Re: [PATCH] vhost: configure all host notifiers in a single MR transaction

[Stefan Hajnoczi]

On Fri, 18 Nov 2022 at 09:51, Longpeng(Mike) via <qemu-devel@nongnu.org> wrote:
>
> From: Longpeng <longpeng2@huawei.com>
>
> This allows the vhost device to batch the setup of all its host notifiers.
> This significantly reduces the device starting time, e.g. the vhost-vDPA
> generic device [1] start time reduce from 376ms to 9.1ms for a VM with
> 64 vCPUs and 3 vDPA device(64vq per device).
>
> [1] https://www.mail-archive.com/qemu-devel@nongnu.org/msg921541.html
>
> Signed-off-by: Longpeng <longpeng2@huawei.com>
> ---
>  hw/virtio/vhost.c | 39 ++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 38 insertions(+), 1 deletion(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>