Suravee Suthikulpanit @ 2020-12-07 02:19 MST:
> 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 <jsnit...@redhat.com>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
> ---
> drivers/iommu/amd/amd_iommu_types.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/amd/amd_iommu_types.h
> b/drivers/iommu/amd/amd_iommu_types.h
> index 89647700bab2..494b42a31b7a 100644
> --- a/drivers/iommu/amd/amd_iommu_types.h
> +++ b/drivers/iommu/amd/amd_iommu_types.h
> @@ -257,7 +257,7 @@
> #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
Reviewed-by: Jerry Snitselaar <jsnit...@redhat.com>
