Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-02-07 Thread Michael S. Tsirkin
On Wed, Feb 07, 2018 at 10:02:24AM -0800, Alexander Duyck wrote: > On Wed, Feb 7, 2018 at 8:43 AM, Michael S. Tsirkin wrote: > > On Sun, Feb 04, 2018 at 01:49:46PM -0800, Alexander Duyck wrote: > >> On Thu, Jan 25, 2018 at 9:57 PM, Tiwei Bie wrote: > >> > On

Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-02-07 Thread Alexander Duyck
On Wed, Feb 7, 2018 at 8:43 AM, Michael S. Tsirkin wrote: > On Sun, Feb 04, 2018 at 01:49:46PM -0800, Alexander Duyck wrote: >> On Thu, Jan 25, 2018 at 9:57 PM, Tiwei Bie wrote: >> > On Fri, Jan 26, 2018 at 11:41:27AM +0800, Jason Wang wrote: >> >> On

Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-02-07 Thread Michael S. Tsirkin
On Sun, Feb 04, 2018 at 01:49:46PM -0800, Alexander Duyck wrote: > On Thu, Jan 25, 2018 at 9:57 PM, Tiwei Bie wrote: > > On Fri, Jan 26, 2018 at 11:41:27AM +0800, Jason Wang wrote: > >> On 2018年01月26日 07:59, Michael S. Tsirkin wrote: > >> > > The virtual IOMMU isn't supported

Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-02-04 Thread Alexander Duyck
On Thu, Jan 25, 2018 at 9:57 PM, Tiwei Bie wrote: > On Fri, Jan 26, 2018 at 11:41:27AM +0800, Jason Wang wrote: >> On 2018年01月26日 07:59, Michael S. Tsirkin wrote: >> > > The virtual IOMMU isn't supported by the accelerators for now. >> > > Because vhost-user currently lacks

Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-01-25 Thread Tiwei Bie
On Fri, Jan 26, 2018 at 11:41:27AM +0800, Jason Wang wrote: > On 2018年01月26日 07:59, Michael S. Tsirkin wrote: > > > The virtual IOMMU isn't supported by the accelerators for now. > > > Because vhost-user currently lacks of an efficient way to share > > > the IOMMU table in VM to vhost backend.

Re: [Qemu-devel] [virtio-dev] Re: [PATCH v1 6/6] vhost-user: add VFIO based accelerators support

2018-01-25 Thread Jason Wang
On 2018年01月26日 07:59, Michael S. Tsirkin wrote: The virtual IOMMU isn't supported by the accelerators for now. Because vhost-user currently lacks of an efficient way to share the IOMMU table in VM to vhost backend. That's why the software implementation of virtual IOMMU support in vhost-user