[Xen-devel] [PATCH 4/4 V2] X86: expose MPX feature to HVM guest

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

From ee24e0bd02fd718b9403125bca7122c1db814b4f Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@xxxxxxxxx>
Date: Mon, 25 Nov 2013 05:33:54 +0800
Subject: [PATCH 4/4 V2] X86: expose MPX feature to HVM guest

Signed-off-by: Xudong Hao <xudong.hao@xxxxxxxxx>
Reviewed-by: Liu Jinsong <jinsong.liu@xxxxxxxxx>
---
 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

Attachment: 0004-X86-expose-MPX-feature-to-HVM-guest.patch
Description: 0004-X86-expose-MPX-feature-to-HVM-guest.patch

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