From: Christoffer Dall <christoffer.dall@linaro.org>
Date: Mon, 22 Sep 2014 20:10:36 +0000 (+0200)
Subject: arm/arm64: KVM: Fix unaligned access bug on gicv2 access
X-Git-Tag: fixes-for-v3.18-merge-window~84^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f2bb4acc125edc2c06db3ad3e8c699bc075ad52;p=pandora-kernel.git

arm/arm64: KVM: Fix unaligned access bug on gicv2 access

We were using an atomic bitop on the vgic_v2.vgic_elrsr field which was
not aligned to the natural size on 64-bit platforms.  This bug showed up
after QEMU correctly identifies the pl011 line as being level-triggered,
and not edge-triggered.

These data structures are protected by a spinlock so simply use a
non-atomic version of the accessor instead.

Tested-by: Joel Schopp <joel.schopp@amd.com>
Reported-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---

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