From 4e1df545e2fae53e07c93b835c3dcc9d4917c849 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 21 May 2020 16:55:54 +0000 Subject: powerpc/pgtable: Drop PTE_ATOMIC_UPDATES 40x was the last user of PTE_ATOMIC_UPDATES. Drop everything related to PTE_ATOMIC_UPDATES. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/dbe8438fd1ed3e500132c8ab70269d4e6cc84531.1590079968.git.christophe.leroy@csgroup.eu --- arch/powerpc/include/asm/nohash/32/pgtable.h | 15 --------------- 1 file changed, 15 deletions(-) (limited to 'arch/powerpc/include') 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)) -- cgit v1.2.3