* [PATCH v5 10/10] x86/tools: Expose SMAP to HVM guests
@ 2014-05-06 10:11 Feng Wu
0 siblings, 0 replies; only message in thread
From: Feng Wu @ 2014-05-06 10:11 UTC (permalink / raw)
To: xen-devel
Cc: kevin.tian, Feng Wu, JBeulich, andrew.cooper3, eddie.dong,
jun.nakajima, ian.campbell
This patch exposes SMAP festure to HVM guests
Signed-off-by: Feng Wu <feng.wu@intel.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---
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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