[v12,83/84] KVM: Drop APIs that manipulate "struct page" via pfns

Commit Message

Sean Christopherson July 26, 2024, 11:52 p.m. UTC

Remove all kvm_{release,set}_pfn_*() APIs not that all users are gone.

No functional change intended.

Signed-off-by: Sean Christopherson <[e-mail]>
---
 include/linux/kvm_host.h |  5 ----
 virt/kvm/kvm_main.c      | 55 ----------------------------------------
 2 files changed, 60 deletions(-)

Comments

Alex Bennée Aug. 2, 2024, 11:03 a.m. UTC | #1

Sean Christopherson <[e-mail]> writes:

> Remove all kvm_{release,set}_pfn_*() APIs not that all users are gone.

now?

Otherwise:

Reviewed-by: Alex Bennée <[e-mail]>

Patch

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 34a1cadb1b80..87d61f16a449 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1260,11 +1260,6 @@  static inline kvm_pfn_t kvm_faultin_pfn(struct kvm_vcpu *vcpu, gfn_t gfn,
 				 write ? FOLL_WRITE : 0, writable, refcounted_page);
 }
 
-void kvm_release_pfn_clean(kvm_pfn_t pfn);
-void kvm_release_pfn_dirty(kvm_pfn_t pfn);
-void kvm_set_pfn_dirty(kvm_pfn_t pfn);
-void kvm_set_pfn_accessed(kvm_pfn_t pfn);
-
 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
 			int len);
 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 030a08d4b21d..8b85e1130a63 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3200,61 +3200,6 @@  void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map)
 }
 EXPORT_SYMBOL_GPL(kvm_vcpu_unmap);
 
-void kvm_release_pfn_clean(kvm_pfn_t pfn)
-{
-	struct page *page;
-
-	if (is_error_noslot_pfn(pfn))
-		return;
-
-	page = kvm_pfn_to_refcounted_page(pfn);
-	if (!page)
-		return;
-
-	kvm_release_page_clean(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
-
-void kvm_release_pfn_dirty(kvm_pfn_t pfn)
-{
-	struct page *page;
-
-	if (is_error_noslot_pfn(pfn))
-		return;
-
-	page = kvm_pfn_to_refcounted_page(pfn);
-	if (!page)
-		return;
-
-	kvm_release_page_dirty(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty);
-
-/*
- * Note, checking for an error/noslot pfn is the caller's responsibility when
- * directly marking a page dirty/accessed.  Unlike the "release" helpers, the
- * "set" helpers are not to be used when the pfn might point at garbage.
- */
-void kvm_set_pfn_dirty(kvm_pfn_t pfn)
-{
-	if (WARN_ON(is_error_noslot_pfn(pfn)))
-		return;
-
-	if (pfn_valid(pfn))
-		kvm_set_page_dirty(pfn_to_page(pfn));
-}
-EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty);
-
-void kvm_set_pfn_accessed(kvm_pfn_t pfn)
-{
-	if (WARN_ON(is_error_noslot_pfn(pfn)))
-		return;
-
-	if (pfn_valid(pfn))
-		kvm_set_page_accessed(pfn_to_page(pfn));
-}
-EXPORT_SYMBOL_GPL(kvm_set_pfn_accessed);
-
 static int next_segment(unsigned long len, int offset)
 {
 	if (len > PAGE_SIZE - offset)