Re: [Android-virt] [PATCH v9 00/16] KVM/ARM Implementation

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On 3 July 2012 14:29, Avi Kivity <avi@xxxxxxxxxx> wrote:
> On 07/03/2012 11:59 AM, Christoffer Dall wrote:
>> Additionally a few major milestones are coming up shortly:
>>  - Support Thumb MMIO emulation and test MMIO emulation code (under way)
>>  - Merge Marc Zyngier's patch series for VGIC and timers (review in
>>    progress)
>
> Does it make sense to keep the pre-VGIC interrupt stuff in then?  It
> would be better to support just one setup, but kernel-VGIC is of course
> less flexible than user space.

We've gone back and forth on this one, I think. For an A15 guest
we want to say that userspace GIC isn't permitted (ie you must use
the in-kernel-irqchip). For an A9 guest you would have to use the
userspace GIC, but on the other hand we don't currently actually
support an A9 guest... It seems a little unfortunate to remove
code that is actually working but I could certainly see the
cleanliness argument for dropping it and letting anybody who
wanted an A9 guest put it back later.

-- PMM
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