From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [PATCH V13 5/7] xen/arm: Instruction prefetch abort
 (X) mem_event handling
Date: Mon, 23 Mar 2015 15:18:07 +0000
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Cc: Ian Jackson <ian.jackson@eu.citrix.com>, Julien Grall <julien.grall@linaro.org>, stefano.stabellini@citrix.com, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, xen-devel@lists.xen.org
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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.