linux-kernel - [PATCH v12 26/84] KVM: Move kvm_{set,release}_page_{clean,dirty}() helpers up in kvm

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Message-ID: <20240726235234.228822-27-seanjc@google.com>
Date: Fri, 26 Jul 2024 16:51:35 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>, 
	Oliver Upton <oliver.upton@...ux.dev>, Tianrui Zhao <zhaotianrui@...ngson.cn>, 
	Bibo Mao <maobibo@...ngson.cn>, Huacai Chen <chenhuacai@...nel.org>, 
	Michael Ellerman <mpe@...erman.id.au>, Anup Patel <anup@...infault.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Christian Borntraeger <borntraeger@...ux.ibm.com>, 
	Janosch Frank <frankja@...ux.ibm.com>, Claudio Imbrenda <imbrenda@...ux.ibm.com>, 
	Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	kvmarm@...ts.linux.dev, loongarch@...ts.linux.dev, linux-mips@...r.kernel.org, 
	linuxppc-dev@...ts.ozlabs.org, kvm-riscv@...ts.infradead.org, 
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	David Matlack <dmatlack@...gle.com>, David Stevens <stevensd@...omium.org>
Subject: [PATCH v12 26/84] KVM: Move kvm_{set,release}_page_{clean,dirty}()
 helpers up in kvm_main.c

Hoist the kvm_{set,release}_page_{clean,dirty}() APIs further up in
kvm_main.c so that they can be used by the kvm_follow_pfn family of APIs.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 virt/kvm/kvm_main.c | 82 ++++++++++++++++++++++-----------------------
 1 file changed, 41 insertions(+), 41 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 31570c5627e3..48b626f1b5f3 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2748,6 +2748,47 @@ unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *w
 	return gfn_to_hva_memslot_prot(slot, gfn, writable);
 }
 
+static bool kvm_is_ad_tracked_page(struct page *page)
+{
+	/*
+	 * Per page-flags.h, pages tagged PG_reserved "should in general not be
+	 * touched (e.g. set dirty) except by its owner".
+	 */
+	return !PageReserved(page);
+}
+
+static void kvm_set_page_dirty(struct page *page)
+{
+	if (kvm_is_ad_tracked_page(page))
+		SetPageDirty(page);
+}
+
+static void kvm_set_page_accessed(struct page *page)
+{
+	if (kvm_is_ad_tracked_page(page))
+		mark_page_accessed(page);
+}
+
+void kvm_release_page_clean(struct page *page)
+{
+	if (!page)
+		return;
+
+	kvm_set_page_accessed(page);
+	put_page(page);
+}
+EXPORT_SYMBOL_GPL(kvm_release_page_clean);
+
+void kvm_release_page_dirty(struct page *page)
+{
+	if (!page)
+		return;
+
+	kvm_set_page_dirty(page);
+	kvm_release_page_clean(page);
+}
+EXPORT_SYMBOL_GPL(kvm_release_page_dirty);
+
 static inline int check_user_page_hwpoison(unsigned long addr)
 {
 	int rc, flags = FOLL_HWPOISON | FOLL_WRITE;
@@ -3125,37 +3166,6 @@ void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty)
 }
 EXPORT_SYMBOL_GPL(kvm_vcpu_unmap);
 
-static bool kvm_is_ad_tracked_page(struct page *page)
-{
-	/*
-	 * Per page-flags.h, pages tagged PG_reserved "should in general not be
-	 * touched (e.g. set dirty) except by its owner".
-	 */
-	return !PageReserved(page);
-}
-
-static void kvm_set_page_dirty(struct page *page)
-{
-	if (kvm_is_ad_tracked_page(page))
-		SetPageDirty(page);
-}
-
-static void kvm_set_page_accessed(struct page *page)
-{
-	if (kvm_is_ad_tracked_page(page))
-		mark_page_accessed(page);
-}
-
-void kvm_release_page_clean(struct page *page)
-{
-	if (!page)
-		return;
-
-	kvm_set_page_accessed(page);
-	put_page(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_page_clean);
-
 void kvm_release_pfn_clean(kvm_pfn_t pfn)
 {
 	struct page *page;
@@ -3171,16 +3181,6 @@ void kvm_release_pfn_clean(kvm_pfn_t pfn)
 }
 EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
 
-void kvm_release_page_dirty(struct page *page)
-{
-	if (!page)
-		return;
-
-	kvm_set_page_dirty(page);
-	kvm_release_page_clean(page);
-}
-EXPORT_SYMBOL_GPL(kvm_release_page_dirty);
-
 void kvm_release_pfn_dirty(kvm_pfn_t pfn)
 {
 	struct page *page;
-- 
2.46.0.rc1.232.g9752f9e123-goog