From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932687AbaLJSBR (ORCPT ); Wed, 10 Dec 2014 13:01:17 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:18023 "EHLO mailhub1.si.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932383AbaLJSBP (ORCPT ); Wed, 10 Dec 2014 13:01:15 -0500 From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , scottwood@freescale.com CC: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/4] powerpc32: misuse of accessors to pte_t objects Message-Id: <20141210180033.71D4A1A5D62@localhost.localdomain> Date: Wed, 10 Dec 2014 19:00:33 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org pte_val() is not meant to be used as L value. __pte() has to be used to assign value to pte_t. Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/pgtable.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 316f9a5..5d4fdcc 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -115,24 +115,25 @@ static inline unsigned long pte_pfn(pte_t pte) { /* Generic modifiers for PTE bits */ static inline pte_t pte_wrprotect(pte_t pte) { - pte_val(pte) &= ~(_PAGE_RW | _PAGE_HWWRITE); return pte; } + pte = __pte(pte_val(pte) & ~(_PAGE_RW | _PAGE_HWWRITE)); return pte; } static inline pte_t pte_mkclean(pte_t pte) { - pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HWWRITE); return pte; } + pte = __pte(pte_val(pte) & ~(_PAGE_DIRTY | _PAGE_HWWRITE)); + return pte; } static inline pte_t pte_mkold(pte_t pte) { - pte_val(pte) &= ~_PAGE_ACCESSED; return pte; } + pte = __pte(pte_val(pte) & ~_PAGE_ACCESSED); return pte; } static inline pte_t pte_mkwrite(pte_t pte) { - pte_val(pte) |= _PAGE_RW; return pte; } + pte = __pte(pte_val(pte) | _PAGE_RW); return pte; } static inline pte_t pte_mkdirty(pte_t pte) { - pte_val(pte) |= _PAGE_DIRTY; return pte; } + pte = __pte(pte_val(pte) | _PAGE_DIRTY); return pte; } static inline pte_t pte_mkyoung(pte_t pte) { - pte_val(pte) |= _PAGE_ACCESSED; return pte; } + pte = __pte(pte_val(pte) | _PAGE_ACCESSED); return pte; } static inline pte_t pte_mkspecial(pte_t pte) { - pte_val(pte) |= _PAGE_SPECIAL; return pte; } + pte = __pte(pte_val(pte) | _PAGE_SPECIAL); return pte; } static inline pte_t pte_mkhuge(pte_t pte) { return pte; } static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { - pte_val(pte) = (pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot); + pte = __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); return pte; } -- 2.1.0