Re: [Qemu-devel] [PATCH 3/3] arm_gic: Do not force PPIs to edge-triggered mode

[Christoffer Dall <christoffer.dall@linaro.org>]

On Mon, Aug 18, 2014 at 02:52:47PM +0200, Adam Lackorzynski wrote:
> On Mon Aug 18, 2014 at 14:48:15 +0200, Christoffer Dall wrote:
> > On Sat, Aug 16, 2014 at 09:48:21PM +0200, Adam Lackorzynski wrote:
> > > Only SGIs must be WI, done by forcing them to their default
> > > (edge-triggered).
> > > 
> > > Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
> > > ---
> > >  hw/intc/arm_gic.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c
> > > index e546647..55019c9 100644
> > > --- a/hw/intc/arm_gic.c
> > > +++ b/hw/intc/arm_gic.c
> > > @@ -558,7 +558,7 @@ static void gic_dist_writeb(void *opaque, hwaddr offset,
> > >          irq = (offset - 0xc00) * 4 + GIC_BASE_IRQ;
> > >          if (irq >= s->num_irq)
> > >              goto bad_reg;
> > > -        if (irq < GIC_INTERNAL)
> > > +        if (irq < GIC_NR_SGIS)
> > >              value |= 0xaa;
> > >          for (i = 0; i < 4; i++) {
> > >              if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
> > > -- 
> > > 2.1.0.rc1
> > > 
> > 
> > where do we ensure that the SGIs are actually configured as
> > edge-triggered when creating the gic?
> 
> It's setup in arm_gic_common_reset() in arm_gic_common.c.
> (Looks like I should add another change to use GIC_NR_SGIS there too.)
> 
That would be good, for this patch:

Acked-by: Christoffer Dall <christoffer.dall@linaro.org>


Thanks!