and latency spikes under
memory pressure.
- "mm: split a couple of headers from internal.h" (Mike Rapoport)
Split declarations related to mm_init, memblock, vmalloc and sparse
into new headers
- "KSM: use linear_page_index in collect_procs_ksm()" (xu xin)
Apply the interval tree optimization from rmap_walk_ksm() to
collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling.
It hoists loop-invariant address initialization and restricts the
anon_vma_interval_tree_foreach walk to a targeted page offset range,
reducing redundant checks and improving lookup efficiency.
- "selftests/mm: avoid false failures in hugetlb and KSM tests" (Sayali
Patil)
Fix issues in the hugetlb and KSM MM selftest categories that can
report failures when the prerequisites for the tests are not
satisfied
- "mm/damon: introduce data attributes only monitoring" (SJ Park)
Introduce attribute-weighted region management in DAMON, allowing
users to prioritize specific data attributes (such as page sizes or
cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely
disable access tracking and adjust monitoring regions based on
weighted probe-hit counters to optimize monitoring quality for
attribute-focused workloads.
- "mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings"
(Stanislav Kinsburskii)
Extend hmm_range_fault() to support userfaultfd-backed regions by
allowing the mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd
regions while preserving backward compatibility for existing callers.
- "mm: make VMA page offset handling more consistent" (Lorenzo Stoakes)
Clean up and standardize how vma->vm_pgoff is accessed and
manipulated across file-backed and anonymous mappings in the kernel
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while
renaming rmap interval tree helpers to better reflect their
functionality.
These changes establish a cleaner foundation for future work that
will unify virtual page offset indexing for all anonymous and CoW'd
folios.
- "mm: handle device-private PMDs in walk callbacks" (Usama Arif)
Address kernel panics and state corruption caused by MM walk
callbacks reaching non-present device-private PMD swap entries
created during HMM migrations
It ensures that functions which acquire pmd_trans_huge_lock()
properly recognize device-private PMDs instead of assuming a present
THP or a standard migration entry.
- "mm/rmap: Refactor try_to_unmap_one" (Dev Jain)
Refactor try_to_unmap_one by modularizing Hugetlb,
anonymous-lazyfree, and anonymous-swapbacked logic into dedicated
functions, laying the structural groundwork for batched anonymous
large folio unmapping.
- "Docs/ABI/damon: sysfs ABI document fixes and additions" (Song Hu)
Fix typos and fills in missing entries in the DAMON sysfs ABI
document
- "dax/kmem: atomic whole-device hotplug via sysfs" (Gregory Price)
Introduce an atomic sysfs state attribute and supporting DAX/MM
infrastructure to prevent userland races when offlining and removing
entire memory regions
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- "mm: convert more vm_flags_t users to vma_flags_t" (Lorenzo Stoakes)
Continue transitioning the kernel from the deprecated vm_flags_t type
to vma_flags_t across core memory management infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- "Two small patches to clean up mm/mm_slot.h" (xu xin)
Refactor mm_slot.h by introducing mm_slot_remove() to unify duplicate
slot deletion sequences in khugepaged and KSM. It also adds code
documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- "mm/damon/core: hide core-private struct fields" (SJ Park)
Clean up DAMON core structures by consistently marking internal-only
fields with private: comment tags to prevent improper direct access
from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- "mm/damon: unurgent fixes for infinite loop, NULL de-ref and races"
(SJ Park)
Address potential infinite loops, NULL dereferences, and race
conditions identified in DAMON
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- "mm/page_alloc: fixes for free_pages_nolock() on RT/UP" (Brendan
Jackman)
Fix an NMI safety flaw in __free_frozen_pages() where freeing pages
on non-SMP or PREEMPT_RT kernels can bypass can_spin_trylock() checks
via non-PCP or isolated migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- "mm/page_alloc: couple of followups for recent cleanups" (Brendan
Jackman)
Clean up and update page allocator nomenclature, documentation, and
debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete
VM_BUG_ON() assertions in allocation paths.
- "mm/mseal: further cleanups" (Lorenzo Stoakes)
Refactor and simplify the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO,
eliminates mm_struct parameters to enforce that sealing applies only
to current->mm, and streamlines overall logic and comments with no
functional changes intended.
- "mm/vmscan: fix swappiness=max and clean up per-node proactive
reclaim" (Ridong Chen)
Resolve reclaim behavior bugs and clean up function parameters across
memory reclaim paths
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead
of collapsing all failures into -EAGAIN, and removes the obsolete
gfp_mask parameter from __node_reclaim().
- "mm: mincore: misc cleanups" (Kefeng Wang)
Clean up and simplifies the mincore code. Most importantly, it
removes the historical special behavior that always reports VM_PFNMAP
pages as non-resident.
- "mm/huge_memory: drop dead split helper variants" (Kiryl Shutsemau)
Two trivial cleanups in the folio split API
- "mm/damon: fix uninitialized DAMOS field and kunit exec expectation
bugs" (SJ Park)
Resolve minor operational and testing bugs in DAMON identified by
Sashiko. It initializes the damos->last_applied field to prevent
occasional efficiency degradation and fixes invalid memory accesses
in DAMON KUnit tests during test failure handling.
- "cleanup for stable_page_flags()" (Jinjiang Tu)
Clean up and refactor stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- "Batch unmap of uffd-wp file folios" (Dev Jain)
Extend batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching
capabilities to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- "mm/early_ioremap: clarify and clean up early_ioremap_reset()"
(Sang-Heon Jeon)
Clarify and clean up the architecture-specific usage of
__late_set_fixmap() and __late_clear_fixmap() after
early_ioremap_reset()
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset
calls in the RISC-V and ARM64 architectures.
- "mm: fix reclaim storms in defrag_mode" (Johannes Weiner)
Address severe performance regressions, swap storms, and spurious
OOMs caused by vm.defrag_mode=1 under high memory pressure in Meta
production
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- "zram: lockmap tweaks" (Sebastian Siewior)
Optimize and fix lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolate lock classes across multiple instances
This reduces memory overhead by replacing per-entry lockdep_map
instances with a single map per struct zram, and assigns a dynamic
lock_class_key to each instance to prevent false deadlock reports
when different zram devices are backed by distinct filesystems.
* tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (501 commits)
selftests/mm: thuge-gen: fix test_shmget() for PAGE_SIZE check
selftests/mm: unpoison pages in memory-failure teardown
mm/shmem: downgrade final i_blocks check in shmem_evict_inode() to pr_warn()
mm/khugepaged: replace mutex_lock/mutex_unlock usage with guard macro
mm/zsmalloc: fix release order of locks in zs_page_migrate()
Documentation: zram: remove sections numbering
ksm: stop iterating VMAs when ksm_test_exit returns true
mm: fold userfaultfd_rwp() to false without CONFIG_ARCH_HAS_PTE_PROTNONE
mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch()
zram: use a custom key for each zram object
zram: move lockmap to be per-zram instead per table
selftests/mm: fix gup_longterm EINVAL error message
mm: page_alloc: fix non-movable reclaim storm in defrag_mode
mm: page_alloc: move capture_control to the page allocator
mm: compaction: support non-movable compaction for pageblock requests
mm: page_alloc: __GFP_FS lockdep annotation for direct compaction
hugetlb: evaluate subpool free state while locked
mm/damon: remove trailing semicolons after function definitions
mm/damon/ops-common: prevent migration fallback to non-target nodes
mm/damon: update outdated comment about DAMOS filter handling
...
|
||
|
Dave Airlie
|
c44e278ce0 |
Linux 7.2
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmqCLGoeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGJzYH/0SFjcgnk1Z3Km+3 2kEeGAMETajW41W7+5QQkuHk83UXDxigDRoD857/d8utK90GrZAoTMS9/6zF3tra ht4G1yc2x7/xgVLkWii54d/sp1LEWTRDntN95fzYZwbeAXwd0AcYBlKXZYHKl4t/ 4yZCgYPmYTkewaYdbyWNPiZvCwhBUl5k1E9i/drh5IJXdgXRcqoO86FY9JX+Ks9x r0g+d6RIiSbDfwzgRpkBn0TRnqzh2OeBfgyrsgGZO2axwlKcA7SP0vwwT6c6nOUI s8F2xXrqrUI75JbSI4YbdwOSvktwbtkz83idlRAYBOdxof3LJ6i2YaxrT8iG+KUH l7+e18M= =eQMh -----END PGP SIGNATURE----- BackMerge tag 'v7.2' into drm-next Linux 7.2 There was a lot of conflicts this round between fixes and next, and I'd like to get the merge resolutions that we have in drm-tip. Signed-off-by: Dave Airlie <airlied@redhat.com> |
||
|
Linus Torvalds
|
368cf60c36 |
soc: drivers for 7.3
The SoC driver changes once more consist of many small fixes and
cleanups, that are to a large part the result of automated testing. On
platform specific drivers, this includes SoC specific code for xilinx,
freescale/nxp, qualcomm, TI, aspeed, omap, tegra, samsung, rockchip,
renesas, ixp4xx. In firmware drivers, we see a similar picture for
SCMI and qcomtee.
Aside from these, we see actual new hardware support in a few
areas:
- The Apple platform gets a new driver for low power states
- Updates to Qualcomm platform drivers add several new
hardware specific features and additional SoCs.
- Amlogic SoC support for A1 and T7 is added
- The Mediatek MMSYS driver is refactored as a cleanup.
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Merge tag 'soc-drivers-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"The SoC driver changes once more consist of many small fixes and
cleanups, that are to a large part the result of automated testing.
On platform specific drivers, this includes SoC specific code for
xilinx, freescale/nxp, qualcomm, TI, aspeed, omap, tegra, samsung,
rockchip, renesas, ixp4xx. In firmware drivers, we see a similar
picture for SCMI and qcomtee.
Aside from these, we see actual new hardware support in a few areas:
- The Apple platform gets a new driver for low power states
- Updates to Qualcomm platform drivers add several new hardware
specific features and additional SoCs.
- Amlogic SoC support for A1 and T7 is added
- The Mediatek MMSYS driver is refactored as a cleanup"
* tag 'soc-drivers-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (157 commits)
soc: qcom: make QCOM_PDR_MSG selectable
soc: qcom: ubwc: Fix missing include
soc: qcom: ubwc: Fix link error when QCOM_SMEM=n
media: iris: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
drm/msm: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
dt-bindings: arm: qcom,ids: Add SoC ID for Snapdragon SDM 850
firmware: xilinx: Clear firmware notifiers across kexec transitions
firmware: xilinx: Release all peripheral devices from firmware
firmware: xilinx: Add support to clear EL3 PM state
firmware: xilinx: Propagate actual error from feature check
firmware: xilinx: Use TF-A feature check for TF-A-specific APIs
bus: fsl-mc: drop unused assignment of acpi_device_id::driver_data
soc: fsl: qe: check platform_driver_register() in qe_ic_of_init()
phy: lynx-10g: use RCW override procedure for dynamic protocol change
soc: fsl: guts: implement the RCW override procedure
dt-bindings: fsl: layerscape-dcfg: define DCFG_DCSR region
soc: fsl: guts: make fsl_soc_data available after fsl_guts_init()
soc: fsl: guts: make it easier to determine on which SoC we are running
soc: fsl: guts: add a central fsl_guts_read() function
soc: fsl: guts: add a global structure to hold state
...
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Daniel Baluta
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a1ee4bb25b |
drm/msm: Guard the QCOM_UBWC_CONFIG select with QCOM_SMEM
QCOM_UBWC_CONFIG is about to depend on QCOM_SMEM. Guard the DRM_MSM
select with 'if ARCH_QCOM && QCOM_SMEM', and add
'depends on QCOM_SMEM || QCOM_SMEM=n' so a built-in driver is never
selected against a missing or modular SMEM.
Fixes:
|
||
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Tvrtko Ursulin
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2683a0e7c4 |
Revert "drm/msm: Remove drm_sched_init_args->num_rqs usage"
This reverts commit
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Lorenzo Stoakes
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a2fdfd0080 |
mm: introduce vma_get_page_prot() and use it
There's a large number of vm_get_page_prot(vma->vm_flags) invocations. Make life easier by introducing vma_get_page_prot() parameterised by the VMA. This also makes converting vm_get_page_prot() to vma_flags_t easier. Also update the userland VMA tests to reflect the change. No functional change intended. Link: https://lore.kernel.org/20260711-b4-vma-flags-mm-v2-8-0fa2357d5431@kernel.org Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Acked-by: Zi Yan <ziy@nvidia.com> Acked-by: Jani Nikula <jani.nikula@intel.com> # for i915 Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> [DRM] Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Cc: Dave Airlie <airlied@gmail.com> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Mike Rapoport <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nico Pache <npache@redhat.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pedro Falcato <pfalcato@suse.de> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Lorenzo Stoakes
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93d23dff8e |
mm: use linear_page_[index, delta]() consistently
There are a number of places where we open code what linear_page_index() and linear_page_delta() calculate. Replace this code with the appropriate functions for consistency. No functional change intended. Link: https://lore.kernel.org/20260710-b4-pre-scalable-cow-v2-21-2a5aa403d977@kernel.org Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> [DRM] Acked-by: Kai Huang <kai.huang@intel.com> # for sgx Reviewed-by: Gregory Price <gourry@gourry.net> Reviewed-by: Pedro Falcato <pfalcato@suse.de> # for mm Reviewed-by: Ackerley Tng <ackerleytng@google.com> [guest_memfd] Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: SJ Park <sj@kernel.org> Cc: Liam R. Howlett (Oracle) <liam@infradead.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dmitry Baryshkov
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140b134753 |
drm/msm: detach the ARM DMA mapping before attaching our own domain
On ARM32 with CONFIG_ARM_DMA_USE_IOMMU, arch_setup_dma_ops() creates a dma_iommu_mapping for every IOMMU-backed device and attaches its domain to the device's IOMMU group. That domain is neither the group's default nor its blocking domain, so when msm_iommu_new() later attaches the domain the driver manages itself, __iommu_attach_group() refuses it: if (group->domain && group->domain != group->default_domain && group->domain != group->blocking_domain) return -EBUSY; Both the GPU and the display controller are hit by this on apq8064 (IFC6410), leaving the board with no GPU and no display: adreno 4300000.gpu: failed to load adreno gpu adreno 4300000.gpu: probe with driver adreno failed with error -16 mdp4 5100000.display-controller: [drm:msm_drm_kms_init] *ERROR* failed to load kms mdp4 5100000.display-controller: adev bind failed: -16 Other ARM32 DRM drivers that manage their own domains (tegra, rockchip, exynos) drop the arch mapping first. Do the same in msm_iommu_new(), which both the display and the GPU paths go through. With this the GPU and the KMS device both initialise: [drm] Initialized msm 1.13.0 for 4300000.gpu on minor 0 [drm] Initialized msm-kms 1.13.0 for 5100000.display-controller on minor 1 Assisted-by: Claude:claude-opus-5 Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/743333/ Link: https://lore.kernel.org/r/20260730-fix-qcom-smmu-v2-3-18e0daf2d836@oss.qualcomm.com |
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Konrad Dybcio
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06b7ba2065 |
drm/msm/dsi: Drop dev_pm_opp_set_rate(0)
dev_pm_opp_set_rate(0) removes the vote specified in required-opps but
does not actually park the clock, making it run without the necessary
power backing. Drop the explicit call to it.
Every call site of ops->link_clk_disable() is followed by
pm_runtime_put(), so the power vote will be rescinded if deemed safe.
Fixes:
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||
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Konrad Dybcio
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cebfa9909e |
drm/msm/dp: Drop dev_pm_opp_set_rate(0)
dev_pm_opp_set_rate(0) removes the vote specified in required-opps but
does not actually park the clock, making it run without the necessary
power backing. Drop the explicit calls to it.
Fixes:
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Konrad Dybcio
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811c38907e |
drm/msm/dpu: Drop sneaky dev_pm_opp_set_rate(0)
dev_pm_opp_set_rate(0) removes the vote specified in required-opps but
does not actually park the clock, making it run without the necessary
power backing. Prevent that from happening when
_dpu_core_perf_get_core_clk_rate() returns 0.
Fixes:
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||
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Yongxing Mou
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c16ba6ba3d |
drm/msm/dp: pass panel to display enable/disable helpers
Pass struct msm_dp_panel to the display enable/disable helpers to make them easier to reuse for MST stream handling. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742752/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-14-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Abhinav Kumar
|
e8d91d17f7 |
drm/msm/dp: make bridge helpers use dp_display to allow re-use
dp_bridge helpers take drm_bridge as an input and extract the dp_display object to be used in the dp_display module. Rather than doing it in a roundabout way, directly pass the dp_display object to these helpers so that the MST bridge can also re-use the same helpers. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742750/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-13-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Yongxing Mou
|
894a6e16ab |
drm/msm/dp: simplify link and clock disable sequence
Move the common disable steps out of the sink_count check to make the flow easier to follow. No functional change intended. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742749/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-12-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Abhinav Kumar
|
a57a819262 |
drm/msm/dp: split dp_ctrl_off() into stream and link parts
Split dp_ctrl_off() into stream and link parts so that for MST cases we can control the link and pixel parts separately. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742746/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-11-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Abhinav Kumar
|
2f0e61b6c5 |
drm/msm/dp: allow dp_ctrl stream APIs to use any panel passed to it
With MST, multiple sinks share a single DP controller, so a cached panel in msm_dp_ctrl_private can no longer represent the per-stream sink. Drop the cache and pass panel explicitly to all stream-related dp_ctrl APIs. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742745/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-10-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Abhinav Kumar
|
477d23a695 |
drm/msm/dp: re-arrange dp_display_disable() into functional parts
dp_display_disable() handles special case of when monitor is disconnected from the dongle while the dongle stays connected thereby needing a separate function dp_ctrl_off_link_stream() for this. However with a slight rework this can still be handled by keeping common paths same for regular and special case. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742742/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-9-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Abhinav Kumar
|
ca16db3d18 |
drm/msm/dp: break up dp_display_enable into two parts
dp_display_enable() currently re-trains the link if needed and then enables the pixel clock, programs the controller to start sending the pixel stream. Split these two parts into prepare/enable APIs, to support MST bridges_enable insert the MST payloads funcs between enable stream_clks and program register. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742740/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-8-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
38e4b12149 |
drm/msm/dp: move the pixel clock control to its own API
Enable/Disable of DP pixel clock happens in multiple code paths leading to code duplication. Move it into individual helpers so that the helpers can be called wherever necessary. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742738/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-7-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
0a19867dfb |
drm/msm/dp: split link setup from source params
msm_dp_ctrl_configure_source_params() should only handle stream-related configuration. Move the link setup out of it so MST can program link and stream settings separately. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742737/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-6-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
3a1edd5ac0 |
drm/msm/dp: extract MISC1_MISC0 configuration into a separate function
Refactor the MISC1_MISC0 register configuration into a standalone helper function to support MST. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742735/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-5-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
7de83c2129 |
drm/msm/dp: split msm_dp_ctrl_config_ctrl() into link parts and stream parts
The DP_CONFIGURATION_CTRL register contains both link-level and stream-specific fields. Currently, msm_dp_ctrl_config_ctrl() configures all of them together. Separate the configuration into link parts and stream parts to support MST. Clear the stream-specific fields before OR-ing new values in the stream path to avoid bit accumulation across repeated calls. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742733/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-4-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
1c96c88ec1 |
drm/msm/dp: move mode setup into msm_dp_panel_init_panel_info()
The display layer directly assigns msm_dp_panel mode fields (bpp, sync polarity, yuv420 flag) instead of letting the panel manage its own state. Pass adjusted_mode and bpp as parameters to msm_dp_panel_init_panel_info() and move the assignments inside it. Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742731/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-3-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
|
Yongxing Mou
|
cd07d63588 |
drm/msm/dp: drop deprecated .mode_set() and use .atomic_pre_enable
The bridge .mode_set() callback is deprecated. Remove it and move the mode setup logic to .atomic_pre_enable(), where the adjusted_mode is available from the atomic CRTC state. .atomic_pre_enable() is used rather than .atomic_enable() because the DPU encoder's .atomic_enable() reads the output mode's YUV420 / wide bus state through the msm_display callbacks, and it runs after all bridges' .atomic_pre_enable() but before their .atomic_enable(). Programming the mode from the DP bridge's .atomic_enable() would leave the encoder reading the previously committed mode's state. Drop msm_dp_mode from msm_dp_display_private and store the mode directly in the panel, as it was only used as a temporary cache. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Assisted-by: Claude:claude-opus-4-8 [DB: moved to atomic_pre_enable] Patchwork: https://patchwork.freedesktop.org/patch/742729/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-2-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Yongxing Mou
|
db6f98b951 |
drm/msm/dp: remove cached drm_edid from panel
The cached drm_edid seems unnecessary here. Use the drm_edid pointer directly in the plug stage instead of caching it. Remove the cached drm_edid and the corresponding oneliner to simplify the code. Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/742727/ Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-1-f7779fce10f4@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
||
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Dmitry Baryshkov
|
bd926e62d3 |
drm/msm/dp: do not reject wide-bus modes while a YUV420 mode is active
msm_dp_bridge_mode_valid() halves the candidate mode's pixel clock when
the sink either uses YUV 420 output or drives the wide bus, so that modes
relying on those to stay under DP_MAX_PIXEL_CLK_KHZ are accepted. The
wide bus part is queried through msm_dp_wide_bus_available(), which
returns false whenever the currently committed mode uses YUV 420 output:
it inspects the stored msm_dp_mode.out_fmt_is_yuv_420 of the active mode,
not the mode being validated.
Consequently, while a YUV 420 mode is active, an RGB mode that needs the
wide bus to fit under DP_MAX_PIXEL_CLK_KHZ has its pixel clock left
un-halved and is wrongly rejected as MODE_CLOCK_HIGH.
The candidate mode's YUV 420 status is already evaluated as is_yuv_420,
and the wide bus is disabled precisely for YUV 420 output, so halving the
pixel clock for either case is equivalent to halving it when the
candidate is YUV 420 or the controller supports the wide bus. Test
wide_bus_supported directly, so the decision no longer depends on the
format of the active mode.
Fixes:
|
||
|
Dmitry Baryshkov
|
684f95fb4e |
drm/msm/dp: reject YUV420-only modes without VSC SDP support
DP conveys YUV 420 colorimetry through a VSC SDP. A sink that advertises
a mode as YUV-420-only therefore cannot be driven at all unless the panel
supports VSC SDP, yet msm_dp_bridge_mode_valid() only used the VSC SDP
capability to decide whether to halve the pixel clock, otherwise letting
such modes through to be validated (and possibly accepted) at the full
RGB clock the sink cannot display.
Reject 420-only modes with MODE_NO_420 when the panel does not support
VSC SDP. With those modes filtered out, being a 420-only mode implies VSC
SDP support, so the YUV-420 test reduces to drm_mode_is_420_only(): drop
msm_dp_is_yuv_420_enabled() and call the DRM helper directly at its two
callers (the DPU encoder already has the connector from the atomic state).
Fixes:
|
||
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Dmitry Baryshkov
|
93c125e4ea |
drm/msm: don't tear down KMS twice when KMS init fails
When priv->kms_init() (mdp4_kms_init() / mdp5_kms_init()) fails partway
through, both display drivers already tear their KMS state down via
mdp4_destroy() / mdp5_kms_destroy() before returning the error. The
common error path in msm_drm_init() then runs msm_drm_uninit() ->
msm_drm_kms_uninit(), which tries to destroy the very same KMS a second
time, which causes a use-after-free crash.
Bring MDP4/MDP5 in line with the DPU driver whose dpu_kms_init() doesn't
perform error cleanup on the failure. Let the common path own the
cleanup, instead of freeing the KMS from their error paths.
The crash trace for the reference:
__lock_acquire from lock_acquire (kernel/locking/lockdep.c:5906 kernel/locking/lockdep.c:5863)
lock_acquire from touch_wq_lockdep_map (kernel/workqueue.c:4094 (discriminator 1))
touch_wq_lockdep_map from __flush_workqueue (kernel/workqueue.c:4136)
__flush_workqueue from msm_drm_kms_uninit (drivers/gpu/drm/msm/msm_kms.c:243 (discriminator 33))
msm_drm_kms_uninit from msm_drm_uninit (drivers/gpu/drm/msm/msm_drv.c:93)
msm_drm_uninit from msm_drm_init (drivers/gpu/drm/msm/msm_drv.c:184)
msm_drm_init from try_to_bring_up_aggregate_device (drivers/base/component.c:249 drivers/base/component.c:227)
try_to_bring_up_aggregate_device from __component_add (drivers/base/component.c:269 drivers/base/component.c:748)
__component_add from dsi_host_attach (drivers/gpu/drm/msm/dsi/dsi_host.c:1739)
dsi_host_attach from mipi_dsi_attach (drivers/gpu/drm/drm_mipi_dsi.c:383)
mipi_dsi_attach from sharp_nt_panel_probe (drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c:247)
Fixes:
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Yongxing Mou
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8834f5494a |
drm/msm/dpu: Fix DMA SSPP REC block offsets on DPU v13
On DPU v13, the DMA SSPP REC0 and REC1 blocks are located at
offsets 0x1000 and 0x3000 from the SSPP common base.
The existing DMA SSPP sub-block descriptor does not initialize
sspp_rec0_blk and sspp_rec1_blk, causing REC register accesses
to be performed at offset 0 instead of the corresponding REC
block. As a result, DMA SSPP pipes are not programmed correctly
and fail to produce output.
Introduce a DPU v13 specific DMA SSPP descriptor with the correct
REC block offsets and use it for all DMA SSPPs in the Kaanapali
catalog.
Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com>
Fixes:
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Krzysztof Kozlowski
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c5f6b1abca |
drm/msm/hdmi_hdcp: Simplify register bit updates
Simplify reister updates (read, apply mask, write) with a wrapper to make code more obvious and avoid possible errors of reading and writing to different registers. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/737203/ Link: https://lore.kernel.org/r/20260702-drm-msm-hdmi-cleanup-v2-2-a4a4f0e8895b@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
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Krzysztof Kozlowski
|
eecba818a9 |
drm/msm/hdmi_bridge: Simplify register bit updates
Simplify reister updates (read, apply mask, write) with a wrapper to make code more obvious and avoid possible errors of reading and writing to different registers. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/737201/ Link: https://lore.kernel.org/r/20260702-drm-msm-hdmi-cleanup-v2-1-a4a4f0e8895b@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
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Thomas Zimmermann
|
1a2bfb1cf7 |
drm/msm: Make msm_framebuffer_init() an internal interface again
The only caller of msm_framebuffer_init() is msm_framebuffer_create() from the same source file. Declare the former as static. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/733889/ Link: https://lore.kernel.org/r/20260618141249.151338-7-tzimmermann@suse.de Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |