> -----Original Message----- > From: Juergen Gross [mailto:[email protected]] > Sent: 22 September 2016 11:39 > To: Paul Durrant <[email protected]>; [email protected]; > [email protected]; [email protected] > Cc: Wei Liu <[email protected]> > Subject: Re: [Xen-devel] [PATCH resend] xen-netback: switch to threaded irq > for control ring > > On 22/09/16 12:31, Paul Durrant wrote: > >> -----Original Message----- > >> From: Juergen Gross [mailto:[email protected]] > >> Sent: 22 September 2016 11:17 > >> To: Paul Durrant <[email protected]>; > >> [email protected]; [email protected] > >> <[email protected]>; linux- [email protected] > >> Cc: Wei Liu <[email protected]> > >> Subject: Re: [Xen-devel] [PATCH resend] xen-netback: switch to > >> threaded irq for control ring > >> > >> On 22/09/16 11:09, Paul Durrant wrote: > >>>> -----Original Message----- > >>>> From: Xen-devel [mailto:[email protected]] On Behalf > >>>> Of Juergen Gross > >>>> Sent: 22 September 2016 10:03 > >>>> To: [email protected]; [email protected]; linux- > >>>> [email protected] > >>>> Cc: Juergen Gross <[email protected]>; Wei Liu <[email protected]> > >>>> Subject: [Xen-devel] [PATCH resend] xen-netback: switch to threaded > >>>> irq for control ring > >>>> > >>>> Instead of open coding it use the threaded irq mechanism in xen- > netback. > >>>> > >>>> Signed-off-by: Juergen Gross <[email protected]> > >>> > >>> How have you tested this change? > >> > >> Only compile-tested and loaded the module. As this feature isn't > >> being used in linux netfront AFAIK it is not easily testable. OTOH > >> the code modification is rather limited and I've used the threaded > >> irq in the Xen scsiback driver myself, so I'm rather confident it will > >> work. > >> > > > > OK. How about doing the rx interrupt/task too so that it can be easily > tested with a linux netfront? > > I'd like to, but this would require some more work. The rx kthread isn't > activated by an event only, but by a timer, too. This isn't easy to map to the > threaded irq framework. If, however, you are confident the timer isn't really > necessary I'd be happy to provide a patch switching the rx task to the > threaded irq, too. > > And to be honest: this wouldn't verify that the control ring related patch is > really working. The mechanism itself _is_ working as it is already in use in > xen-scsiback in a very similar environment. >
Ok. If you have confidence then... Reviewed-by: Paul Durrant <[email protected]> > > Juergen
