Re: [Android-virt] [PATCH v5 04/13] ARM: KVM: Memory virtualization setup

[Christoffer Dall]

On Mon, Dec 12, 2011 at 10:49 AM, Avi Kivity <a...@redhat.com> wrote:
> On 12/12/2011 05:25 PM, Peter Maydell wrote:
>> On 12 December 2011 15:15, Avi Kivity <a...@redhat.com> wrote:
>> > We need to differentiate in how Linux-as-a-guest acts and how the cpu is
>> > supposed to work.  A guest operating system can theoretically assign the
>> > ASID x to process A running on vcpu 0, and the same ASID x to process B
>> > running on vcpu 1
>>
>> That would be a guest bug. From the ARM ARM:
>> "For a symmetric multiprocessor cluster where a single operating system
>> is running on the set of processing elements, ARMv7 requires all ASID
>> values to be assigned uniquely within any single Inner Shareable domain.
>> In other words, each ASID value must have the same meaning to all
>> processing elements in the system."
>
> Thanks.  So per-vm vmids should work.
>
yep.
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