Changes in nested.c

c17ee635fd3a482b2ad2bf5e269755c2eae5f25e - Merge drm/drm-fixes into drm-misc-fixes

Mon, 23 Feb 2026 09:09:45 +0000

Merge drm/drm-fixes into drm-misc-fixes7.0-rc1 was just released, let's merge it to kick the new release cycle.Signed-off-by: Maxime Ripard List of files: /linux/drivers/iommu/amd/nested.c

bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 - Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

Sun, 22 Feb 2026 00:37:42 +0000

Convert 'alloc_obj' family to use the new default GFP_KERNEL argumentThis was done entirely with mindless brute force, using git grep -l '\ List of files: /linux/drivers/iommu/amd/nested.c

8934827db5403eae57d4537114a9ff88b0a8460f - Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Sat, 21 Feb 2026 19:02:58 +0000

Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxPull kmalloc_obj conversion from Kees Cook: "This does the tree-wide conversion to kmalloc_obj() and friends using coccinelle, with a subsequent small manual cleanup of whitespace alignment that coccinelle does not handle. This uncovered a clang bug in __builtin_counted_by_ref(), so the conversion is preceded by disabling that for current versions of clang. The imminent clang 22.1 release has the fix. I've done allmodconfig build tests for x86_64, arm64, i386, and arm. I did defconfig builds for alpha, m68k, mips, parisc, powerpc, riscv, s390, sparc, sh, arc, csky, xtensa, hexagon, and openrisc"* tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kmalloc_obj: Clean up after treewide replacements treewide: Replace kmalloc with kmalloc_obj for non-scalar types compiler_types: Disable __builtin_counted_by_ref for Clang List of files: /linux/drivers/iommu/amd/nested.c

69050f8d6d075dc01af7a5f2f550a8067510366f - treewide: Replace kmalloc with kmalloc_obj for non-scalar types

Sat, 21 Feb 2026 07:49:23 +0000

treewide: Replace kmalloc with kmalloc_obj for non-scalar typesThis is the result of running the Coccinelle script fromscripts/coccinelle/api/kmalloc_objs.cocci. The script is designed toavoid scalar types (which need careful case-by-case checking), andinstead replace kmalloc-family calls that allocate struct or unionobject instances:Single allocations: kmalloc(sizeof(TYPE), ...)are replaced with: kmalloc_obj(TYPE, ...)Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)are replaced with: kmalloc_objs(TYPE, COUNT, ...)Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)(where TYPE may also be *VAR)The resulting allocations no longer return "void *", instead returning"TYPE *".Signed-off-by: Kees Cook List of files: /linux/drivers/iommu/amd/nested.c

1e0ea4dff0f46a3575b6882941dc7331c232d72c - Merge tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Thu, 12 Feb 2026 00:36:08 +0000

Merge tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linuxPull iommu updates from Joerg Roedel: "Core changes: - Rust bindings for IO-pgtable code - IOMMU page allocation debugging support - Disable ATS during PCI resets Intel VT-d changes: - Skip dev-iotlb flush for inaccessible PCIe device - Flush cache for PASID table before using it - Use right invalidation method for SVA and NESTED domains - Ensure atomicity in context and PASID entry updates AMD-Vi changes: - Support for nested translations - Other minor improvements ARM-SMMU-v2 changes: - Configure SoC-specific prefetcher settings for Qualcomm's "MDSS" ARM-SMMU-v3 changes: - Improve CMDQ locking fairness for pathetically small queue sizes - Remove tracking of the IAS as this is only relevant for AArch32 and was causing C_BAD_STE errors - Add device-tree support for NVIDIA's CMDQV extension - Allow some hitless transitions for the 'MEV' and 'EATS' STE fields - Don't disable ATS for nested S1-bypass nested domains - Additions to the kunit selftests"* tag 'iommu-updates-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (54 commits) iommupt: Always add IOVA range to iotlb_gather in gather_range_pages() iommu/amd: serialize sequence allocation under concurrent TLB invalidations iommu/amd: Fix type of type parameter to amd_iommufd_hw_info() iommu/arm-smmu-v3: Do not set disable_ats unless vSTE is Translate iommu/arm-smmu-v3-test: Add nested s1bypass/s1dssbypass coverage iommu/arm-smmu-v3: Mark EATS_TRANS safe when computing the update sequence iommu/arm-smmu-v3: Mark STE MEV safe when computing the update sequence iommu/arm-smmu-v3: Add update_safe bits to fix STE update sequence iommu/arm-smmu-v3: Add device-tree support for CMDQV driver iommu/tegra241-cmdqv: Decouple driver from ACPI iommu/arm-smmu-qcom: Restore ACTLR settings for MDSS on sa8775p iommu/vt-d: Fix race condition during PASID entry replacement iommu/vt-d: Clear Present bit before tearing down context entry iommu/vt-d: Clear Present bit before tearing down PASID entry iommu/vt-d: Flush piotlb for SVM and Nested domain iommu/vt-d: Flush cache for PASID table before using it iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode rust: iommu: fix `srctree` link warning rust: iommu: fix Rust formatting ... List of files: /linux/drivers/iommu/amd/nested.c

ad095636604604b3574c1920260b1360c25ced6f - Merge branches 'fixes', 'arm/smmu/updates', 'intel/vt-d', 'amd/amd-vi' and 'core' into next

Fri, 06 Feb 2026 10:10:40 +0000

Merge branches 'fixes', 'arm/smmu/updates', 'intel/vt-d', 'amd/amd-vi' and 'core' into next List of files: /linux/drivers/iommu/amd/nested.c

103f4e7c8544961c72dd9f68eed384a2f1194d03 - iommu/amd: Add support for nested domain attach/detach

Thu, 15 Jan 2026 06:08:14 +0000

iommu/amd: Add support for nested domain attach/detachIntroduce set_dte_nested() to program guest translation settings inthe host DTE when attaches the nested domain to a device.Reviewed-by: Nicolin Chen Signed-off-by: Suravee Suthikulpanit Signed-off-by: Joerg Roedel List of files: /linux/drivers/iommu/amd/nested.c

757d2b1fdf5b7d6eead5963a49b5780617987ab8 - iommu/amd: Introduce gDomID-to-hDomID Mapping and handle parent domain invalidation

Thu, 15 Jan 2026 06:08:11 +0000

iommu/amd: Introduce gDomID-to-hDomID Mapping and handle parent domain invalidationEach nested domain is assigned guest domain ID (gDomID), which guest OSprograms into guest Device Table Entry (gDTE). For each gDomID, the driverassigns a corresponding host domain ID (hDomID), which will be programmedinto the host Device Table Entry (hDTE).The hDomID is allocated during amd_iommu_alloc_domain_nested(),and free during nested_domain_free(). The gDomID-to-hDomID mapping info(struct guest_domain_mapping_info) is stored in a per-viommu xarray(struct amd_iommu_viommu.gdomid_array), which is indexed by gDomID.Note also that parent domain can be shared among struct iommufd_viommu.Therefore, when hypervisor invalidates the nest parent domain, the AMDIOMMU command INVALIDATE_IOMMU_PAGES must be issued for each hDomID inthe gdomid_array. This is handled by the iommu_flush_pages_v1_hdom_ids(),where it iterates through struct protection_domain.viommu_list.Suggested-by: Jason Gunthorpe Signed-off-by: Suravee Suthikulpanit Signed-off-by: Joerg Roedel List of files: /linux/drivers/iommu/amd/nested.c

774180a74abc89fd1389f51a6f93dbfcded365c2 - iommu/amd: Add support for nested domain allocation

Thu, 15 Jan 2026 06:08:10 +0000

iommu/amd: Add support for nested domain allocationThe nested domain is allocated with IOMMU_DOMAIN_NESTED type to storestage-1 translation (i.e. GVA->GPA). This includes the GCR3 root pointertable along with guest page tables. The struct iommu_hwpt_amd_guestcontains this information, and is passed from user-space as a parameterof the struct iommu_ops.domain_alloc_nested().Reviewed-by: Nicolin Chen Reviewed-by: Jason Gunthorpe Signed-off-by: Suravee Suthikulpanit Signed-off-by: Joerg Roedel List of files: /linux/drivers/iommu/amd/nested.c