diff options
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index aedeff8af929..f287dca85990 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2068,6 +2068,13 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type) { struct protection_domain *domain; + /* + * Since DTE[Mode]=0 is prohibited on SNP-enabled system, + * default to use IOMMU_DOMAIN_DMA[_FQ]. + */ + if (amd_iommu_snp_en && (type == IOMMU_DOMAIN_IDENTITY)) + return NULL; + domain = protection_domain_alloc(type); if (!domain) return NULL; |