From patchwork Wed Jun 3 09:42:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibo Mao X-Patchwork-Id: 11585433 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8B31D92A for ; Wed, 3 Jun 2020 09:42:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71D94207D3 for ; Wed, 3 Jun 2020 09:42:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726360AbgFCJmW (ORCPT ); Wed, 3 Jun 2020 05:42:22 -0400 Received: from mail.loongson.cn ([114.242.206.163]:43412 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725854AbgFCJmW (ORCPT ); Wed, 3 Jun 2020 05:42:22 -0400 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxL955cNdeqAQ9AA--.3197S2; Wed, 03 Jun 2020 17:42:17 +0800 (CST) From: Bibo Mao To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] MIPS: Do not flush tlb when setting pmd entry Date: Wed, 3 Jun 2020 17:42:13 +0800 Message-Id: <1591177333-17833-1-git-send-email-maobibo@loongson.cn> X-Mailer: git-send-email 1.8.3.1 X-CM-TRANSID: AQAAf9DxL955cNdeqAQ9AA--.3197S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKr17uryxCF15Zw1xuF47twb_yoWxtFc_J3 W2y398GryYqrsrt3yrWFZ5JFyDuayDuF18CrsFvryYy3s5Aa1kXayjqryjyr45XrWIvrWr Gr98Zr909F17tjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb7xYjsxI4VWDJwAYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I 6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM2 8CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0 cI8IcVCY1x0267AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4 A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IE w4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMc vjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY02Avz4vE-syl42xK82IYc2Ij 64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x 8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1Y6r17MIIYrxkI7VAKI48JMIIF0xvE 2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42 xK8VAvwI8IcIk0rVWrZr1j6s0DMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIE c7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07jY6wZUUUUU= X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Function set_pmd_at is to set pmd entry, if tlb entry need to be flushed, there exists pmdp_huge_clear_flush alike function before set_pmd_at is called. So it is not necessary to call flush_tlb_all in this function. Signed-off-by: Bibo Mao --- arch/mips/mm/pgtable-64.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/mips/mm/pgtable-64.c b/arch/mips/mm/pgtable-64.c index 6fd6e96..a236752 100644 --- a/arch/mips/mm/pgtable-64.c +++ b/arch/mips/mm/pgtable-64.c @@ -101,7 +101,6 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd) { *pmdp = pmd; - flush_tlb_all(); } void __init pagetable_init(void)