KVM: xen: flush deferred static key before checking it

A missing flush would cause the static branch to trigger incorrectly.

Cc: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1d2bc89431a222f48246e0a2b388aaf428d14cfb..bfc928495bd44e9682471c50a34d5db72f0ae2c0 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8039,6 +8039,7 @@ void kvm_arch_exit(void)
        kvm_mmu_module_exit();
        free_percpu(user_return_msrs);
        kmem_cache_destroy(x86_fpu_cache);
+       static_key_deferred_flush(&kvm_xen_enabled);
        WARN_ON(static_branch_unlikely(&kvm_xen_enabled.key));
 }