From: Avi Kivity <[EMAIL PROTECTED]>
As we can be in guest mode for indefinite periods, we need to drop slots_lock
so that it can be taken for write by other operations (like the reading
the dirty log).
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 94d77e8..cb57b6a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2785,6 +2785,8 @@ again:
kvm_lapic_sync_to_vapic(vcpu);
+ up_read(&vcpu->kvm->slots_lock);
+
vcpu->guest_mode = 1;
kvm_guest_enter();
@@ -2811,6 +2813,8 @@ again:
preempt_enable();
+ down_read(&vcpu->kvm->slots_lock);
+
/*
* Profile KVM exit RIPs:
*/
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