linux-kernel - Re: [PATCH v2 0/5] vduse: Add support for reconnection

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Message-ID: <CACLfguUZR9gw6gZVKOBE1b+ZAOuSWLO8yTULqQfCzJZc8yZHAA@mail.gmail.com>
Date:   Sat, 25 Nov 2023 23:55:36 +0800
From:   Cindy Lu <lulu@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     mst@...hat.com, xieyongji@...edance.com,
        linux-kernel@...r.kernel.org, maxime.coquelin@...hat.com
Subject: Re: [PATCH v2 0/5] vduse: Add support for reconnection

On Wed, Nov 22, 2023 at 2:11 PM Jason Wang <jasowang@...hat.com> wrote:
>
> On Tue, Nov 21, 2023 at 3:30 PM Cindy Lu <lulu@...hat.com> wrote:
> >
> > Here is the reconnect support in vduse,
> >
> > kernel will allocted pages for reconnection
> > userspace need use ioctl VDUSE_GET_RECONNECT_INFO to
> > get the mmap related information and then mapping these pages
> > to userspace.
> > kernel and userspace will use these pages to sync
> > the reconnect information
> > kernel will use VDUSE_VQ_GET_INFO to sync the information
> > userspace App  will call during the "user_app_dev_start()".
>
> It would be better to describe the uAPI instead of duplicating the
> logic of the codes.
>
sure will rewrite this part
> >
> > change in V2
> > 1. Address the comments from v1
>
> It's better to be more verbose here, people can easily forget the
> comments since V1.
>
will fix this problem

> Thanks
>
> > 2. Add the document for reconnect process
> >
> > Cindy Lu (5):
> >   vduse: Add function to get/free the pages for reconnection
> >   vduse: Add file operation for mmap
> >   vduse: Add new ioctl VDUSE_GET_RECONNECT_INFO
> >   vduse: update the vq_info in ioctl
> >   Documentation: Add reconnect process for VDUSE
> >
> >  Documentation/userspace-api/vduse.rst |  29 ++++
> >  drivers/vdpa/vdpa_user/vduse_dev.c    | 198 +++++++++++++++++++++++++-
> >  include/uapi/linux/vduse.h            |  50 +++++++
> >  3 files changed, 276 insertions(+), 1 deletion(-)
> >
> > --
> > 2.34.3
> >
>