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linux/drivers/iommu/amd
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Sairaj Kodilkar 66dce411c7 amd/iommu: Preserve domain ids inside the kdump kernel 
[ Upstream commit c2e8dc1222 ]

Currently AMD IOMMU driver does not reserve domain ids programmed in the
DTE while reusing the device table inside kdump kernel. This can cause
reallocation of these domain ids for newer domains that are created by
the kdump kernel, which can lead to potential IO_PAGE_FAULTs

Hence reserve these ids inside pdom_ids.

Fixes: 38e5f33ee3 ("iommu/amd: Reuse device table for kdump")
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reported-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-01-02 12:56:54 +01:00
..
amd_iommu.h iommu/amd: Refactor AMD IOMMU debugfs initial setup 2025-07-15 11:41:52 +01:00
amd_iommu_types.h Merge branches 'apple/dart', 'ti/omap', 'riscv', 'intel/vt-d' and 'amd/amd-vi' into next 2025-09-26 10:03:33 +02:00
debugfs.c iommu/amd: Fix potential out-of-bounds read in iommu_mmio_show 2025-12-18 14:02:49 +01:00
init.c amd/iommu: Preserve domain ids inside the kdump kernel 2026-01-02 12:56:54 +01:00
io_pgtable.c iommu/amd/pgtbl: Fix possible race while increase page table level 2025-09-19 09:39:40 +02:00
io_pgtable_v2.c iommu/pages: Remove iommu_alloc_page_node() 2025-04-17 16:22:51 +02:00
iommu.c iommu/amd: Add support to remap/unmap IOMMU buffers for kdump 2025-09-05 14:44:30 +02:00
Kconfig iommu/amd: Convert to msi_create_parent_irq_domain() helper 2025-07-04 10:28:10 +02:00
Makefile iommu: make inclusion of amd directory conditional 2025-05-16 08:46:46 +02:00
pasid.c iommu/amd: Consolidate protection domain free code 2025-03-10 09:27:11 +01:00
ppr.c iommu/pages: Remove the order argument to iommu_free_pages() 2025-04-17 16:22:33 +02:00
quirks.c iommu/amd: Include PCI segment ID when initialize IOMMU 2022-07-07 09:37:51 +02:00