On Thu, May 06, 2021, Marcelo Tosatti wrote:
> Index: kvm/arch/x86/kvm/x86.c
> ===================================================================
> --- kvm.orig/arch/x86/kvm/x86.c
> +++ kvm/arch/x86/kvm/x86.c
> @@ -11295,7 +11295,11 @@ bool kvm_arch_can_dequeue_async_page_pre
>
> void kvm_arch_start_assignment(struct kvm *kvm)
> {
> - atomic_inc(&kvm->arch.assigned_device_count);
> + int ret;
> +
> + ret = atomic_inc_return(&kvm->arch.assigned_device_count);
> + if (kvm_x86_ops.start_assignment)
> + kvm_x86_ops.start_assignment(kvm, ret);
This can be a static_call(), just needs an entry in kvm-x86-ops.h.
> }
> EXPORT_SYMBOL_GPL(kvm_arch_start_assignment);
>
>
>
