KVM: Convert vm lock to a mutex

This allows the kvm mmu to perform sleepy operations, such as memory
allocation.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 8c87d20f8e39..5b77d9b7b1ac 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -1711,19 +1711,19 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
         if (is_page_fault(intr_info)) {
                 cr2 = vmcs_readl(EXIT_QUALIFICATION);
 
-                spin_lock(&vcpu->kvm->lock);
+                mutex_lock(&vcpu->kvm->lock);
                 r = kvm_mmu_page_fault(vcpu, cr2, error_code);
                 if (r < 0) {
-                        spin_unlock(&vcpu->kvm->lock);
+                        mutex_unlock(&vcpu->kvm->lock);
                         return r;
                 }
                 if (!r) {
-                        spin_unlock(&vcpu->kvm->lock);
+                        mutex_unlock(&vcpu->kvm->lock);
                         return 1;
                 }
 
                 er = emulate_instruction(vcpu, kvm_run, cr2, error_code);
-                spin_unlock(&vcpu->kvm->lock);
+                mutex_unlock(&vcpu->kvm->lock);
 
                 switch (er) {
                 case EMULATE_DONE: