X86: Disable PCID/INVPCID for pv
This patch disable PCID/INVPCID for pv.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
diff -r 0b15aa9541dc tools/libxc/xc_cpufeature.h
--- a/tools/libxc/xc_cpufeature.h Thu Nov 17 18:41:59 2011 +0800
+++ b/tools/libxc/xc_cpufeature.h Thu Nov 17 23:09:45 2011 +0800
@@ -78,6 +78,7 @@
#define X86_FEATURE_CX16 13 /* CMPXCHG16B */
#define X86_FEATURE_XTPR 14 /* Send Task Priority Messages */
#define X86_FEATURE_PDCM 15 /* Perf/Debug Capability MSR */
+#define X86_FEATURE_PCID 17 /* Process Context ID */
#define X86_FEATURE_DCA 18 /* Direct Cache Access */
#define X86_FEATURE_SSE4_1 19 /* Streaming SIMD Extensions 4.1 */
#define X86_FEATURE_SSE4_2 20 /* Streaming SIMD Extensions 4.2 */
@@ -132,5 +133,6 @@
#define X86_FEATURE_SMEP 7 /* Supervisor Mode Execution Protection */
#define X86_FEATURE_BMI2 8 /* 2nd group bit manipulation extensions */
#define X86_FEATURE_ERMS 9 /* Enhanced REP MOVSB/STOSB */
+#define X86_FEATURE_INVPCID 10 /* Invalidate Process Context ID */
#endif /* __LIBXC_CPUFEATURE_H */
diff -r 0b15aa9541dc tools/libxc/xc_cpuid_x86.c
--- a/tools/libxc/xc_cpuid_x86.c Thu Nov 17 18:41:59 2011 +0800
+++ b/tools/libxc/xc_cpuid_x86.c Thu Nov 17 23:09:45 2011 +0800
@@ -481,6 +481,7 @@ static void xc_cpuid_pv_policy(
}
clear_bit(X86_FEATURE_XTPR, regs[2]);
clear_bit(X86_FEATURE_PDCM, regs[2]);
+ clear_bit(X86_FEATURE_PCID, regs[2]);
clear_bit(X86_FEATURE_DCA, regs[2]);
set_bit(X86_FEATURE_HYPERVISOR, regs[2]);
break;
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