RE: [PATCH for-4.14 v2 2/2] x86/passthrough: introduce a flag for GSIs not requiring an EOI or unmask

[Paul Durrant <xadimgnik@xxxxxxxxx>]

> -----Original Message-----
> From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Sent: 11 June 2020 17:26
> To: Roger Pau Monne <roger.pau@xxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx
> Cc: paul@xxxxxxx; Jan Beulich <jbeulich@xxxxxxxx>; Wei Liu <wl@xxxxxxx>
> Subject: Re: [PATCH for-4.14 v2 2/2] x86/passthrough: introduce a flag for 
> GSIs not requiring an EOI
> or unmask
> 
> On 10/06/2020 15:29, Roger Pau Monne wrote:
> > There's no need to setup a timer for GSIs that are edge triggered,
> > since those don't require any EIO or unmask, and hence couldn't block
> > other interrupts.
> >
> > Note this is only used by PVH dom0, that can setup the passthrough of
> > edge triggered interrupts from the vIO-APIC. One example of such kind
> > of interrupt that can be used by a PVH dom0 would be the RTC timer.
> >
> > While there introduce an out label to do the unlock and reduce code
> > duplication.
> >
> > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> 
> Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Release-acked-by: Paul Durrant <paul@xxxxxxx>