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| author | Keir Fraser <keir@xen.org> | 2010-12-07 18:24:12 +0000 |
|---|---|---|
| committer | Keir Fraser <keir@xen.org> | 2010-12-07 18:24:12 +0000 |
| commit | 21c4d089ba2a236dcf33a06222070bd6c60c6e3d (patch) | |
| tree | 272264b493a3c1f3b355896607a78a623037eadd /tools/libxc/xc_cpuid_x86.c | |
| parent | 91ddbc059f3f563cd38e82095f19facf6e2257af (diff) | |
| download | xen-21c4d089ba2a236dcf33a06222070bd6c60c6e3d.tar.gz xen-21c4d089ba2a236dcf33a06222070bd6c60c6e3d.tar.bz2 xen-21c4d089ba2a236dcf33a06222070bd6c60c6e3d.zip | |
x86 hvm: x2APIC emulation
This patch would enable Xen to handle x2APIC MSR accessing of HVM
guest, which is faster(avoid decoding of MMIO accessing). The credit
comes to Gleb Natapov who complete the work for KVM.
Have tested with 4 vcpus guest, with/without x2apic support.
From: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'tools/libxc/xc_cpuid_x86.c')
| -rw-r--r-- | tools/libxc/xc_cpuid_x86.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c index 7d963a903e..5df426ce6c 100644 --- a/tools/libxc/xc_cpuid_x86.c +++ b/tools/libxc/xc_cpuid_x86.c @@ -208,7 +208,8 @@ static void xc_cpuid_hvm_policy( (bitmaskof(X86_FEATURE_AVX) | bitmaskof(X86_FEATURE_XSAVE)) : 0); - regs[2] |= bitmaskof(X86_FEATURE_HYPERVISOR); + regs[2] |= (bitmaskof(X86_FEATURE_HYPERVISOR) | + bitmaskof(X86_FEATURE_X2APIC)); regs[3] &= (bitmaskof(X86_FEATURE_FPU) | bitmaskof(X86_FEATURE_VME) | |