RE: [PATCH v3 9/9] vfio/pci: Add mmap() attributes to DMABUF feature

[Tian, Kevin]

> From: Matt Evans <matt@xxxxxxxxxx>
> Sent: Wednesday, June 10, 2026 11:43 PM
> 
> A new VFIO feature, VFIO_DEVICE_FEATURE_DMA_BUF_MEMATTR, is added
> to
> set CPU-facing memory type attributes for a DMABUF exported from
> vfio-pci.  These are used for subsequent mmap()s of the buffer.
> 
> There are two attributes supported:
>  - The default, VFIO_DEVICE_FEATURE_DMA_BUF_MEMATTR_NC
>  - VFIO_DEVICE_FEATURE_DMA_BUF_MEMATTR_WC, which results in WC
>    PTEs for the DMABUF's BAR region.
> 
> Signed-off-by: Matt Evans <matt@xxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>