Add flag KVM_LARCH_LBT checking in function kvm_own_lbt(), so that
it can be called safely rather than duplicated enabling again.
Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx>
---
arch/loongarch/kvm/vcpu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index d1b8c50941ca..ce478151466c 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -1283,9 +1283,11 @@ int kvm_own_lbt(struct kvm_vcpu *vcpu)
return -EINVAL;
preempt_disable();
- set_csr_euen(CSR_EUEN_LBTEN);
- _restore_lbt(&vcpu->arch.lbt);
- vcpu->arch.aux_inuse |= KVM_LARCH_LBT;
+ if (!(vcpu->arch.aux_inuse & KVM_LARCH_LBT)) {
+ set_csr_euen(CSR_EUEN_LBTEN);
+ _restore_lbt(&vcpu->arch.lbt);
+ vcpu->arch.aux_inuse |= KVM_LARCH_LBT;
+ }
preempt_enable();
return 0;
--
2.39.3
