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b650b38b00
linux/drivers/iommu
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Vasant Hegde b650b38b00 iommu/amd: Do not enable SNP when V2 page table is enabled 
DTE[Mode]=0 is not supported when SNP is enabled in the host. That means
to support SNP, IOMMU must be configured with V1 page table (See IOMMU
spec [1] for the details). If user passes kernel command line to configure
IOMMU domains with v2 page table (amd_iommu=pgtbl_v2) then disable SNP
as the user asked by not forcing the page table to v1.

[1] https://www.amd.com/content/dam/amd/en/documents/processor-tech-docs/specifications/48882_IOMMU.pdf

Cc: Ashish Kalra <ashish.kalra@amd.com>
Cc: Michael Roth <michael.roth@amd.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20240410085702.31869-1-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2024-04-12 12:03:22 +02:00
..
amd iommu/amd: Do not enable SNP when V2 page table is enabled 2024-04-12 12:03:22 +02:00
arm iommu/arm-smmu-v3: Fix access for STE.SHCFG 2024-03-26 10:47:39 +00:00
intel Kbuild updates for v6.9 2024-03-21 14:41:00 -07:00
iommufd iommufd/selftest: Don't check map/unmap pairing with HUGE_PAGES 2024-02-26 16:59:12 -04:00
apple-dart.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
dma-iommu.c dma-mapping fixes for Linux 6.9 2024-03-24 10:45:31 -07:00
dma-iommu.h iommu: Optimise PCI SAC address trick 2023-07-14 16:14:17 +02:00
exynos-iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
fsl_pamu_domain.c iommu/fsl_pamu: Implement a PLATFORM domain 2023-09-25 11:40:54 +02:00
fsl_pamu_domain.h
fsl_pamu.c iommu/fsl: fix all kernel-doc warnings in fsl_pamu.c 2023-03-22 14:50:15 +01:00
fsl_pamu.h
hyperv-iommu.c x86/vector: Rename send_cleanup_vector() to vector_schedule_cleanup() 2023-08-06 14:15:09 +02:00
io-pgfault.c iommu: Make iommu_report_device_fault() return void 2024-02-16 15:19:37 +01:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm-v7s: Remove map/unmap 2022-11-19 10:44:15 +01:00
io-pgtable-arm.c iommu: Extend LPAE page table format to support custom allocators 2023-11-27 11:10:12 +01:00
io-pgtable-arm.h
io-pgtable-dart.c iommu/io-pgtable-dart: Add DART PTE support for t6000 2022-09-26 13:49:40 +02:00
io-pgtable.c iommu: Allow passing custom allocators to pgtable drivers 2023-11-27 11:10:12 +01:00
iommu-debugfs.c
iommu-priv.h iommu: constify pointer to bus_type 2024-03-01 13:46:57 +01:00
iommu-sva.c Merge branches 'arm/mediatek', 'arm/renesas', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next 2024-03-08 09:05:59 +01:00
iommu-sysfs.c iommu: Do not export iommu_device_link/unlink() 2023-07-14 16:14:15 +02:00
iommu-traces.c iommu: Remove detach_dev callback 2023-01-13 16:39:18 +01:00
iommu.c iommu: Validate the PASID in iommu_attach_device_pasid() 2024-03-28 06:38:40 +01:00
iova.c iommu/iova: use named kmem_cache for iova magazines 2024-02-09 11:45:47 +01:00
ipmmu-vmsa.c Merge branches 'arm/mediatek', 'arm/renesas', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next 2024-03-08 09:05:59 +01:00
irq_remapping.c iommu: Fix compilation without CONFIG_IOMMU_INTEL 2024-03-08 09:03:18 +01:00
irq_remapping.h
Kconfig IOMMU Updates for Linux v6.9 2024-03-13 09:15:30 -07:00
Makefile iommu: Separate SVA and IOPF 2024-02-16 15:19:29 +01:00
msm_iommu_hw-8xxx.h
msm_iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
msm_iommu.h
mtk_iommu_v1.c Merge branches 'arm/mediatek', 'arm/renesas', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next 2024-03-08 09:05:59 +01:00
mtk_iommu.c Merge branches 'arm/mediatek', 'arm/renesas', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next 2024-03-08 09:05:59 +01:00
of_iommu.c iommu: re-use local fwnode variable in iommu_ops_from_fwnode() 2024-03-01 13:47:01 +01:00
omap-iommu-debug.c iommu/omap: Fix buffer overflow in debugfs 2022-09-07 10:42:28 +02:00
omap-iommu.c iommu: Mark dev_iommu_priv_set() with a lockdep 2023-12-12 10:18:49 +01:00
omap-iommu.h iommu/omap: Convert to generic_single_device_group() 2023-09-25 11:52:08 +02:00
omap-iopgtable.h
rockchip-iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
s390-iommu.c iommu/dma: Allow a single FQ in addition to per-CPU FQs 2023-10-02 08:43:03 +02:00
sprd-iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
sun50i-iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
tegra-smmu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00
virtio-iommu.c iommu: constify of_phandle_args in xlate 2024-03-01 13:46:57 +01:00