[PATCH v2] arm: KVM: Fix idmap overlap detection when the kernel is idmap'ed

Christoffer Dall christoffer.dall at linaro.org
Thu Aug 25 11:34:44 PDT 2016


On Mon, Aug 22, 2016 at 09:01:17AM +0100, Marc Zyngier wrote:
> We're trying hard to detect when the HYP idmap overlaps with the
> HYP va, as it makes the teardown of a cpu dangerous. But there is
> one case where an overlap is completely safe, which is when the
> whole of the kernel is idmap'ed, which is likely to happen on 32bit
> when RAM is at 0x8000000 and we're using a 2G/2G VA split.
> 
> In that case, we can proceed safely.
> 
> Reported-by: Christoffer Dall <christoffer.dall at linaro.org>
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>

Thanks, applied.

-Christoffer



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