6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
[ Upstream commit 2910a7fa1be090fc7637cef0b2e70bcd15bf5469 ]
The manual says that bit 6 is IGN for all Page-Table Base Address
pointers, don't set it.
Fixes: aaac38f61487 ("iommu/amd: Initial support for AMD IOMMU v2 page table")
Reviewed-by: Vasant Hegde <vasant.hegde@xxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Link: https://lore.kernel.org/r/14-v2-831cdc4d00f3+1a315-amd_iopgtbl_jgg@xxxxxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iommu/amd/io_pgtable_v2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/amd/io_pgtable_v2.c b/drivers/iommu/amd/io_pgtable_v2.c
index e9ef2e0a62f67..cbf0c46015125 100644
--- a/drivers/iommu/amd/io_pgtable_v2.c
+++ b/drivers/iommu/amd/io_pgtable_v2.c
@@ -50,7 +50,7 @@ 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);
}
--
2.43.0
