[PATCH v3 11/11] KVM: X86: Use common code for PV IPIs in linux guest

[Jacob Pan <jacob.jun.pan@linux.intel.com>]

Paravirtual apic hooks to enable PV IPIs for KVM if the "send IPI"
hypercall is available. Reuse common code for ICR preparation which
covers NMI-source reporting if in effect.

Originally-by: Zeng Guang <guang.zeng@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
 arch/x86/kernel/kvm.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 263f8aed4e2c..a45d60aa0302 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -516,15 +516,7 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
 
 	local_irq_save(flags);
 
-	switch (vector) {
-	default:
-		icr = APIC_DM_FIXED | vector;
-		break;
-	case NMI_VECTOR:
-		icr = APIC_DM_NMI;
-		break;
-	}
-
+	icr = __prepare_ICR(0, vector, 0);
 	for_each_cpu(cpu, mask) {
 		apic_id = per_cpu(x86_cpu_to_apicid, cpu);
 		if (!ipi_bitmap) {
-- 
2.25.1