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[v2,18/37] powerpc/nohash: Refactor pte_clear()

Message ID 818f7df83d7e9e18f55e274cd3c44f2871ade4dd.1695659959.git.christophe.leroy@csgroup.eu (mailing list archive)
State Accepted
Commit 2ef9f4bb9c47ed30ff3c7961744cae545c034154
Headers show
Series Implement execute-only protection on powerpc | expand

Commit Message

Christophe Leroy Sept. 25, 2023, 6:31 p.m. UTC
pte_clear() are doing the same on nohash/32 and nohash/64,

Keep the static inline version of nohash/64, make it common and
remove the macro version of nohash/32.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/powerpc/include/asm/nohash/32/pgtable.h | 3 ---
 arch/powerpc/include/asm/nohash/64/pgtable.h | 7 -------
 arch/powerpc/include/asm/nohash/pgtable.h    | 6 ++++++
 3 files changed, 6 insertions(+), 10 deletions(-)
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Patch

diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 0be464af4cb1..481594097f46 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -153,9 +153,6 @@ 
 
 #ifndef __ASSEMBLY__
 
-#define pte_clear(mm, addr, ptep) \
-	do { pte_update(mm, addr, ptep, ~0, 0, 0); } while (0)
-
 #define pmd_none(pmd)		(!pmd_val(pmd))
 #define	pmd_bad(pmd)		(pmd_val(pmd) & _PMD_BAD)
 #define	pmd_present(pmd)	(pmd_val(pmd) & _PMD_PRESENT_MASK)
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index dc6e35c3a53f..b59fbf754f82 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -159,13 +159,6 @@  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 	__young;							\
 })
 
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
-			     pte_t * ptep)
-{
-	pte_update(mm, addr, ptep, ~0UL, 0, 0);
-}
-
-
 /* Set the dirty and/or accessed bits atomically in a linux PTE */
 static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
 					   pte_t *ptep, pte_t entry,
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h
index 7e810a84ac15..464eb771db82 100644
--- a/arch/powerpc/include/asm/nohash/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/pgtable.h
@@ -96,6 +96,12 @@  static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 }
 #define __HAVE_ARCH_PTEP_GET_AND_CLEAR
 
+static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
+			     pte_t * ptep)
+{
+	pte_update(mm, addr, ptep, ~0UL, 0, 0);
+}
+
 /* Generic accessors to PTE bits */
 #ifndef pte_mkwrite_novma
 static inline pte_t pte_mkwrite_novma(pte_t pte)