40 lines
1.6 KiB
Diff
40 lines
1.6 KiB
Diff
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# HG changeset patch
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# User Liu, Jinsong <jinsong.liu@intel.com>
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# Date 1323170884 0
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# Node ID d313582d4fa2157332f1d50e599aebca36c41b3b
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# Parent a0befa32e927cc147aaee9bce42c51f53580a875
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X86: Disable PCID/INVPCID for pv
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This patch disable PCID/INVPCID for pv.
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Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
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Committed-by: Keir Fraser <keir@xen.org>
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--- a/tools/libxc/xc_cpufeature.h
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+++ b/tools/libxc/xc_cpufeature.h
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@@ -78,6 +78,7 @@
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#define X86_FEATURE_CX16 13 /* CMPXCHG16B */
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#define X86_FEATURE_XTPR 14 /* Send Task Priority Messages */
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#define X86_FEATURE_PDCM 15 /* Perf/Debug Capability MSR */
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+#define X86_FEATURE_PCID 17 /* Process Context ID */
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#define X86_FEATURE_DCA 18 /* Direct Cache Access */
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#define X86_FEATURE_SSE4_1 19 /* Streaming SIMD Extensions 4.1 */
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#define X86_FEATURE_SSE4_2 20 /* Streaming SIMD Extensions 4.2 */
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@@ -132,5 +133,6 @@
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#define X86_FEATURE_SMEP 7 /* Supervisor Mode Execution Protection */
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#define X86_FEATURE_BMI2 8 /* 2nd group bit manipulation extensions */
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#define X86_FEATURE_ERMS 9 /* Enhanced REP MOVSB/STOSB */
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+#define X86_FEATURE_INVPCID 10 /* Invalidate Process Context ID */
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#endif /* __LIBXC_CPUFEATURE_H */
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--- a/tools/libxc/xc_cpuid_x86.c
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+++ b/tools/libxc/xc_cpuid_x86.c
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@@ -427,6 +427,7 @@ static void xc_cpuid_pv_policy(
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}
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clear_bit(X86_FEATURE_XTPR, regs[2]);
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clear_bit(X86_FEATURE_PDCM, regs[2]);
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+ clear_bit(X86_FEATURE_PCID, regs[2]);
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clear_bit(X86_FEATURE_DCA, regs[2]);
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set_bit(X86_FEATURE_HYPERVISOR, regs[2]);
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break;
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