[12/16] KVM: arm64: Move hyp refcount helpers to header files

Commit Message

Quentin Perret Oct. 13, 2021, 3:58 p.m. UTC

We will soon need to touch the hyp_page refcount from outside
page_alloc.c in nVHE protected mode, so move the relevant helpers into a
header file.

Signed-off-by: Quentin Perret <[e-mail]>
---
 arch/arm64/kvm/hyp/include/nvhe/memory.h | 18 ++++++++++++++++++
 arch/arm64/kvm/hyp/nvhe/page_alloc.c     | 18 ------------------
 2 files changed, 18 insertions(+), 18 deletions(-)

Patch

diff --git a/arch/arm64/kvm/hyp/include/nvhe/memory.h b/arch/arm64/kvm/hyp/include/nvhe/memory.h
index 592b7edb3edb..e77783be0f3f 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/memory.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/memory.h
@@ -12,6 +12,24 @@  struct hyp_page {
 	unsigned short order;
 };
 
+static inline void hyp_page_ref_inc(struct hyp_page *p)
+{
+	BUG_ON(p->refcount == USHRT_MAX);
+	p->refcount++;
+}
+
+static inline int hyp_page_ref_dec_and_test(struct hyp_page *p)
+{
+	p->refcount--;
+	return (p->refcount == 0);
+}
+
+static inline void hyp_set_page_refcounted(struct hyp_page *p)
+{
+	BUG_ON(p->refcount);
+	p->refcount = 1;
+}
+
 extern u64 __hyp_vmemmap;
 #define hyp_vmemmap ((struct hyp_page *)__hyp_vmemmap)
 
diff --git a/arch/arm64/kvm/hyp/nvhe/page_alloc.c b/arch/arm64/kvm/hyp/nvhe/page_alloc.c
index 38accc2e23e3..0d977169ed08 100644
--- a/arch/arm64/kvm/hyp/nvhe/page_alloc.c
+++ b/arch/arm64/kvm/hyp/nvhe/page_alloc.c
@@ -144,24 +144,6 @@  static struct hyp_page *__hyp_extract_page(struct hyp_pool *pool,
 	return p;
 }
 
-static inline void hyp_page_ref_inc(struct hyp_page *p)
-{
-	BUG_ON(p->refcount == USHRT_MAX);
-	p->refcount++;
-}
-
-static inline int hyp_page_ref_dec_and_test(struct hyp_page *p)
-{
-	p->refcount--;
-	return (p->refcount == 0);
-}
-
-static inline void hyp_set_page_refcounted(struct hyp_page *p)
-{
-	BUG_ON(p->refcount);
-	p->refcount = 1;
-}
-
 static void __hyp_put_page(struct hyp_pool *pool, struct hyp_page *p)
 {
 	if (hyp_page_ref_dec_and_test(p))