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virtio_pci: support enabling VFs

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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>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Tiwei Bie 2018-06-01 12:02:39 +08:00 • committed by Michael S. Tsirkin
parent 670ae9caac
commit cfecc2918d
3 changed files with 50 additions and 1 deletions
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7
include/uapi/linux/virtio_config.h
View file

@ -49,7 +49,7 @@
* 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
@ -71,4 +71,9 @@
* this is for compatibility with legacy systems.
*/
#define VIRTIO_F_IOMMU_PLATFORM 33
/*
* Does the device support Single Root I/O Virtualization?
*/
#define VIRTIO_F_SR_IOV 37
#endif /* _UAPI_LINUX_VIRTIO_CONFIG_H */