From 33c83cb3c1d84b76c8270abe5487e77f83a81b22 Mon Sep 17 00:00:00 2001
From: Marc Zyngier <marc.zyngier@arm.com>
Date: Fri, 1 Feb 2013 18:28:30 +0000
Subject: [PATCH] ARM: KVM: vgic: take distributor lock on sync_hwstate path

Now that the maintenance interrupt handling is actually out of the
handler itself, the code becomes quite racy as we can get preempted
while we process the state.

Wrapping this code around the distributor lock ensures that we're not
preempted and relatively race-free.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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