From a01496e6d9e0b4cac681c26e08bb9b882da52266 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20Benn=C3=A9e?= <alex.bennee@linaro.org>
Date: Fri, 2 Mar 2018 12:43:25 -0500
Subject: [PATCH] target/i386/cpu.h: declare TCG_GUEST_DEFAULT_MO

This suppresses the incorrect warning when forcing MTTCG for x86
guests on x86 hosts. A future patch will still warn when
TARGET_SUPPORT_MTTCG hasn't been defined for the guest (which is still
pending for x86).

Backports commit 72c1701f62e8d44eb24a0583a958edc280105455 from qemu
---
 qemu/target/i386/cpu.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qemu/target/i386/cpu.h b/qemu/target/i386/cpu.h
index 3c0a33d1..fa024907 100644
--- a/qemu/target/i386/cpu.h
+++ b/qemu/target/i386/cpu.h
@@ -30,6 +30,9 @@
 #define TARGET_LONG_BITS 32
 #endif
 
+/* The x86 has a strong memory model with some store-after-load re-ordering */
+#define TCG_GUEST_DEFAULT_MO      (TCG_MO_ALL & ~TCG_MO_ST_LD)
+
 /* Maximum instruction code size */
 #define TARGET_MAX_INSN_SIZE 16