diff mbox series

[v5,03/13] powerpc/pgtable: Drop PTE_ATOMIC_UPDATES

Message ID dbe8438fd1ed3e500132c8ab70269d4e6cc84531.1590079968.git.christophe.leroy@csgroup.eu
State Under Review
Headers show
Series Modernise powerpc 40x | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch fail Failed to apply to any branch
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linux-next (e8f3274774b45b5f4e9e3d5cad7ff9f43ae3add5)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (8659a0e0efdd975c73355dbc033f79ba3b31e82c)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (b85051e755b0e9d6dd8f17ef1da083851b83287d)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (30df74d67d48949da87e3a5b57c381763e8fd526)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (554840f2574c18f341dcfb4144b280b4842186fe)

Commit Message

Christophe Leroy May 21, 2020, 4:55 p.m. UTC
From: Christophe Leroy <christophe.leroy@c-s.fr>

40x was the last user of PTE_ATOMIC_UPDATES.

Drop everything related to PTE_ATOMIC_UPDATES.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v5: Rebased on top of the 8xx hugepage series
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/powerpc/include/asm/nohash/32/pgtable.h | 15 ---------------
 1 file changed, 15 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 717f995d21b8..46cd5428fc52 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -259,25 +259,10 @@  static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, p
 static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p,
 				     unsigned long clr, unsigned long set, int huge)
 {
-#if defined(PTE_ATOMIC_UPDATES) && !defined(CONFIG_PTE_64BIT)
-	unsigned long old, tmp;
-
-	__asm__ __volatile__("\
-1:	lwarx	%0,0,%3\n\
-	andc	%1,%0,%4\n\
-	or	%1,%1,%5\n"
-	PPC405_ERR77(0,%3)
-"	stwcx.	%1,0,%3\n\
-	bne-	1b"
-	: "=&r" (old), "=&r" (tmp), "=m" (*p)
-	: "r" (p), "r" (clr), "r" (set), "m" (*p)
-	: "cc" );
-#else /* PTE_ATOMIC_UPDATES */
 	pte_basic_t old = pte_val(*p);
 	pte_basic_t new = (old & ~(pte_basic_t)clr) | set;
 
 	*p = __pte(new);
-#endif /* !PTE_ATOMIC_UPDATES */
 
 #ifdef CONFIG_44x
 	if ((old & _PAGE_USER) && (old & _PAGE_EXEC))