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virtio, vhost: features, fixes

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VF support for virtio.
 DMA barriers for virtio strong barriers.
 Bugfixes.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "virtio, vhost: features, fixes

   - PCI virtual function support for virtio

   - DMA barriers for virtio strong barriers

   - bugfixes"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: update the comments for transport features
  virtio_pci: support enabling VFs
  vhost: fix info leak due to uninitialized memory
  virtio_ring: switch to dma_XX barriers for rpmsg
This commit is contained in:
Linus Torvalds 2018-06-16 06:35:02 +09:00
commit 2f3f056685
5 changed files with 61 additions and 6 deletions
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16
include/uapi/linux/virtio_config.h
View file

@ -45,11 +45,14 @@
/* We've given up on this device. */
#define VIRTIO_CONFIG_S_FAILED 0x80
/* Some virtio feature bits (currently bits 28 through 32) are reserved for the
* transport being used (eg. virtio_ring), the rest are per-device feature
* bits. */
/*
* Virtio feature bits VIRTIO_TRANSPORT_F_START through
* VIRTIO_TRANSPORT_F_END are reserved for the transport
* being used (e.g. virtio_ring, virtio_pci etc.), 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 +74,9 @@
* 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 */