| Message ID | 20210226100853.75344-1-pbonzini@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: flush deferred static key before checking it | expand |
On Fri, 2021-02-26 at 05:08 -0500, Paolo Bonzini wrote: > 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> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk> Thanks. Amazon Development Centre (London) Ltd. Registered in England and Wales with registration number 04543232 with its registered office at 1 Principal Place, Worship Street, London EC2A 2FA, United Kingdom.
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1d2bc89431a2..bfc928495bd4 100644 --- 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)); }
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> --- arch/x86/kvm/x86.c | 1 + 1 file changed, 1 insertion(+)