+ Michael,
On 4/10/2025 12:14 PM, Sairaj Kodilkar wrote:
> Current amd_iommu enables the iommu_nodma address space when pt_supported
> flag is on. This causes device to bypass the IOMMU and use untranslated
> address to perform DMA when guest kernel uses DMA mode, resulting in
> failure to setup the devices in the guest.
>
> Fix the issue by removing pt_supported check and disabling nodma memory
> region. Adding pt_supported requires additional changes and we will look
> into it later.
>
> Fixes: c1f46999ef506 ("amd_iommu: Add support for pass though mode")
> Signed-off-by: Sairaj Kodilkar <sarun...@amd.com>
Reviewed-by: Vasant Hegde <vasant.he...@amd.com>
-Vasant
