From 284dc49307738d2a897fd375431f741213cd0f27 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 29 Apr 2022 01:04:14 +0000 Subject: KVM: Take a 'struct page', not a pfn in kvm_is_zone_device_page() Operate on a 'struct page' instead of a pfn when checking if a page is a ZONE_DEVICE page, and rename the helper accordingly. Generally speaking, KVM doesn't actually care about ZONE_DEVICE memory, i.e. shouldn't do anything special for ZONE_DEVICE memory. Rather, KVM wants to treat ZONE_DEVICE memory like regular memory, and the need to identify ZONE_DEVICE memory only arises as an exception to PG_reserved pages. In other words, KVM should only ever check for ZONE_DEVICE memory after KVM has already verified that there is a struct page associated with the pfn. No functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20220429010416.2788472-9-seanjc@google.com> Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4334789409c0..6fb433ac2ba1 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1571,7 +1571,7 @@ void kvm_arch_sync_events(struct kvm *kvm); int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); bool kvm_is_reserved_pfn(kvm_pfn_t pfn); -bool kvm_is_zone_device_pfn(kvm_pfn_t pfn); +bool kvm_is_zone_device_page(struct page *page); struct kvm_irq_ack_notifier { struct hlist_node link; -- cgit v1.2.3