From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93D54C433E1 for ; Fri, 5 Jun 2020 09:11:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4FC572075B for ; Fri, 5 Jun 2020 09:11:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4FC572075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BCC2880009; Fri, 5 Jun 2020 05:11:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B7BC68E0006; Fri, 5 Jun 2020 05:11:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9CE3F8000A; Fri, 5 Jun 2020 05:11:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0253.hostedemail.com [216.40.44.253]) by kanga.kvack.org (Postfix) with ESMTP id 88F5E80009 for ; Fri, 5 Jun 2020 05:11:20 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 4D0E4180AD802 for ; Fri, 5 Jun 2020 09:11:20 +0000 (UTC) X-FDA: 76894589520.01.name53_0d0da6a26d9e Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 312C418037BE3 for ; Fri, 5 Jun 2020 09:11:20 +0000 (UTC) X-HE-Tag: name53_0d0da6a26d9e X-Filterd-Recvd-Size: 3762 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by imf08.hostedemail.com (Postfix) with ESMTP for ; Fri, 5 Jun 2020 09:11:18 +0000 (UTC) Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxXesqDNpeHOw9AA--.611S3; Fri, 05 Jun 2020 17:11:07 +0800 (CST) From: Bibo Mao To: Thomas Bogendoerfer , Andrew Morton , Paul Burton , Jiaxun Yang Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 2/2] MIPS: Add writable-applies-readable policy with pgrot Date: Fri, 5 Jun 2020 17:11:06 +0800 Message-Id: <1591348266-28392-2-git-send-email-maobibo@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591348266-28392-1-git-send-email-maobibo@loongson.cn> References: <1591348266-28392-1-git-send-email-maobibo@loongson.cn> X-CM-TRANSID:AQAAf9DxXesqDNpeHOw9AA--.611S3 X-Coremail-Antispam: 1UD129KBjvJXoW7tr1fJryDXF1xAF4rGr45Wrg_yoW8Gw45pF 9rA343JrWqgFy0yryUuFWrGayUGr4Dta47Jw17WF1xAws8Xw18KF93KF92qryruFsava10 y3WxWr48JayxAFUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9Eb7Iv0xC_KF4lb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUGwA2048vs2IY020Ec7CjxVAFwI0_JFI_Gr1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv 6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc2xSY4AK6svPMxAIw28IcxkI7VAKI4 8JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xv wVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjx v20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20E Y4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267 AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU8Q_-PUUUUU== X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Rspamd-Queue-Id: 312C418037BE3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000138, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Linux system, writable applies readable privilege in most architectures, this patch adds this policy on MIPS platform where hardware rixi is supported. Signed-off-by: Bibo Mao --- arch/mips/mm/cache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index f814e43..dae0617 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -160,7 +160,7 @@ static inline void setup_protection_map(void) if (cpu_has_rixi) { protection_map[0] = __pgprot(__PC | __PP | __NX | __NR); protection_map[1] = __pgprot(__PC | __PP | __NX | ___R); - protection_map[2] = __pgprot(__PC | __PP | __NX | __NR); + protection_map[2] = __pgprot(__PC | __PP | __NX | ___R); protection_map[3] = __pgprot(__PC | __PP | __NX | ___R); protection_map[4] = __pgprot(__PC | __PP | ___R); protection_map[5] = __pgprot(__PC | __PP | ___R); @@ -169,7 +169,7 @@ static inline void setup_protection_map(void) protection_map[8] = __pgprot(__PC | __PP | __NX | __NR); protection_map[9] = __pgprot(__PC | __PP | __NX | ___R); - protection_map[10] = __pgprot(__PC | __PP | __NX | ___W | __NR); + protection_map[10] = __pgprot(__PC | __PP | __NX | ___W | ___R); protection_map[11] = __pgprot(__PC | __PP | __NX | ___W | ___R); protection_map[12] = __pgprot(__PC | __PP | ___R); protection_map[13] = __pgprot(__PC | __PP | ___R); -- 1.8.3.1