KVM/VMX: Avoid return error when flush tlb successfully in the hv_remote_flush_tlb_wi...

The "ret" is initialized to be ENOTSUPP. The return value of
__hv_remote_flush_tlb_with_range() will be Or with "ret" when ept
table potiners are mismatched. This will cause return ENOTSUPP even if
flush tlb successfully. This patch is to fix the issue and set
"ret" to 0.

Fixes: a5c214dad198 ("KVM/VMX: Change hv flush logic when ept tables are mismatched.")
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index e344dc8626d09d24d794677c60ebbf0c9db3db91..f6915f10e584a5f568e2e6a38123ac70c4d3881c 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -453,7 +453,7 @@ static int hv_remote_flush_tlb_with_range(struct kvm *kvm,
                struct kvm_tlb_range *range)
 {
        struct kvm_vcpu *vcpu;
-       int ret = -ENOTSUPP, i;
+       int ret = 0, i;
 
        spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);