dd1f63493a
There is a potential race if several threads exit at once. To serialise the exits extend the lock above the initial checking of the CPU list. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20160930213106.20186-11-alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>