Re: [Xen-devel] [PATCH V13 5/7] xen/arm: Instruction prefetch abort (X) mem_event handling

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Mon, 2015-03-23 at 15:15 +0000, Ian Campbell wrote:
> _But_ I suppose you are not really worried about the guest doing a PT
> update, but rather xenaccess playing games with the stage 2 behind the
> guest's back, which might require us to do some TLB shootdowns, and we'd
> have to assume both I-TLB and D-TLB since we don't know what the guest
> has in those pages.

When we change the p2m we do a tlbi vmalle1is, so regardless of whether
split tlb is a thing we are flushing everything, so we should be good
from a stage 2 PoV.



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