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Re: [PATCH V3 4/8] xen/virtio: Enable restricted memory access using Xen grant mappings
- To: Oleksandr <olekstysh@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Thu, 2 Jun 2022 15:09:00 -0400
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>
- Delivery-date: Thu, 02 Jun 2022 19:10:13 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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>
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