linux-kernel - Re: [RFC V1 08/13] vduse: flush workers on suspend

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Message-ID: <CACGkMEuJ4yf4reW2SzDqgNZGBWo5Rcqeg+cFS=N7pa_gQmmDXg@mail.gmail.com>
Date: Thu, 11 Jan 2024 11:09:35 +0800
From: Jason Wang <jasowang@...hat.com>
To: Steve Sistare <steven.sistare@...cle.com>
Cc: virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, 
	"Michael S. Tsirkin" <mst@...hat.com>, Si-Wei Liu <si-wei.liu@...cle.com>, 
	Eugenio Perez Martin <eperezma@...hat.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
	Dragos Tatulea <dtatulea@...dia.com>, Eli Cohen <elic@...dia.com>, 
	Xie Yongji <xieyongji@...edance.com>
Subject: Re: [RFC V1 08/13] vduse: flush workers on suspend

On Thu, Jan 11, 2024 at 4:40 AM Steve Sistare <steven.sistare@...cle.com> wrote:
>
> To pass ownership of a live vdpa device to a new process, the user
> suspends the device, calls VHOST_NEW_OWNER to change the mm, and calls
> VHOST_IOTLB_REMAP to change the user virtual addresses to match the new
> mm.  Flush workers in suspend to guarantee that no worker sees the new
> mm and old VA in between.
>
> Signed-off-by: Steve Sistare <steven.sistare@...cle.com>

It seems we need a better title, probably "suspend support for vduse"?
And it looks better to be an separate patch.

Thanks