On Tue, Feb 18, 2020 at 01:56:12PM +0000, Jason Gunthorpe wrote: > On Mon, Feb 17, 2020 at 02:08:03PM +0800, Jason Wang wrote: > > > I thought you were copied in the patch [1], maybe we can move vhost related > > discussion there to avoid confusion. > > > > [1] https://lwn.net/Articles/811210/ > > Wow, that is .. confusing. > > So this is supposed to duplicate the uAPI of vhost-user? But it is > open coded and duplicated because .. vdpa? Do you mean the vhost-user in DPDK? There is no vhost-user in Linux kernel. Thanks, Tiwei > > > So it's cheaper and simpler to introduce a new bus instead of refactoring a > > well known bus and API where brunches of drivers and devices had been > > implemented for years. > > If you reason for this approach is to ease the implementation then you > should talk about it in the cover letters/etc > > Maybe it is reasonable to do this because the rework is too great, I > don't know, but to me this whole thing looks rather messy. > > Remember this stuff is all uAPI as it shows up in sysfs, so you can > easilly get stuck with it forever. > > Jason
