Re: [PATCH v2 13/25] KVM: arm64: vgic-v3: Add ICV_BPR0_EL1 handler

Peter Maydell
2017-06-06T17:36:21Z

On 6 June 2017 at 18:23, Christoffer Dall <cdall@linaro.org> wrote:
> On Tue, Jun 06, 2017 at 04:56:27PM +0100, Peter Maydell wrote:
>> This depends whether you're talking about the ICC/ICV BPR0/BPR1 registers,
>> or the fields in the ICH_VMCR*. For the former, if CBPR is set then
>> BPR1 reads and writes affect BPR0.
>
> From the spec on ICV_BPR1_EL1: "Non-secure EL1 writes are ignored".
> Doesn't that mean that reads of BPR1 reflect BPR0 but writes are
> ignored?

Yes, you're right.

thanks
-- PMM