mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-26 21:10:42 +00:00
108a64818e
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>
18 lines
576 B
ReStructuredText
18 lines
576 B
ReStructuredText
=====================
|
|
Vhost-vdpa Protocol
|
|
=====================
|
|
|
|
Introduction
|
|
=============
|
|
vDPA(Virtual data path acceleration) device is a device that uses
|
|
a datapath which complies with the virtio specifications with vendor
|
|
specific control path. vDPA devices can be both physically located on
|
|
the hardware or emulated by software.
|
|
|
|
This document describes the vDPA support in qemu
|
|
|
|
Here is the kernel commit here
|
|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c8cf31885f69e86be0b5b9e6677a26797365e1d
|
|
|
|
TODO : More information will add later
|