From patchwork Wed Sep 12 15:58:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 10597905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2078214F9 for ; Wed, 12 Sep 2018 16:00:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F852296C4 for ; Wed, 12 Sep 2018 16:00:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0DD692A687; Wed, 12 Sep 2018 16:00:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 93F972A6CE for ; Wed, 12 Sep 2018 16:00:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728221AbeILVDn (ORCPT ); Wed, 12 Sep 2018 17:03:43 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:3341 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728216AbeILVDn (ORCPT ); Wed, 12 Sep 2018 17:03:43 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 429RK35gQhz9ttRp; Wed, 12 Sep 2018 17:58:31 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id 9yFLhju64-tc; Wed, 12 Sep 2018 17:58:31 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 429RK35991z9ttBm; Wed, 12 Sep 2018 17:58:31 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 07BEE8B874; Wed, 12 Sep 2018 17:58:31 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id iF3petY_lBR2; Wed, 12 Sep 2018 17:58:31 +0200 (CEST) Received: from pc16082vm.idsi0.si.c-s.fr (po15451.idsi0.si.c-s.fr [172.25.231.3]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 9FAA08B86F; Wed, 12 Sep 2018 17:58:30 +0200 (CEST) Received: by pc16082vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 2C52271913; Wed, 12 Sep 2018 15:58:30 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v2 08/24] powerpc/mm: don't use _PAGE_EXEC in book3s/32 To: Bartlomiej Zolnierkiewicz , Benjamin Herrenschmidt , Dominik Brodowski , Geoff Levand , Jens Axboe , Kumar Gala , Li Yang , Michael Ellerman , Nicholas Piggin , Paul Mackerras , Scott Wood , aneesh.kumar@linux.vnet.ibm.com Cc: linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org Date: Wed, 12 Sep 2018 15:58:30 +0000 (UTC) Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP book3s/32 doesn't define _PAGE_EXEC, so no need to use it. All other platforms define _PAGE_EXEC so no need to check it is not NUL when not book3s/32. Reviewed-by: Aneesh Kumar K.V Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/book3s/32/pgtable.h | 2 +- arch/powerpc/mm/pgtable.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 7a9f0ed599ff..3127cc529aa1 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -234,7 +234,7 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, int psize) { unsigned long set = pte_val(entry) & - (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); + (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW); unsigned long clr = ~pte_val(entry) & _PAGE_RO; pte_update(ptep, clr, set); diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index d71c7777669c..4f788f3762a9 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -73,7 +73,7 @@ static struct page *maybe_pte_to_page(pte_t pte) return page; } -#if defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC == 0 +#ifdef CONFIG_PPC_BOOK3S /* Server-style MMU handles coherency when hashing if HW exec permission * is supposed per page (currently 64-bit only). If not, then, we always @@ -106,7 +106,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, return pte; } -#else /* defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC == 0 */ +#else /* CONFIG_PPC_BOOK3S */ /* Embedded type MMU with HW exec support. This is a bit more complicated * as we don't have two bits to spare for _PAGE_EXEC and _PAGE_HWEXEC so @@ -179,7 +179,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, return __pte(pte_val(pte) | _PAGE_EXEC); } -#endif /* !(defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC == 0) */ +#endif /* CONFIG_PPC_BOOK3S */ /* * set_pte stores a linux PTE into the linux page table.