[Xen-devel] [Patch] X86: expose HLE/RTM features to pv and hvm

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

X86: expose HLE/RTM features to pv and hvm

Intel recently release 2 new features, HLE and TRM.
Refer to http://software.intel.com/file/41417.
This patch expose them to pv and hvm

Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>

diff -r 8174412310fa tools/libxc/xc_cpufeature.h
--- a/tools/libxc/xc_cpufeature.h       Mon Feb 27 02:23:43 2012 +0800
+++ b/tools/libxc/xc_cpufeature.h       Mon Feb 27 03:41:13 2012 +0800
@@ -129,10 +129,12 @@
 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx) */
 #define X86_FEATURE_FSGSBASE     0 /* {RD,WR}{FS,GS}BASE instructions */
 #define X86_FEATURE_BMI1         3 /* 1st group bit manipulation extensions */
+#define X86_FEATURE_HLE          4 /* Hardware Lock Elision */
 #define X86_FEATURE_AVX2         5 /* AVX2 instructions */
 #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 */
+#define X86_FEATURE_RTM         11 /* Restricted Transactional Memory */
 
 #endif /* __LIBXC_CPUFEATURE_H */
diff -r 8174412310fa tools/libxc/xc_cpuid_x86.c
--- a/tools/libxc/xc_cpuid_x86.c        Mon Feb 27 02:23:43 2012 +0800
+++ b/tools/libxc/xc_cpuid_x86.c        Mon Feb 27 03:41:13 2012 +0800
@@ -362,11 +362,13 @@
     case 0x00000007: /* Intel-defined CPU features */
         if ( input[1] == 0 ) {
             regs[1] &= (bitmaskof(X86_FEATURE_BMI1) |
+                        bitmaskof(X86_FEATURE_HLE)  |
                         bitmaskof(X86_FEATURE_AVX2) |
                         bitmaskof(X86_FEATURE_SMEP) |
                         bitmaskof(X86_FEATURE_BMI2) |
                         bitmaskof(X86_FEATURE_ERMS) |
                         bitmaskof(X86_FEATURE_INVPCID) |
+                        bitmaskof(X86_FEATURE_RTM)  |
                         bitmaskof(X86_FEATURE_FSGSBASE));
         } else
             regs[1] = 0;
@@ -495,9 +497,11 @@
     case 0x00000007:
         if ( input[1] == 0 )
             regs[1] &= (bitmaskof(X86_FEATURE_BMI1) |
+                        bitmaskof(X86_FEATURE_HLE)  |
                         bitmaskof(X86_FEATURE_AVX2) |
                         bitmaskof(X86_FEATURE_BMI2) |
                         bitmaskof(X86_FEATURE_ERMS) |
+                        bitmaskof(X86_FEATURE_RTM)  |
                         bitmaskof(X86_FEATURE_FSGSBASE));
         else
             regs[1] = 0;

Attachment: expose_hlertm_for_pvhvm.patch
Description: expose_hlertm_for_pvhvm.patch

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