[Xen-devel] [PATCH v4 10/10] x86/tools: Expose SMAP to HVM guests

[Feng Wu <feng.wu@xxxxxxxxx>]

This patch exposes SMAP festure to HVM guests

Signed-off-by: Feng Wu <feng.wu@xxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 tools/libxc/xc_cpufeature.h | 1 +
 tools/libxc/xc_cpuid_x86.c  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h
index c464e3a..37c69f7 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_SMAP        20 /* Supervisor Mode Access Protection */
 
 #endif /* __LIBXC_CPUFEATURE_H */
diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
index bbbf9b8..953945f 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -367,6 +367,7 @@ static void xc_cpuid_hvm_policy(
                         bitmaskof(X86_FEATURE_HLE)  |
                         bitmaskof(X86_FEATURE_AVX2) |
                         bitmaskof(X86_FEATURE_SMEP) |
+                        bitmaskof(X86_FEATURE_SMAP) |
                         bitmaskof(X86_FEATURE_BMI2) |
                         bitmaskof(X86_FEATURE_ERMS) |
                         bitmaskof(X86_FEATURE_INVPCID) |
-- 
1.8.3.1


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