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[18/46] KVM: Always report x2apic as supported feature

Message ID 1251028605-31977-19-git-send-email-avi@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Avi Kivity Aug. 23, 2009, 11:56 a.m. UTC 
From: Gleb Natapov <gleb@redhat.com>

We emulate x2apic in software, so host support is not required.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 arch/x86/kvm/x86.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
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Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e3d9040..dfb0e37 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1504,6 +1504,9 @@  static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 	case 1:
 		entry->edx &= kvm_supported_word0_x86_features;
 		entry->ecx &= kvm_supported_word4_x86_features;
+		/* we support x2apic emulation even if host does not support
+		 * it since we emulate x2apic in software */
+		entry->ecx |= F(X2APIC);
 		break;
 	/* function 2 entries are STATEFUL. That is, repeated cpuid commands
 	 * may return different values. This forces us to get_cpu() before