Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ https://git.shady.money/linux/atom?h=master 2026-04-17T18:12:42Z 2026-04-17T18:12:42Z Linus Torvalds torvalds@linux-foundation.org 2026-04-17T18:12:42Z urn:sha1:87768582a440e7049a04e8af7383b86738d15b38 Pull dma-mapping updates from Marek Szyprowski: - added support for batched cache sync, what improves performance of dma_map/unmap_sg() operations on ARM64 architecture (Barry Song) - introduced DMA_ATTR_CC_SHARED attribute for explicitly shared memory used in confidential computing (Jiri Pirko) - refactored spaghetti-like code in drivers/of/of_reserved_mem.c and its clients (Marek Szyprowski, shared branch with device-tree updates to avoid merge conflicts) - prepared Contiguous Memory Allocator related code for making dma-buf drivers modularized (Maxime Ripard) - added support for benchmarking dma_map_sg() calls to tools/dma utility (Qinxin Xia) * tag 'dma-mapping-7.1-2026-04-16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: (24 commits) dma-buf: heaps: system: document system_cc_shared heap dma-buf: heaps: system: add system_cc_shared heap for explicitly shared memory dma-mapping: introduce DMA_ATTR_CC_SHARED for shared memory mm: cma: Export cma_alloc(), cma_release() and cma_get_name() dma: contiguous: Export dev_get_cma_area() dma: contiguous: Make dma_contiguous_default_area static dma: contiguous: Make dev_get_cma_area() a proper function dma: contiguous: Turn heap registration logic around of: reserved_mem: rework fdt_init_reserved_mem_node() of: reserved_mem: clarify fdt_scan_reserved_mem*() functions of: reserved_mem: rearrange code a bit of: reserved_mem: replace CMA quirks by generic methods of: reserved_mem: switch to ops based OF_DECLARE() of: reserved_mem: use -ENODEV instead of -ENOENT of: reserved_mem: remove fdt node from the structure dma-mapping: fix false kernel-doc comment marker dma-mapping: Support batch mode for dma_direct_{map,unmap}_sg dma-mapping: Separate DMA sync issuing and completion waiting arm64: Provide dcache_inval_poc_nosync helper arm64: Provide dcache_clean_poc_nosync helper ... 2026-04-17T04:21:55Z Linus Torvalds torvalds@linux-foundation.org 2026-04-17T04:21:55Z urn:sha1:43cfbdda5af60ffc6272a7b8c5c37d1d0a181ca9 Pull iommufd updates from Jason Gunthorpe: "Several fixes: - Add missing static const - Correct type 1 emulation for VFIO_CHECK_EXTENSION when no-iommu is turned on - Fix selftest memory leak and syzkaller splat - Fix missed -EFAULT in fault reporting write() fops - Fix a race where map/unmap with the internal IOVA allocator can unmap things it should not" * tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: iommufd: Fix a race with concurrent allocation and unmap iommufd/selftest: Remove MOCK_IOMMUPT_AMDV1 format iommufd: Fix return value of iommufd_fault_fops_write() iommufd: update outdated comment for renamed iommufd_hw_pagetable_alloc() iommufd/selftest: Fix page leaks in mock_viommu_{init,destroy} iommufd: vfio compatibility extension check for noiommu mode iommufd: Constify struct dma_buf_attach_ops 2026-04-15T22:05:51Z Linus Torvalds torvalds@linux-foundation.org 2026-04-15T22:05:51Z urn:sha1:f1d26d72f01556c787b1291729aa7a2ce37656a8 Pull iommu updates from Joerg Roedel: "Core: - Support for RISC-V IO-page-table format in generic iommupt code ARM-SMMU Updates: - Introduction of an "invalidation array" for SMMUv3, which enables future scalability work and optimisations for devices with a large number of SMMUv3 instances - Update the conditions under which the SMMUv3 driver works around hardware errata for invalidation on MMU-700 implementations - Fix broken command filtering for the host view of NVIDIA's "cmdqv" SMMUv3 extension - MMU-500 device-tree binding additions for Qualcomm Eliza & Hawi SoCs Intel VT-d: - Support for dirty tracking on domains attached to PASID - Removal of unnecessary read*()/write*() wrappers - Improvements to the invalidation paths AMD Vi: - Race-condition fixed in debugfs code - Make log buffer allocation NUMA aware RISC-V: - IO-TLB flushing improvements - Minor fixes" * tag 'iommu-updates-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (48 commits) iommu/vt-d: Restore IOMMU_CAP_CACHE_COHERENCY dt-bindings: arm-smmu: qcom: Add compatible for Hawi SoC iommu/amd: Invalidate IRT cache for DMA aliases iommu/riscv: Remove overflows on the invalidation path iommu/amd: Fix clone_alias() to use the original device's devid iommu/vt-d: Remove the remaining pages along the invalidation path iommu/vt-d: Pass size_order to qi_desc_piotlb() not npages iommu/vt-d: Split piotlb invalidation into range and all iommu/vt-d: Remove dmar_writel() and dmar_writeq() iommu/vt-d: Remove dmar_readl() and dmar_readq() iommufd/selftest: Test dirty tracking on PASID iommu/vt-d: Support dirty tracking on PASID iommu/vt-d: Rename device_set_dirty_tracking() and pass dmar_domain pointer iommu/vt-d: Block PASID attachment to nested domain with dirty tracking iommu/dma: Always allow DMA-FQ when iommupt provides the iommu_domain iommu/riscv: Fix signedness bug iommu/amd: Fix illegal cap/mmio access in IOMMU debugfs iommu/amd: Fix illegal device-id access in IOMMU debugfs iommu/tegra241-cmdqv: Update uAPI to clarify HYP_OWN requirement iommu/tegra241-cmdqv: Set supports_cmd op in tegra241_vcmdq_hw_init() ... 2026-04-15T15:45:00Z Linus Torvalds torvalds@linux-foundation.org 2026-04-15T15:45:00Z urn:sha1:4a57e0913e8c7fff407e97909f4ae48caa84d612 Pull drm updates from Dave Airlie: "Highlights: - new DRM RAS infrastructure using netlink - amdgpu: enable DC on CIK APUs, and more IP enablement, and more user queue work - xe: purgeable BO support, and new hw enablement - dma-buf : add revocable operations Full summary: mm: - two-pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef<T> support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks" * tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits) drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc drm/ttm/tests: fix lru_count ASSERT drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs drm/fb-helper: Fix a locking bug in an error path dma-fence: correct kernel-doc function parameter @flags ttm/pool: track allocated_pages per numa node. ttm/pool: make pool shrinker NUMA aware (v2) ttm/pool: drop numa specific pools ttm/pool: port to list_lru. (v2) drm/ttm: use gpu mm stats to track gpu memory allocations. (v4) mm: add gpu active/reclaim per-node stat counters (v2) gpu: nova-core: fix missing colon in SEC2 boot debug message gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing gpu: nova-core: bitfield: fix broken Default implementation gpu: nova-core: falcon: pad firmware DMA object size to required block alignment gpu: nova-core: gsp: fix undefined behavior in command queue code drm/shmem_helper: Make sure PMD entries get the writeable upgrade accel/ivpu: Trigger recovery on TDR with OS scheduling drm/msm: Use of_get_available_child_by_name() dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir ... 2026-04-11T12:57:02Z Sina Hassani sina@openai.com 2026-04-10T18:32:44Z urn:sha1:8602018b1f17fbdaa5e5d79f4c8603ad20640c12 iopt_unmap_iova_range() releases the lock on iova_rwsem inside the loop body when getting to the more expensive unmap operations. This is fine on its own, except the loop condition is based on the first area that matches the unmap address range. If a concurrent call to map picks an area that was unmapped in previous iterations, the loop mistakenly tries to unmap it. This is reproducible by having one userspace thread map buffers and pass them to another thread that unmaps them. The problem manifests as EBUSY errors with single page mappings. Fix this by advancing the start pointer after unmapping an area. This ensures each iteration only examines the IOVA range that remains mapped, which is guaranteed not to have overlaps. Cc: stable@vger.kernel.org Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping") Link: https://patch.msgid.link/r/CAAJpGJSR4r_ds1JOjmkqHtsBPyxu8GntoeW08Sk5RNQPmgi+tg@mail.gmail.com Signed-off-by: Sina Hassani <sina@openai.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> 2026-04-09T15:36:31Z Linus Torvalds torvalds@linux-foundation.org 2026-04-09T15:36:31Z urn:sha1:8b02520ec5f7b0d976e8bbc072242275acd472d0 Pull IOMMU fix from Will Deacon: - Fix regression introduced by the empty MMU gather fix in -rc7, where the ->iotlb_sync() callback can be elided incorrectly, resulting in boot failures (hangs), crashes and potential memory corruption. * tag 'iommu-fixes-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: iommu: Ensure .iotlb_sync is called correctly 2026-04-09T12:18:27Z Will Deacon will@kernel.org 2026-04-09T12:18:27Z urn:sha1:f8d5e7066d846c92ecac245134baf8a207becb65 2026-04-09T12:07:13Z Robin Murphy robin.murphy@arm.com 2026-04-08T14:40:57Z urn:sha1:7e0548525abd2bff9694e016b6a469ccd2d5a053 Many drivers have no reason to use the iotlb_gather mechanism, but do still depend on .iotlb_sync being called to properly complete an unmap. Since the core code is now relying on the gather to detect when there is legitimately something to sync, it should also take care of encoding a successful unmap when the driver does not touch the gather itself. Fixes: 90c5def10bea ("iommu: Do not call drivers for empty gathers") Reported-by: Jon Hunter <jonathanh@nvidia.com> Closes: https://lore.kernel.org/r/8800a38b-8515-4bbe-af15-0dae81274bf7@nvidia.com Signed-off-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Will Deacon <will@kernel.org> 2026-04-09T12:02:40Z Alex Williamson alex.williamson@nvidia.com 2026-04-08T18:44:42Z urn:sha1:ebfaf2bcc1902d293ed25f5a0580c96f73c47cbb In removing IOMMU_CAP_DEFERRED_FLUSH, the below referenced commit was over-eager in removing the return, resulting in the test for IOMMU_CAP_CACHE_COHERENCY falling through to an irrelevant option. Restore dropped return. Fixes: 1c18a1212c77 ("iommu/dma: Always allow DMA-FQ when iommupt provides the iommu_domain") Signed-off-by: Alex Williamson <alex.williamson@nvidia.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Will Deacon <will@kernel.org> 2026-04-07T10:36:31Z Simona Vetter simona.vetter@ffwll.ch 2026-04-07T10:27:36Z urn:sha1:322e4116ac8d48255f9599250347f48e56ce8979 Thomas Zimmermann needs 2f42c1a61616 ("drm/ast: dp501: Fix initialization of SCU2C") for drm-misc-next. Conflicts: - drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c Just between e927b36ae18b ("drm/amd/display: Fix NULL pointer dereference in dcn401_init_hw()") and it's cherry-pick that confused git. - drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c Deleted in 6b0a6116286e ("drm/amd/pm: Unify version check in SMUv11") but some cherry-picks confused git. Same for v12/v14. Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>