Support irqfd/queuefd. The last one only with kvm, that's okay because vhost relies on kvm anyway.
Signed-off-by: Michael S. Tsirkin <m...@redhat.com> --- hw/virtio-pci.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index 6d0f9dd..5a3be6b 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -23,6 +23,7 @@ #include "msix.h" #include "net.h" #include "loader.h" +#include "kvm.h" /* from Linux's linux/virtio_pci.h */ @@ -388,6 +389,29 @@ static unsigned virtio_pci_get_features(void *opaque) return proxy->host_features; } +static void virtio_pci_irqfd_read(void *opaque) +{ + VirtQueue *vq = opaque; + virtio_irq(vq->vdev, vq); +} + +static int virtio_pci_irqfd(void * opaque, int n, int fd, bool assign) +{ + VirtIOPCIProxy *proxy = opaque; + VirtQueue *vq = &proxy->vdev->vq[n]; + + qemu_set_fd_handler(fd, assign ? virtio_pci_irqfd_read : NULL, NULL, vq); + return 0; +} + +static int virtio_pci_queuefd(void * opaque, int n, int fd, bool assign) +{ + VirtIOPCIProxy *proxy = opaque; + return kvm_set_ioeventfd(proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, + n, fd, assign); +} + + static const VirtIOBindings virtio_pci_bindings = { .notify = virtio_pci_notify, .save_config = virtio_pci_save_config, @@ -395,6 +419,8 @@ static const VirtIOBindings virtio_pci_bindings = { .save_queue = virtio_pci_save_queue, .load_queue = virtio_pci_load_queue, .get_features = virtio_pci_get_features, + .set_irqfd = virtio_pci_irqfd, + .set_queuefd = virtio_pci_queuefd, }; static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, -- 1.6.6.rc1.43.gf55cc