Create a new layer for the in-table PTE manipulation APIs. For now, The
existing API is prefixed with double underscore to become the
arch-private API and the public API is just a simple wrapper that calls
the private API.
The public API implementation will subsequently be used to transparently
manipulate the contiguous bit where appropriate. But since there are
already some contig-aware users (e.g. hugetlb, kernel mapper), we must
first ensure those users use the private API directly so that the future
contig-bit manipulations in the public API do not interfere with those
existing uses.
No behavioural changes intended.
Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx>
---
arch/arm64/include/asm/pgtable.h | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 1f4efa17cc39..450428b11c49 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -137,7 +137,7 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
* so that we don't erroneously return false for pages that have been
* remapped as PROT_NONE but are yet to be flushed from the TLB.
* Note that we can't make any assumptions based on the state of the access
- * flag, since ptep_clear_flush_young() elides a DSB when invalidating the
+ * flag, since __ptep_clear_flush_young() elides a DSB when invalidating the
* TLB.
*/
#define pte_accessible(mm, pte) \
@@ -904,8 +904,7 @@ static inline int __ptep_test_and_clear_young(struct vm_area_struct *vma,
return pte_young(pte);
}
-#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
+static inline int __ptep_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
int young = __ptep_test_and_clear_young(vma, address, ptep);
@@ -1153,6 +1152,13 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
return __ptep_test_and_clear_young(vma, addr, ptep);
}
+#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
+static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
+{
+ return __ptep_clear_flush_young(vma, addr, ptep);
+}
+
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_PGTABLE_H */
--
2.25.1
