Re: [PATCH v3 0/2] KVM: ARM: Enable vtimers with user space gic

Ard Biesheuvel
2016-09-17T16:47:50Z

On 17 September 2016 at 16:38, Peter Maydell <peter.maydell@linaro.org> wrote:
> On 17 September 2016 at 16:28, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>> Another thing to keep in mind is that GICv2
>> compatibility is disabled on the non-secure side if the secure side
>> elects to configure its view of the GIC as v3 (i.e., in order to
>> support >8 cores)
>
> If I'm reading the 'legacy configurations' chapter of the GICv3
> spec correctly, that is true for the NS host OS (ie the one
> handling physical interrupts) but a guest OS can still use
> the old GICv2-compat interface (assuming it was implemented
> in silicon at all).
>

Ah right, apologies for spreading misinformation. But my first point
is still valid.