From: Liu, Jinsong Date: Tue, 6 Dec 2011 11:28:04 +0000 (+0000) Subject: X86: Disable PCID/INVPCID for pv X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https://%22%22/%22http:/www.example.com/cgi/%22https:/%22%22?a=commitdiff_plain;h=7de3c6981cd882df78ced5b1542889c78e3a5b53;p=xen.git X86: Disable PCID/INVPCID for pv This patch disable PCID/INVPCID for pv. Signed-off-by: Liu, Jinsong Committed-by: Keir Fraser --- diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h index 01a378a741..ff7c3d0042 100644 --- a/tools/libxc/xc_cpufeature.h +++ b/tools/libxc/xc_cpufeature.h @@ -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 --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c index ccd73501ea..7b6b439e3b 100644 --- a/tools/libxc/xc_cpuid_x86.c +++ b/tools/libxc/xc_cpuid_x86.c @@ -485,6 +485,7 @@ 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;