linux-kernel - Re: [RFC 1/4] vduse: Add the struct to save the vq reconnect info

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Message-ID: <CACLfguWx2hjNyyVC_JM1VBCGj3AqRZsygHJ3JGcb8erknBo-sA@mail.gmail.com>
Date:   Sat, 1 Jul 2023 17:24:57 +0800
From:   Cindy Lu <lulu@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     mst@...hat.com, maxime.coquelin@...hat.com,
        xieyongji@...edance.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [RFC 1/4] vduse: Add the struct to save the vq reconnect info

On Wed, Jun 28, 2023 at 4:04 PM Jason Wang <jasowang@...hat.com> wrote:
>
> On Wed, Jun 28, 2023 at 2:59 PM Cindy Lu <lulu@...hat.com> wrote:
> >
> > From: Your Name <you@...mple.com>
>
> It looks to me your git is not properly configured.
>
> >
> > this struct is to save the reconnect info struct, in this
> > struct saved the page info that alloc to save the
> > reconnect info
> >
> > Signed-off-by: Cindy Lu <lulu@...hat.com>
> > ---
> >  drivers/vdpa/vdpa_user/vduse_dev.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
> > index 26b7e29cb900..f845dc46b1db 100644
> > --- a/drivers/vdpa/vdpa_user/vduse_dev.c
> > +++ b/drivers/vdpa/vdpa_user/vduse_dev.c
> > @@ -72,6 +72,12 @@ struct vduse_umem {
> >         struct page **pages;
> >         struct mm_struct *mm;
> >  };
> > +struct vdpa_reconnect_info {
> > +       u32 index;
> > +       phys_addr_t addr;
> > +       unsigned long vaddr;
> > +       phys_addr_t size;
> > +};
>
> Please add comments to explain each field. And I think this should be
> a part of uAPI?
>
> Thanks
>
Will add the new ioctl for this information
Thanks
Cindy
> >
> >  struct vduse_dev {
> >         struct vduse_vdpa *vdev;
> > @@ -106,6 +112,7 @@ struct vduse_dev {
> >         u32 vq_align;
> >         struct vduse_umem *umem;
> >         struct mutex mem_lock;
> > +       struct vdpa_reconnect_info reconnect_info[64];
> >  };
> >
> >  struct vduse_dev_msg {
> > --
> > 2.34.3
> >
>