4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Thomas Gleixner <[email protected]> commit 9ac15b7a8af4cf3337a101498c0ed690d23ade75 upstream. In the case that the new vector mask is a subset of the existing mask there is no point to do a AND operation of currentmask & newmask. The result is newmask. So we can simply copy the new mask to the current mask and be done with it. Preparatory patch for further consolidation. Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Borislav Petkov <[email protected]> Tested-by: Joe Lawrence <[email protected]> Cc: Jiang Liu <[email protected]> Cc: Jeremiah Mahler <[email protected]> Cc: [email protected] Cc: Guenter Roeck <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/x86/kernel/apic/vector.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -154,7 +154,7 @@ static int __assign_irq_vector(int irq, vector_cpumask); d->move_in_progress = cpumask_intersects(d->old_domain, cpu_online_mask); - cpumask_and(d->domain, d->domain, vector_cpumask); + cpumask_copy(d->domain, vector_cpumask); goto success; }
