Re: [Xen-devel] [PATCH 3/4] xen/interface: don't discard pending work in FRONT/BACK_RING_ATTACH

[Jürgen Groß <jgross@xxxxxxxx>]

On 09.12.19 12:41, Roger Pau Monné wrote:
> On Thu, Dec 05, 2019 at 02:01:22PM +0000, Paul Durrant wrote:
> > Currently these macros will skip over any requests/responses that are
> > added to the shared ring whilst it is detached. 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.
> >
> > NOTE: These macros are currently unused. BACK_RING_ATTACH(), however, will
> >        be used in a subsequent patch.
> >
> > Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
> Those headers come from Xen, and should be modified in Xen first and
> then imported into Linux IMO.
In theory, yes. But the Xen variant doesn't contain the ATTACH macros.


Juergen

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