x86: add helper macro for X86_FEATURE_CX16 feature detection

Add macro cpu_has_cx16 to detect X86_FEATURE_CX16 feature.

Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/xen/include/asm-x86/cpufeature.h b/xen/include/asm-x86/cpufeature.h
index 7963a3a306d24e7200dcdd1f66e89d18f021588d..63c1fe834cf50e965970d4001ccc45260bb3c03e 100644 (file)
--- a/xen/include/asm-x86/cpufeature.h
+++ b/xen/include/asm-x86/cpufeature.h
@@ -216,6 +216,8 @@
 
 #define cpu_has_cpuid_faulting boot_cpu_has(X86_FEATURE_CPUID_FAULTING)
 
+#define cpu_has_cx16            boot_cpu_has(X86_FEATURE_CX16)
+
 enum _cache_type {
     CACHE_TYPE_NULL = 0,
     CACHE_TYPE_DATA = 1,