On Thu, Apr 28, 2022, Lai Jiangshan wrote: > On Wed, Apr 27, 2022 at 7:16 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote: > > > @@ -159,10 +249,23 @@ int kvm_gfn_to_pfn_cache_refresh(struct kvm *kvm, struct gfn_to_pfn_cache *gpc, > > > > The following code of refresh_in_progress is somewhat like mutex. > > + mutex_lock(&gpc->refresh_in_progress); // before write_lock_irq(&gpc->lock); > > Is it fit for the intention? Yeah, I mutex should work. Not sure why I shied away from a mutex...
