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SubjectRe: [virtio-dev] [PATCH] virtio_pci: support enabling VFs
Date
On May 30, 2018, at 1:55 AM, Tiwei Bie <tiwei.bie@intel.com> wrote:

> There is a new feature bit allocated in virtio spec to
> support SR-IOV (Single Root I/O Virtualization):
>
> https://github.com/oasis-tcs/virtio-spec/issues/11
>
> This patch enables the support for this feature bit in
> virtio driver.
>
> Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
> ---
> This patch depends on below proposal:
> https://lists.oasis-open.org/archives/virtio-dev/201805/msg00154.html
>
> This patch depends on below patch:
> https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?h=pci/virtualization&id=8effc395c2097e258fcedfc02ed4a66d45fb4238
>
> drivers/virtio/virtio_pci_common.c | 20 ++++++++++++++++++++
> drivers/virtio/virtio_pci_modern.c | 14 ++++++++++++++
> include/uapi/linux/virtio_config.h | 7 ++++++-
> 3 files changed, 40 insertions(+), 1 deletion(-)
>

<snip>

> diff --git a/include/uapi/linux/virtio_config.h
> b/include/uapi/linux/virtio_config.h
> index 308e2096291f..b7c1f4e7d59e 100644
> --- a/include/uapi/linux/virtio_config.h
> +++ b/include/uapi/linux/virtio_config.h
> @@ -49,7 +49,7 @@

There is a value in the comment directly before this that should
be updated as well to be consistent with the new value for
VIRTIO_TRANSPORT_F_END below.

> * transport being used (eg. virtio_ring), the rest are per-device feature
> * bits. */
> #define VIRTIO_TRANSPORT_F_START 28
> -#define VIRTIO_TRANSPORT_F_END 34
> +#define VIRTIO_TRANSPORT_F_END 38
>
> #ifndef VIRTIO_CONFIG_NO_LEGACY
> /* Do we get callbacks when the ring is completely used, even if we've

<snip>

--
Mark Rustad, Networking Division, Intel Corporation
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