shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 11:26:02 +09:00
Code Issues Packages Projects Releases Wiki Activity

ANDROID: KVM: arm64: Move hyp refcount manipulation helpers

Browse Source 
We will soon need to manipulate struct hyp_page refcounts from outside
page_alloc.c, so move the helpers to a header file.

Signed-off-by: Quentin Perret <qperret@google.com>
Bug: 209580772
Change-Id: I5cfeeb1e3e6a61cbba70c242cf25e035b26149e7
Signed-off-by: Will Deacon <willdeacon@google.com>
This commit is contained in:
Quentin Perret
2021-10-26 13:44:55 +01:00
committed by Will Deacon
parent 7fbb472eb0
commit 3cb7feab5f
2 changed files with 18 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/arm64/kvm/hyp/include/nvhe/memory.h
View File

@@ -46,4 +46,22 @@ static inline int hyp_page_count(void *addr)
return p->refcount;
}
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)
{
BUG_ON(!p->refcount);
p->refcount--;
return (p->refcount == 0);
}
static inline void hyp_set_page_refcounted(struct hyp_page *p)
{
BUG_ON(p->refcount);
p->refcount = 1;
}
#endif /* __KVM_HYP_MEMORY_H */

19
arch/arm64/kvm/hyp/nvhe/page_alloc.c
View File

@@ -144,25 +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)
{
BUG_ON(!p->refcount);
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))