Re: [Xen-devel] [PATCH v2 11/15] xen/arm: vgic-v2: Correctly handle RAZ/WI registers

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2015-02-02 at 16:36 +0000, Julien Grall wrote:
> Hi Ian,
> 
> On 02/02/15 16:02, Ian Campbell wrote:
> > On Thu, 2015-01-29 at 18:25 +0000, Julien Grall wrote:
> >> Some of the registers are accessible via multiple size (see 
> >> GICD_IPRIORITYR*).
> > 
> > They are byte accessible, but are they half word accessible? I suspect
> > not.
> 
> Only byte accessible.

I think we might need a read_as_zero_8_32 then, i.e. explicitly list the
sizes which are allowed, and perhaps omit the un-suffixed version for so
it's clear exactly what is what, although that might be more churn than
you want to have here.

Ian.


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