[PATCH v13 28/85] KVM: Move kvm_{set,release}_page_{clean,dirty}() helpers up in kvm_main.c

Sean Christopherson
2024-10-10T18:56:31Z

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.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.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 e29f78ed6f48..6cdbd0516d58 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2746,6 +2746,47 @@ 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 kvm_pfn_t kvm_resolve_pfn(struct kvm_follow_pfn *kfp, struct page *page,
struct follow_pfnmap_args *map, bool writable)
{
@@ -3105,37 +3146,6 @@ 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;
@@ -3151,16 +3161,6 @@ 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;