From fa57438734fa3201abf3bf47729a7294b45ecef9 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 13 Feb 2018 12:31:59 -0500
Subject: [PATCH] target-i386: wake up processors that receive an SMI

An SMI should definitely wake up a processor in halted state!
This lets OVMF boot with SMM on multiprocessor systems, although
it halts very soon after that with a "CpuIndex != BspIndex"
assertion failure.

Backports commit a9bad65d2c1f61af74ce2ff43238d4b20bf81c3a from qemu
---
 qemu/target-i386/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/qemu/target-i386/cpu.c b/qemu/target-i386/cpu.c
index 13219aac..a9d887f7 100644
--- a/qemu/target-i386/cpu.c
+++ b/qemu/target-i386/cpu.c
@@ -2481,7 +2481,9 @@ static bool x86_cpu_has_work(CPUState *cs)
            (cs->interrupt_request & (CPU_INTERRUPT_NMI |
                                      CPU_INTERRUPT_INIT |
                                      CPU_INTERRUPT_SIPI |
-                                     CPU_INTERRUPT_MCE));
+                                     CPU_INTERRUPT_MCE)) ||
+           ((cs->interrupt_request & CPU_INTERRUPT_SMI) &&
+            !(env->hflags & HF_SMM_MASK));
 }
 
 static void x86_cpu_common_class_init(struct uc_struct *uc, ObjectClass *oc, void *data)