Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1472209

Re: [Qemu-devel] [PATCH v2 0/2] vfio: blacklist legacy virtio devices

Show all headers | View raw

On 2016年08月30日 10:27, Michael S. Tsirkin wrote:
> Legacy virtio devices always bypassed an IOMMU, so using them with vfio was
> never safe.

And it actually won't work since GPA is assumed in the device. So I'm 
not sure this is must since we should get a IOMMU fault in this case.

>   This adds a quirk detecting these and disabling VFIO unless the
> noiommu mode is used.  At the moment, this only applies to virtio-pci devices.
>
> The patch might make sense on stable as well.
>
> Michael S. Tsirkin (2):
>    vfio: report group noiommu status
>    vfio: add virtio pci quirk
>
>   drivers/vfio/pci/vfio_pci_private.h |   1 +
>   include/linux/vfio.h                |   2 +
>   drivers/vfio/pci/vfio_pci.c         |  14 ++++
>   drivers/vfio/pci/vfio_pci_virtio.c  | 140 ++++++++++++++++++++++++++++++++++++
>   drivers/vfio/vfio.c                 |  12 ++++
>   drivers/vfio/pci/Makefile           |   1 +
>   6 files changed, 170 insertions(+)
>   create mode 100644 drivers/vfio/pci/vfio_pci_virtio.c
>

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v2 0/2] vfio: blacklist legacy virtio devices "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 04:30 +0200
  [PATCH v2 2/2] vfio: add virtio pci quirk "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 04:30 +0200
    Re: [PATCH v2 2/2] vfio: add virtio pci quirk Alex Williamson <alex.williamson@redhat.com> - 2016-08-30 05:30 +0200
      Re: [PATCH v2 2/2] vfio: add virtio pci quirk "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 05:50 +0200
      Re: [PATCH v2 2/2] vfio: add virtio pci quirk "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 06:00 +0200
      Re: [PATCH v2 2/2] vfio: add virtio pci quirk Alex Williamson <alex.williamson@redhat.com> - 2016-08-30 06:00 +0200
        Re: [PATCH v2 2/2] vfio: add virtio pci quirk Alex Williamson <alex.williamson@redhat.com> - 2016-08-30 07:00 +0200
          Re: [PATCH v2 2/2] vfio: add virtio pci quirk "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 07:30 +0200
            Re: [PATCH v2 2/2] vfio: add virtio pci quirk Alex Williamson <alex.williamson@redhat.com> - 2016-08-30 14:50 +0200
  [PATCH v2 1/2] vfio: report group noiommu status "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 04:30 +0200
  Re: [Qemu-devel] [PATCH v2 0/2] vfio: blacklist legacy virtio devices Jason Wang <jasowang@redhat.com> - 2016-08-30 05:20 +0200
    Re: [Qemu-devel] [PATCH v2 0/2] vfio: blacklist legacy virtio devices "Michael S. Tsirkin" <mst@redhat.com> - 2016-08-30 06:00 +0200

csiph-web