[Xen-devel] [PATCH v5 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 6fce03b..66cc82e 100644
--- a/tools/libxc/xc_cpufeature.h
+++ b/tools/libxc/xc_cpufeature.h
@@ -140,6 +140,7 @@
 #define X86_FEATURE_RTM         11 /* Restricted Transactional Memory */
 #define X86_FEATURE_RDSEED      18 /* RDSEED instruction */
 #define X86_FEATURE_ADX         19 /* ADCX, ADOX instructions */
+#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 71917e3..79490da 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -375,6 +375,7 @@ static void xc_cpuid_hvm_policy(
                         bitmaskof(X86_FEATURE_RTM)  |
                         bitmaskof(X86_FEATURE_RDSEED)  |
                         bitmaskof(X86_FEATURE_ADX)  |
+                        bitmaskof(X86_FEATURE_SMAP) |
                         bitmaskof(X86_FEATURE_FSGSBASE));
         } else
             regs[1] = 0;
-- 
1.8.3.1


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