From 2608d7a12fd4badfe2eac534150f0715a7fd3ff3 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@redhat.com>
Date: Thu, 21 Jan 2010 15:31:45 +0200
Subject: KVM: Allow kvm_load_guest_fpu() even when !vcpu->fpu_active
This allows accessing the guest fpu from the instruction emulator, as well as
being symmetric with kvm_put_guest_fpu().
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
arch/x86/kvm/x86.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
(limited to 'arch')
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ce267d9f030..4cf4eac03bb 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4239,7 +4239,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
preempt_disable();
kvm_x86_ops->prepare_guest_switch(vcpu);
- kvm_load_guest_fpu(vcpu);
+ if (vcpu->fpu_active)
+ kvm_load_guest_fpu(vcpu);
local_irq_disable();
@@ -5285,7 +5286,7 @@ EXPORT_SYMBOL_GPL(fx_init);
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
{
- if (!vcpu->fpu_active || vcpu->guest_fpu_loaded)
+ if (vcpu->guest_fpu_loaded)
return;
vcpu->guest_fpu_loaded = 1;
--
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