Re: [PATCH v3 3/4] xen/interface: re-define FRONT/BACK_RING_ATTACH()

[JÃrgen GroÃ]

On 12.12.19 07:04, JÃrgen Groà wrote:
> On 11.12.19 16:29, Paul Durrant wrote:
> > Currently these macros are defined to re-initialize a front/back ring
> > (respectively) to values read from the shared ring in such a way that any
> > requests/responses that are added to the shared ring whilst the 
> > front/back
> > is detached will be skipped over. This, in general, is not a desirable
> > semantic since most frontend implementations will eventually block 
> > waiting
> > for a response which would either never appear or never be processed.
> >
> > Since the macros are currently unused, take this opportunity to re-define
> > them to re-initialize a front/back ring using specified values. This also
> > allows FRONT/BACK_RING_INIT() to be re-defined in terms of
> > FRONT/BACK_RING_ATTACH() using a specified value of 0.
> >
> > NOTE: BACK_RING_ATTACH() will be used directly in a subsequent patch.
> >
> > Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
>
> Reviewed-by: Juergen Gross <jgross@xxxxxxxx>

Paul, I think you should send a patch changing ring.h in the Xen tree.

As soon as it has been accepted I'll take your series for the kernel.


Juergen