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kvmtool: expose the TSC Deadline Timer feature to the guest

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with the TSC deadline timer feature, we don't need to calibrate the apic
timers anymore, which saves more than 100 milliseconds of boot time.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Arjan van de Ven
2015-02-13 13:44:57 -05:00
committed by Dimitri John Ledkov
parent 5158181267
commit dcc48d65e8
1 changed files with 3 additions and 0 deletions
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x86/cpuid.c
+3
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@@ -31,6 +31,9 @@ static void filter_cpuid(struct kvm_cpuid2 *kvm_cpuid)
/* Set X86_FEATURE_HYPERVISOR */
if (entry->index == 0)
entry->ecx |= (1 << 31);
/* Set CPUID_EXT_TSC_DEADLINE_TIMER*/
if (entry->index == 0)
entry->ecx |= (1 << 24);
break;
case 6:
/* Clear X86_FEATURE_EPB */