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

From: Avi Kivity
Date: Sun Aug 23 2009 - 08:05:46 EST


From: Gleb Natapov <gleb@xxxxxxxxxx>

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

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

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
--
1.6.4.1

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