From 3b6d30f49883d8c2f87e85946322eb28497f7e5a Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Tue, 19 Nov 2013 18:48:04 +0800
Subject: [PATCH 4/5] X86: expose MPX feature to HVM guest
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Reviewed-by: Liu Jinsong <jinsong.liu@intel.com>
---
tools/libxc/xc_cpufeature.h | 1 +
tools/libxc/xc_cpuid_x86.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h
index c464e3a..cd7befc 100644
--- a/tools/libxc/xc_cpufeature.h
+++ b/tools/libxc/xc_cpufeature.h
@@ -137,5 +137,6 @@
#define X86_FEATURE_ERMS 9 /* Enhanced REP MOVSB/STOSB */
#define X86_FEATURE_INVPCID 10 /* Invalidate Process Context ID */
#define X86_FEATURE_RTM 11 /* Restricted Transactional Memory */
+#define X86_FEATURE_MPX 14 /* Memory Protection Extensions */
#endif /* __LIBXC_CPUFEATURE_H */
diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
index bbbf9b8..bcb7a59 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -371,7 +371,9 @@ static void xc_cpuid_hvm_policy(
bitmaskof(X86_FEATURE_ERMS) |
bitmaskof(X86_FEATURE_INVPCID) |
bitmaskof(X86_FEATURE_RTM) |
- bitmaskof(X86_FEATURE_FSGSBASE));
+ bitmaskof(X86_FEATURE_FSGSBASE) |
+ bitmaskof(X86_FEATURE_MPX));
+
} else
regs[1] = 0;
regs[0] = regs[2] = regs[3] = 0;
--
1.7.1