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hw/virtio: fix Link Control Register for PCI Express virtio devices

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Make several Link Control Register flags writable to conform
with the PCI Express spec.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2017-02-20 22:43:12 +02:00 • committed by Michael S. Tsirkin
parent c2cabb3422
commit d584f1b9ca
5 changed files with 33 additions and 0 deletions
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4
hw/virtio/virtio-pci.h
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@ -74,6 +74,7 @@ enum {
VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
VIRTIO_PCI_FLAG_ATS_BIT,
VIRTIO_PCI_FLAG_INIT_DEVERR_BIT,
VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT,
};
/* Need to activate work-arounds for buggy guests at vmstate load. */
@ -104,6 +105,9 @@ enum {
/* Init error enabling flags */
#define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT)
/* Init Link Control register */
#define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT)
typedef struct {
MSIMessage msg;
int virq;