Re: [PATCH v5 12/13] ARM: KVM: Fix guest view of MPIDR

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On Mon, Dec 12, 2011 at 12:44 PM, Marc Zyngier <marc.zyngier@xxxxxxx> wrote:
> On 12/12/11 17:39, Christoffer Dall wrote:
>> On Mon, Dec 12, 2011 at 9:32 AM, Avi Kivity <avi@xxxxxxxxxx> wrote:
>>> On 12/11/2011 12:25 PM, Christoffer Dall wrote:
>>>> From: Marc Zyngier <marc.zyngier@xxxxxxx>
>>>>
>>>> A guest may need to know which CPU it has booted on (and Linux does).
>>>> Now that we can run KVM on a SMP host, QEMU may be running on any
>>>
>>> s/QEMU/userspace/
>>>
>>>> CPU. In that case, directly reading MPIDR will give an inconsistent
>>>> view on the guest CPU number (among other problems).
>>>>
>>>> The solution is to use the VMPIDR register, which is computed by
>>>> using the host MPIDR and overriding the low bits with KVM vcpu_id.
>>>>
>>>> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
>>>
>>> Since you're posting the patch for (eventual) inclusion, you need to
>>> sign off as well.
>>>
>> I merged this into the world-switch patch.
>>
>> Can I add mark as signed-off-by in there then or should he really have
>> written that entire patch then. Marc?
>
> I don't mind if my name appears or not, really. As long as the
> functionality is in, I'm happy ;-).
>
ok, focus will be on patch readability for next round then. thanks.
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