Messages in this thread | | | Date | Thu, 28 Apr 2022 14:33:10 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH v2 6/8] KVM: Fix multiple races in gfn=>pfn cache refresh |
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On Thu, Apr 28, 2022, Lai Jiangshan wrote: > On Wed, Apr 27, 2022 at 7:16 PM Sean Christopherson <seanjc@google.com> 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...
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