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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-12-07 03:19:20 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-11 13:39:06 +0100 |
| commit | 6bd835d16072a1a9baead39648c18bd6495a6e7c (patch) | |
| tree | c953aafb41b3cceb17660db0ee6d31d822029f34 | |
| parent | bccd77063e971a006164968873f4c2918b7188e6 (diff) | |
| download | linux-6bd835d16072a1a9baead39648c18bd6495a6e7c.tar.gz linux-6bd835d16072a1a9baead39648c18bd6495a6e7c.tar.bz2 linux-6bd835d16072a1a9baead39648c18bd6495a6e7c.zip | |
iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs
commit 4165bf015ba9454f45beaad621d16c516d5c5afe upstream.
According to the AMD IOMMU spec, the commit 73db2fc595f3
("iommu/amd: Increase interrupt remapping table limit to 512 entries")
also requires the interrupt table length (IntTabLen) to be set to 9
(power of 2) in the device table mapping entry (DTE).
Fixes: 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries")
Reported-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20201207091920.3052-1-suravee.suthikulpanit@amd.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index ac3cac052af9..3caf3b1e8d67 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -255,7 +255,7 @@ #define DTE_IRQ_REMAP_INTCTL_MASK (0x3ULL << 60) #define DTE_IRQ_TABLE_LEN_MASK (0xfULL << 1) #define DTE_IRQ_REMAP_INTCTL (2ULL << 60) -#define DTE_IRQ_TABLE_LEN (8ULL << 1) +#define DTE_IRQ_TABLE_LEN (9ULL << 1) #define DTE_IRQ_REMAP_ENABLE 1ULL #define PAGE_MODE_NONE 0x00 |