[Xen-changelog] [xen-unstable] x86 hvm: Expose TSC_DEADLINE CPU feature to guests via CPUID.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir@xxxxxxx>
# Date 1292411342 0
# Node ID 4c180ed8d04440864eea5ffd1707b6bfb2d6cb22
# Parent  255c074eca57e2b0964b666aecd744c06cfcdb87
x86 hvm: Expose TSC_DEADLINE CPU feature to guests via CPUID.

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
---
 tools/libxc/xc_cpufeature.h |    1 +
 tools/libxc/xc_cpuid_x86.c  |    1 +
 2 files changed, 2 insertions(+)

diff -r 255c074eca57 -r 4c180ed8d044 tools/libxc/xc_cpufeature.h
--- a/tools/libxc/xc_cpufeature.h       Wed Dec 15 11:01:59 2010 +0000
+++ b/tools/libxc/xc_cpufeature.h       Wed Dec 15 11:09:02 2010 +0000
@@ -100,6 +100,7 @@
 #define X86_FEATURE_SSE4_2     (4*32+20) /* Streaming SIMD Extensions 4.2 */
 #define X86_FEATURE_X2APIC      (4*32+21) /* x2APIC */
 #define X86_FEATURE_POPCNT     (4*32+23) /* POPCNT instruction */
+#define X86_FEATURE_TSC_DEADLINE (4*32+24) /* "tdt" TSC Deadline Timer */
 #define X86_FEATURE_AES                (4*32+25) /* AES acceleration 
instructions */
 #define X86_FEATURE_XSAVE      (4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
 #define X86_FEATURE_AVX                (4*32+28) /* Advanced Vector Extensions 
*/
diff -r 255c074eca57 -r 4c180ed8d044 tools/libxc/xc_cpuid_x86.c
--- a/tools/libxc/xc_cpuid_x86.c        Wed Dec 15 11:01:59 2010 +0000
+++ b/tools/libxc/xc_cpuid_x86.c        Wed Dec 15 11:09:02 2010 +0000
@@ -209,6 +209,7 @@ static void xc_cpuid_hvm_policy(
                       bitmaskof(X86_FEATURE_XSAVE)) : 0));
 
         regs[2] |= (bitmaskof(X86_FEATURE_HYPERVISOR) |
+                    bitmaskof(X86_FEATURE_TSC_DEADLINE) |
                     bitmaskof(X86_FEATURE_X2APIC));
 
         regs[3] &= (bitmaskof(X86_FEATURE_FPU) |

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