From 085563fb043c29cc09e5ec5e21a7f6bb519d91e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@redhat.com>
Date: Thu, 27 Nov 2014 20:03:11 +0100
Subject: [PATCH] KVM: x86: deliver phys lowest-prio
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Physical mode can't address more than one APIC, but lowest-prio is
allowed, so we just reuse our paths.

SDM 10.6.2.1 Physical Destination:
  Also, for any non-broadcast IPI or I/O subsystem initiated interrupt
  with lowest priority delivery mode, software must ensure that APICs
  defined in the interrupt address are present and enabled to receive
  interrupts.

We could warn on top of that.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 arch/x86/kvm/lapic.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index f6184f1f13c3..541e17865e63 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -693,8 +693,6 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
 	ret = true;
 
 	if (irq->dest_mode == 0) { /* physical mode */
-		if (irq->delivery_mode == APIC_DM_LOWEST)
-			goto out;
 		dst = &map->phys_map[irq->dest_id & 0xff];
 	} else {
 		u32 mda = irq->dest_id << (32 - map->ldr_bits);
-- 
2.30.9