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iommu/amd: Do not set the D bit on AMD v2 table entries

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[ Upstream commit 2910a7fa1be090fc7637cef0b2e70bcd15bf5469 ]

The manual says that bit 6 is IGN for all Page-Table Base Address
pointers, don't set it.

Fixes: aaac38f614 ("iommu/amd: Initial support for AMD IOMMU v2 page table")
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/14-v2-831cdc4d00f3+1a315-amd_iopgtbl_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jason Gunthorpe 2024-08-29 21:06:23 -03:00 • committed by Greg Kroah-Hartman
parent 8973959341
commit 1f0c998b53
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/amd/io_pgtable_v2.c
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@ -56,7 +56,7 @@ static inline u64 set_pgtable_attr(u64 *page)
u64 prot;
prot = IOMMU_PAGE_PRESENT | IOMMU_PAGE_RW | IOMMU_PAGE_USER;
prot |= IOMMU_PAGE_ACCESS | IOMMU_PAGE_DIRTY;
prot |= IOMMU_PAGE_ACCESS;
return (iommu_virt_to_phys(page) | prot);
}