KVM: Change is_mmio_pfn to kvm_is_mmio_pfn, and make it common for all archs

Add a kvm_ prefix to avoid polluting kernel's name space.

Signed-off-by: Xiantao Zhang <[e-mail]>
Signed-off-by: Avi Kivity <[e-mail]>

include/linux/kvm_host.h

···
 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
 
+int kvm_is_mmio_pfn(pfn_t pfn);
+
 struct kvm_irq_ack_notifier {
 	struct hlist_node link;
 	unsigned gsi;

virt/kvm/kvm_main.c

···
 	return likely(n >= 0 && n < KVM_MAX_VCPUS);
 }
 
-static inline int is_mmio_pfn(pfn_t pfn)
+inline int kvm_is_mmio_pfn(pfn_t pfn)
 {
 	if (pfn_valid(pfn))
 		return PageReserved(pfn_to_page(pfn));
···
 
 		pfn = ((addr - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
 		up_read(&current->mm->mmap_sem);
-		BUG_ON(!is_mmio_pfn(pfn));
+		BUG_ON(!kvm_is_mmio_pfn(pfn));
 	} else
 		pfn = page_to_pfn(page[0]);
 
···
 	pfn_t pfn;
 
 	pfn = gfn_to_pfn(kvm, gfn);
-	if (!is_mmio_pfn(pfn))
+	if (!kvm_is_mmio_pfn(pfn))
 		return pfn_to_page(pfn);
 
-	WARN_ON(is_mmio_pfn(pfn));
+	WARN_ON(kvm_is_mmio_pfn(pfn));
 
 	get_page(bad_page);
 	return bad_page;
···
 
 void kvm_release_pfn_clean(pfn_t pfn)
 {
-	if (!is_mmio_pfn(pfn))
+	if (!kvm_is_mmio_pfn(pfn))
 		put_page(pfn_to_page(pfn));
 }
 EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
···
 
 void kvm_set_pfn_dirty(pfn_t pfn)
 {
-	if (!is_mmio_pfn(pfn)) {
+	if (!kvm_is_mmio_pfn(pfn)) {
 		struct page *page = pfn_to_page(pfn);
 		if (!PageReserved(page))
 			SetPageDirty(page);
···
 
 void kvm_set_pfn_accessed(pfn_t pfn)
 {
-	if (!is_mmio_pfn(pfn))
+	if (!kvm_is_mmio_pfn(pfn))
 		mark_page_accessed(pfn_to_page(pfn));
 }
 EXPORT_SYMBOL_GPL(kvm_set_pfn_accessed);
 
 void kvm_get_pfn(pfn_t pfn)
 {
-	if (!is_mmio_pfn(pfn))
+	if (!kvm_is_mmio_pfn(pfn))
 		get_page(pfn_to_page(pfn));
 }
 EXPORT_SYMBOL_GPL(kvm_get_pfn);