On Tue, Jan 08, 2013 at 01:39:31PM -0500, Christoffer Dall wrote:
> + /*
> + * Check whether this vcpu requires the cache to be flushed on
> + * this physical CPU. This is a consequence of doing dcache
> + * operations by set/way on this vcpu. We do it here to be in
> + * a non-preemptible section.
> + */
> + if (cpumask_test_cpu(cpu, &vcpu->arch.require_dcache_flush)) {
> + cpumask_clear_cpu(cpu, &vcpu->arch.require_dcache_flush);
There is cpumask_test_and_clear_cpu() which may be better for this.
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