diff mbox series

[RFC,1/4] vduse: Add the struct to save the vq reconnect info

Message ID 20230628065919.54042-2-lulu@redhat.com
State New
Headers
Series reconnect support in vduse |

Commit Message

Cindy Lu June 28, 2023, 6:59 a.m. UTC 
  From: Your Name <you@example.com>

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@redhat.com>
---
 drivers/vdpa/vdpa_user/vduse_dev.c | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Jason Wang June 28, 2023, 8:03 a.m. UTC | #1 
On Wed, Jun 28, 2023 at 2:59 PM Cindy Lu <lulu@redhat.com> wrote:
>
> From: Your Name <you@example.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@redhat.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

>
>  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
>
Cindy Lu July 1, 2023, 9:24 a.m. UTC | #2 
On Wed, Jun 28, 2023 at 4:04 PM Jason Wang <jasowang@redhat.com> wrote:
>
> On Wed, Jun 28, 2023 at 2:59 PM Cindy Lu <lulu@redhat.com> wrote:
> >
> > From: Your Name <you@example.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@redhat.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
> >
>
Jason Wang July 3, 2023, 6:25 a.m. UTC | #3 
On Sat, Jul 1, 2023 at 5:25 PM Cindy Lu <lulu@redhat.com> wrote:
>
> On Wed, Jun 28, 2023 at 4:04 PM Jason Wang <jasowang@redhat.com> wrote:
> >
> > On Wed, Jun 28, 2023 at 2:59 PM Cindy Lu <lulu@redhat.com> wrote:
> > >
> > > From: Your Name <you@example.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@redhat.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

I may miss something but having this to be part of the uAPI seems more
than enough.

Or what would this new ioctl do?

Thanks

> 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
> > >
> >
>
Maxime Coquelin July 11, 2023, 2:16 p.m. UTC | #4 
Hello Cindy,

On 6/28/23 08:59, Cindy Lu wrote:
> From: Your Name <you@example.com>
> 
> 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@redhat.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;
> +};
>   
>   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];

Why 64?
Shouldn't it be part of struct vduse_virtqueue instead?

>   };
>   
>   struct vduse_dev_msg {
diff mbox series

Patch

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;
+};
 
 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 {