From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] arm: KVM: Fix idmap overlap detection when the kernel is idmap'ed
Date: Thu, 25 Aug 2016 20:34:44 +0200 [thread overview]
Message-ID: <20160825183444.GA13095@lvm> (raw)
In-Reply-To: <1471852877-17197-1-git-send-email-marc.zyngier@arm.com>
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@linaro.org>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Thanks, applied.
-Christoffer
prev parent reply other threads:[~2016-08-25 18:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-22 8:01 [PATCH v2] arm: KVM: Fix idmap overlap detection when the kernel is idmap'ed Marc Zyngier
2016-08-25 18:34 ` Christoffer Dall [this message]
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