[PATCH] ARM: KVM: iterate over all CPUs for CPU compatibility check

[Peter Maydell]

On 17 April 2013 13:28, Marc Zyngier <marc.zyngier at arm.com> wrote:
> On 17/04/13 13:25, Peter Maydell wrote:
>> On 17 April 2013 13:24, Marc Zyngier <marc.zyngier at arm.com> wrote:
>>> On 17/04/13 12:38, Peter Maydell wrote
>>>> Who says the code should support running on big.LITTLE?
>>>
>>> I do. The host code definitely should. If it doesn't, then lets fix that
>>> bug, as it probably means the support is also broken on A15.
>>
>> Last time I looked we weren't intercepting ID and feature
>> registers. That's broken if the host isn't A15.
>
> Would you please look at the sentence that follows the one you've
> quoted? It says "guest support is a separate issue". As in "orthogonal
> problem".

I'm confused now, because I thought the whole point of this
patch was that we don't support guests on big.LITTLE but
we're not locking them out (the way we would for an all-A7
system). That is, we're fixing a bug in the check code.

Obviously it seems worth investigating exactly what is
happening on the A7s when we try to run the init code,
but it seems to me like that's the orthogonal issue,
because we shouldn't be running that code in the first
place.

-- PMM