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cpus: don't use atomic_read for vm_clock_warp_start
authorAlex Bennée <alex.bennee@linaro.org>
Mon, 4 Apr 2016 14:35:48 +0000 (15:35 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 5 Apr 2016 09:46:52 +0000 (11:46 +0200)
commitccffff48c93c30733783b05cd1ef843a4c274653
tree25b3be1fc0fef438d0901d5537f627ed466a5de0tree
parenta89ef0c357abfbf1f76e2d7418fe3c880e0364bdcommit | diff
cpus: don't use atomic_read for vm_clock_warp_start

As vm_clock_warp_start is a 64 bit value this causes problems for the
compiler trying to come up with a suitable atomic operation on 32 bit
hosts. Because the variable is protected by vm_clock_seqlock, we check its
value inside a seqlock critical section.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1459780549-12942-2-git-send-email-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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