On Tue, Oct 5, 2021 at 9:49 PM Eugenio Pérez <eperezma@xxxxxxxxxx> wrote:
>
> Following the logic of commit 56918a126ae ("memory: Add RAM_PROTECTED
> flag to skip IOMMU mappings") with VFIO, skip memory sections
> inaccessible via normal mechanisms, including DMA.
>
> Signed-off-by: Eugenio Pérez <eperezma@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---
> hw/virtio/vhost-vdpa.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
> index 47d7a5a23d..ea1aa71ad8 100644
> --- a/hw/virtio/vhost-vdpa.c
> +++ b/hw/virtio/vhost-vdpa.c
> @@ -28,6 +28,7 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section)
> {
> return (!memory_region_is_ram(section->mr) &&
> !memory_region_is_iommu(section->mr)) ||
> + memory_region_is_protected(section->mr) ||
> /* vhost-vDPA doesn't allow MMIO to be mapped */
> memory_region_is_ram_device(section->mr) ||
> /*
> --
> 2.27.0
>
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