Re: [Xen-devel] [PATCH v4 1/4] xen/arm: observe itargets setting in vgic_enable_irqs and vgic_disable_irqs

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Mon, 9 Jun 2014, Julien Grall wrote:
> On 06/09/2014 11:47 AM, Stefano Stabellini wrote:
> >> Write in GICD_ITARGETSR can be either half-word or word. If I'm not 
> >> mistaken
> >> you sanity check only handle word access.
> > 
> > I realize that it is a bit tricky to read, but this works for both word
> > and half-word accesses.
> 
> I think you have to mask the unused bits in the register. We can't
> assume that they will be all-zeroed.

That's a good hint but I already pass 32 to find_next_bit as max bit to
search for. The rest is ignored.

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