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| author | Cindy Lu <lulu@redhat.com> | 2020-07-01 22:55:37 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-07-07 07:59:51 -0400 |
| commit | 108a64818e69be0a97cde3838d768f2d9910c08b (patch) | |
| tree | a60b587a2ff2b704dac731d9886bc8c30c7d0d0c /hw/virtio/vhost-backend.c | |
| parent | 38140cc4d9713dc9af78090503105bf9c82b6bff (diff) | |
| download | qemu-108a64818e69be0a97cde3838d768f2d9910c08b.zip qemu-108a64818e69be0a97cde3838d768f2d9910c08b.tar.gz qemu-108a64818e69be0a97cde3838d768f2d9910c08b.tar.bz2 | |
vhost-vdpa: introduce vhost-vdpa backend
Currently we have 2 types of vhost backends in QEMU: vhost kernel and
vhost-user. The above patch provides a generic device for vDPA purpose,
this vDPA device exposes to user space a non-vendor-specific configuration
interface for setting up a vhost HW accelerator, this patch set introduces
a third vhost backend called vhost-vdpa based on the vDPA interface.
Vhost-vdpa usage:
qemu-system-x86_64 -cpu host -enable-kvm \
......
-netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-id,id=vhost-vdpa0 \
-device virtio-net-pci,netdev=vhost-vdpa0,page-per-vq=on \
Signed-off-by: Lingshan zhu <lingshan.zhu@intel.com>
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Cindy Lu <lulu@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20200701145538.22333-14-lulu@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw/virtio/vhost-backend.c')
| -rw-r--r-- | hw/virtio/vhost-backend.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/virtio/vhost-backend.c b/hw/virtio/vhost-backend.c index 4890538..782b1d6 100644 --- a/hw/virtio/vhost-backend.c +++ b/hw/virtio/vhost-backend.c @@ -15,6 +15,7 @@ #include "qemu/main-loop.h" #include "standard-headers/linux/vhost_types.h" +#include "hw/virtio/vhost-vdpa.h" #ifdef CONFIG_VHOST_KERNEL #include <linux/vhost.h> #include <sys/ioctl.h> @@ -286,6 +287,11 @@ int vhost_set_backend_type(struct vhost_dev *dev, VhostBackendType backend_type) dev->vhost_ops = &user_ops; break; #endif +#ifdef CONFIG_VHOST_VDPA + case VHOST_BACKEND_TYPE_VDPA: + dev->vhost_ops = &vdpa_ops; + break; +#endif default: error_report("Unknown vhost backend type"); r = -1; |