Re: [PATCH] iommu/amd: Add SNP page mode 0 support
Vasant Hegde <[email protected]>
| Newsgroups | dev.linux.lists.iommu |
|---|---|
| Message-ID | <[email protected]> |
On 7/23/2026 2:13 PM, Vasant Hegde wrote: > Newer AMD IOMMUs supports DTE[Mode]=0 for SNP-enabled system. This is > detected using new feature bit (EFR2[SNP_Page_Mode_0_Sup]). If this > feature is enabled, then IOMMU supports: > - Passthrough mode (i.e. iommu=pt) > - amd_iommu=pgtbl_v2: Forcing Linux DMA-API to use IOMMU v2 page table > - Setting up device for SVA mode in the host. > > Signed-off-by: Vasant Hegde <[email protected]> > Reviewed-by: Suravee Suthikulpanit <[email protected]> > Tested-by: Amandeep Kaur Longia <[email protected]> Missed to mention. This patch applies on top of https://lore.kernel.org/linux-iommu/[email protected]/T/#t -Vasant