On Thu, Feb 17, 2022 at 02:32:48AM -0500, Michael S. Tsirkin wrote:
On Tue, Feb 15, 2022 at 12:52:31PM +0530, Gautam Dawar wrote:
This patch adds the ability to negotiate VIRTIO_F_IN_ORDER bit
for vhost-vdpa backend when the underlying device supports this
feature.
This would aid in reaping performance benefits with HW devices
that implement this feature. At the same time, it shouldn't have
any negative impact as vhost-vdpa backend doesn't involve any
userspace virtqueue operations.
Signed-off-by: Gautam Dawar <gda...@xilinx.com>
Having features that hardware implements but qemu does not
means we can't migrate between them.
So I'd rather see a userspace implementation.
FYI Jason proposed to support VIRTIO_F_IN_ORDER in QEMU/Linux as an idea
for the next GSoC/Outreachy. I offered to mentor and prepared a project
description [1], if anyone else is interested, it would be great to have
a co-mentor :-)
Thanks,
Stefano
[1] https://lists.gnu.org/archive/html/qemu-devel/2022-02/msg04032.html
