x86/uv: Use default_cpu_mask_to_apicid_and()

Same functionality except the extra bits ored on the apicid.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235446.482841015@linutronix.de

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index b487b3a..fd5bb20 100644 (file)
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -530,23 +530,12 @@ uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
                          const struct cpumask *andmask,
                          unsigned int *apicid)
 {
-       int unsigned cpu;
+       int ret = default_cpu_mask_to_apicid_and(cpumask, andmask, apicid);
 
-       /*
-        * We're using fixed IRQ delivery, can only return one phys APIC ID.
-        * May as well be the first.
-        */
-       for_each_cpu_and(cpu, cpumask, andmask) {
-               if (cpumask_test_cpu(cpu, cpu_online_mask))
-                       break;
-       }
-
-       if (likely(cpu < nr_cpu_ids)) {
-               *apicid = per_cpu(x86_cpu_to_apicid, cpu) | uv_apicid_hibits;
-               return 0;
-       }
+       if (!ret)
+               *apicid |= uv_apicid_hibits;
 
-       return -EINVAL;
+       return ret;
 }
 
 static unsigned int x2apic_get_apic_id(unsigned long x)