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[v13,75/85] KVM: Convert gfn_to_page() to use kvm_follow_pfn()

Message ID 20241010182427.1434605-76-seanjc@google.com
State Accepted
Headers show
Series KVM: Stop grabbing references to PFNMAP'd pages | expand

Commit Message

Sean Christopherson Oct. 10, 2024, 6:24 p.m. UTC 
Convert gfn_to_page() to the new kvm_follow_pfn() internal API, which will
eventually allow removing gfn_to_pfn() and kvm_pfn_to_refcounted_page().

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 virt/kvm/kvm_main.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 696d5e429b3e..1782242a4800 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3145,14 +3145,16 @@  EXPORT_SYMBOL_GPL(kvm_prefetch_pages);
  */
 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
 {
-	kvm_pfn_t pfn;
+	struct page *refcounted_page = NULL;
+	struct kvm_follow_pfn kfp = {
+		.slot = gfn_to_memslot(kvm, gfn),
+		.gfn = gfn,
+		.flags = FOLL_WRITE,
+		.refcounted_page = &refcounted_page,
+	};
 
-	pfn = gfn_to_pfn(kvm, gfn);
-
-	if (is_error_noslot_pfn(pfn))
-		return NULL;
-
-	return kvm_pfn_to_refcounted_page(pfn);
+	(void)kvm_follow_pfn(&kfp);
+	return refcounted_page;
 }
 EXPORT_SYMBOL_GPL(gfn_to_page);