Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-18 Thread Jason Wang
On 2019/7/10 下午3:22, Jason Wang wrote: Yeah, that's a major concern. If it's true, is it something that's not acceptable? I think not, but I don't know if any other one that care this. And I do see some new RFC for VFIO to add more DMA API. Is there any pointers? I don't remember th

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-10 Thread Jason Wang
On 2019/7/10 下午2:22, Tiwei Bie wrote: On Wed, Jul 10, 2019 at 10:26:10AM +0800, Jason Wang wrote: On 2019/7/9 下午2:33, Tiwei Bie wrote: On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote: On 2019/7/8 下午2:16, Tiwei Bie wrote: On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson w

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-09 Thread Tiwei Bie
On Wed, Jul 10, 2019 at 10:26:10AM +0800, Jason Wang wrote: > On 2019/7/9 下午2:33, Tiwei Bie wrote: > > On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote: > > > On 2019/7/8 下午2:16, Tiwei Bie wrote: > > > > On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote: > > > > > On Thu, 4

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-09 Thread Jason Wang
On 2019/7/9 下午2:33, Tiwei Bie wrote: On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote: On 2019/7/8 下午2:16, Tiwei Bie wrote: On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote: On Thu, 4 Jul 2019 14:21:34 +0800 Tiwei Bie wrote: On Thu, Jul 04, 2019 at 12:31:48PM +0800

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-08 Thread Tiwei Bie
On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote: > On 2019/7/8 下午2:16, Tiwei Bie wrote: > > On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote: > > > On Thu, 4 Jul 2019 14:21:34 +0800 > > > Tiwei Bie wrote: > > > > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote:

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-08 Thread Jason Wang
On 2019/7/8 下午2:16, Tiwei Bie wrote: On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote: On Thu, 4 Jul 2019 14:21:34 +0800 Tiwei Bie wrote: On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: On 2019/7/3 下午9:08, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 08:16:23PM +0800

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-07 Thread Tiwei Bie
On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote: > On Thu, 4 Jul 2019 14:21:34 +0800 > Tiwei Bie wrote: > > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: > > > On 2019/7/3 下午9:08, Tiwei Bie wrote: > > > > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote:

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-05 Thread Alex Williamson
On Thu, 4 Jul 2019 14:21:34 +0800 Tiwei Bie wrote: > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: > > On 2019/7/3 下午9:08, Tiwei Bie wrote: > > > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: > > > > On 2019/7/3 下午7:52, Tiwei Bie wrote: > > > > > On Wed, Jul 03,

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-04 Thread Tiwei Bie
On Fri, Jul 05, 2019 at 08:30:00AM +0800, Jason Wang wrote: > On 2019/7/4 下午3:02, Tiwei Bie wrote: > > On Thu, Jul 04, 2019 at 02:35:20PM +0800, Jason Wang wrote: > > > On 2019/7/4 下午2:21, Tiwei Bie wrote: > > > > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: > > > > > On 2019/7/3 下午9

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-04 Thread Jason Wang
On 2019/7/4 下午3:02, Tiwei Bie wrote: On Thu, Jul 04, 2019 at 02:35:20PM +0800, Jason Wang wrote: On 2019/7/4 下午2:21, Tiwei Bie wrote: On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: On 2019/7/3 下午9:08, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote:

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-04 Thread Tiwei Bie
On Thu, Jul 04, 2019 at 02:35:20PM +0800, Jason Wang wrote: > On 2019/7/4 下午2:21, Tiwei Bie wrote: > > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: > > > On 2019/7/3 下午9:08, Tiwei Bie wrote: > > > > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: > > > > > On 2019/7/3 下午7

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Jason Wang
On 2019/7/4 下午2:21, Tiwei Bie wrote: On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: On 2019/7/3 下午9:08, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: On 2019/7/3 下午7:52, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote:

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Tiwei Bie
On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote: > On 2019/7/3 下午9:08, Tiwei Bie wrote: > > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: > > > On 2019/7/3 下午7:52, Tiwei Bie wrote: > > > > On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote: > > > > > On 2019/7/3 下午5

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Jason Wang
On 2019/7/3 下午9:08, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: On 2019/7/3 下午7:52, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote: On 2019/7/3 下午5:13, Tiwei Bie wrote: Details about this can be found here: https://lwn.net/Artic

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Tiwei Bie
On Wed, Jul 03, 2019 at 12:31:57PM -0600, Alex Williamson wrote: > On Wed, 3 Jul 2019 17:13:39 +0800 > Tiwei Bie wrote: > > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h > > index 8f10748dac79..6c5718ab7eeb 100644 > > --- a/include/uapi/linux/vfio.h > > +++ b/include/uapi/lin

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Alex Williamson
On Wed, 3 Jul 2019 17:13:39 +0800 Tiwei Bie wrote: > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h > index 8f10748dac79..6c5718ab7eeb 100644 > --- a/include/uapi/linux/vfio.h > +++ b/include/uapi/linux/vfio.h > @@ -201,6 +201,7 @@ struct vfio_device_info { > #define VFIO_DEV

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Tiwei Bie
On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote: > On 2019/7/3 下午7:52, Tiwei Bie wrote: > > On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote: > > > On 2019/7/3 下午5:13, Tiwei Bie wrote: > > > > Details about this can be found here: > > > > > > > > https://lwn.net/Articles/75077

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Jason Wang
On 2019/7/3 下午7:52, Tiwei Bie wrote: On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote: On 2019/7/3 下午5:13, Tiwei Bie wrote: Details about this can be found here: https://lwn.net/Articles/750770/ What's new in this version == A new VFIO device type is intro

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Tiwei Bie
On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote: > On 2019/7/3 下午5:13, Tiwei Bie wrote: > > Details about this can be found here: > > > > https://lwn.net/Articles/750770/ > > > > What's new in this version > > == > > > > A new VFIO device type is introduced - v

Re: [RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Jason Wang
On 2019/7/3 下午5:13, Tiwei Bie wrote: Details about this can be found here: https://lwn.net/Articles/750770/ What's new in this version == A new VFIO device type is introduced - vfio-vhost. This addressed some comments from here: https://patchwork.ozlabs.org/cover/9847

[RFC v2] vhost: introduce mdev based hardware vhost backend

2019-07-03 Thread Tiwei Bie
Details about this can be found here: https://lwn.net/Articles/750770/ What's new in this version == A new VFIO device type is introduced - vfio-vhost. This addressed some comments from here: https://patchwork.ozlabs.org/cover/984763/ Below is the updated device interfac