Re: [Qemu-devel] [PATCH v1 0/6] Extend vhost-user to support VFIO based accelerators

2018-01-25 Thread Stefan Hajnoczi
t;> m...@redhat.com; alex.william...@redhat.com; jasow...@redhat.com; >> pbonz...@redhat.com; stefa...@redhat.com; Tan, Jianfeng >> ; Liang, Cunming ; >> Wang, Xiao W ; Wang, Zhihong >> ; Daly, Dan >> Subject: Re: [Qemu-devel] [PATCH v1 0/6] Extend vhost-user to s

Re: [Qemu-devel] [PATCH v1 0/6] Extend vhost-user to support VFIO based accelerators

2018-01-25 Thread Liang, Cunming
; pbonz...@redhat.com; stefa...@redhat.com; Tan, Jianfeng > ; Liang, Cunming ; > Wang, Xiao W ; Wang, Zhihong > ; Daly, Dan > Subject: Re: [Qemu-devel] [PATCH v1 0/6] Extend vhost-user to support > VFIO based accelerators > > On Thu, Jan 25, 2018 at 12:03:22PM +0800, Tiwe

Re: [Qemu-devel] [PATCH v1 0/6] Extend vhost-user to support VFIO based accelerators

2018-01-25 Thread Stefan Hajnoczi
On Thu, Jan 25, 2018 at 12:03:22PM +0800, Tiwei Bie wrote: > Why extend vhost-user for vDPA > == > > We have already implemented various virtual switches (e.g. OVS-DPDK) > based on vhost-user for VMs in the Cloud. They are purely software > running on CPU cores. When we

[Qemu-devel] [PATCH v1 0/6] Extend vhost-user to support VFIO based accelerators

2018-01-24 Thread Tiwei Bie
This patch set does some small extensions to vhost-user protocol to support VFIO based accelerators, and makes it possible to get the similar performance of VFIO based PCI passthru while keeping the virtio device emulation in QEMU. How does accelerator accelerate vhost (data path)