Re: [PATCH V3 4/8] xen/virtio: Enable restricted memory access using Xen grant mappings

[Boris Ostrovsky]

On 6/2/22 8:49 AM, Oleksandr wrote:
> On 31.05.22 00:00, Oleksandr Tyshchenko wrote:
>
> Hello all.
>
> > From: Juergen Gross <jgross@xxxxxxxx>
> >
> > In order to support virtio in Xen guests add a config option XEN_VIRTIO
> > enabling the user to specify whether in all Xen guests virtio should
> > be able to access memory via Xen grant mappings only on the host side.
> >
> > Also set PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS feature from the guest
> > initialization code on Arm and x86 if CONFIG_XEN_VIRTIO is enabled.
> >
> > Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> > Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
> > Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> > ---
> > Changes V1 -> V2:
> >     - new patch, split required changes from commit:
> >      "[PATCH V1 3/6] xen/virtio: Add option to restrict memory access under Xen"
> >     - rework according to new platform_has() infrastructure
> >
> > Changes V2 -> V3:
> >     - add Stefano's R-b
>
> May I please ask for the ack or comments for x86 side here?

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>