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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 15B00C433ED for ; Tue, 20 Apr 2021 05:36:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1AAC613AE for ; Tue, 20 Apr 2021 05:36:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229867AbhDTFfI (ORCPT ); Tue, 20 Apr 2021 01:35:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46434 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229504AbhDTFfG (ORCPT ); Tue, 20 Apr 2021 01:35:06 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B31D1C06174A for ; Mon, 19 Apr 2021 22:34:35 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id m12so5112707pgr.9 for ; Mon, 19 Apr 2021 22:34:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=187MCoIPXpaJH9wXIfv1D4RfPEKy9wfY5kI0RoKayqY=; b=kKH73qBqCs17YlrGPWGz+DvfO4xUHi/6tF1OZQVuEg9Nkv18uH9xahcRfT/GfYNdEp fEuT9kZdMSfKdqTla+VYmuF5QB5XSOwZO7ZQ3O2JddZK8qDTqDJ+EdDje6p9w7T4Nlpw vW44SYFyi6gLDMHvnjn3igzYF/IdjA6YdFQoIBYFuS//iI6FLKAP86lJ9tzTSr1dRFjR BUByyiWp1KndQITXTNphxZ48ZZIZgH+Fh0FS1n5LITxN3KdCxdJkgHEWWPugWskWwOID g9oZriZHHX8RDVoMg5wFa5QQC2lgvAzwl2HfwhJlfW35UIcvDkPYjO1M3CUYcU3ggOOY m2ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=187MCoIPXpaJH9wXIfv1D4RfPEKy9wfY5kI0RoKayqY=; b=Qqnr0Qjwb3Ino1X0CO8w1MGh4akqw4TeoE8UWAMdi5vJSSTE8b5Jo1nGt9Oy9XehtJ Q2wMLhy5Gaw/HCxua4yjl8l6ECkcUmgzLdbr2PWsP23QrQ/Iwj/S+NYfBxSPeVxQn3uJ gMayfFNogzkpbgORxmseWQylXI5lSlhINiJDkfIFZ0TIJyJ1dITnFhbYBClAlumoUdA1 +vT17Y0hN9ddq2DCZIKhrx6dt62ofp5vp0PJ+rT55BDYEK3vUsRhLiIF5eKmuO08MbLY LSHUY1OFI/vWRU73jbYNAVy9jJ8f8KxBzENmEZmfiOTzLZB26vwqdgz9pxnjpoJxHlms KCGQ== X-Gm-Message-State: AOAM533rULUyyObUuDoHsGWmZCradnW6N8gYD1PJ/VHz3EfdAhSscF1g bxMMTUpRt1ERQ4K1kHL/uoSQRlvS06t5Sg== X-Google-Smtp-Source: ABdhPJw6+iHDkrfLgS9WIhXS11uyH/9iUXZ7DCEnmyeRf/nfUYDIeR1fEIzJ8vYHN0uPGLDIrHBYEg== X-Received: by 2002:a65:43c9:: with SMTP id n9mr15139505pgp.19.1618896875061; Mon, 19 Apr 2021 22:34:35 -0700 (PDT) Received: from localhost ([222.112.70.84]) by smtp.gmail.com with ESMTPSA id f65sm1130035pjk.2.2021.04.19.22.34.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 22:34:34 -0700 (PDT) From: Cao jin To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, Cao jin Subject: [PATCH] x86/mm: Fix copy&paste error in comments Date: Tue, 20 Apr 2021 13:34:32 +0800 Message-Id: <20210420053432.4842-1-jojing64@gmail.com> X-Mailer: git-send-email 2.30.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Direct page mapping in bottom-up way will allocate memory from low address for page structures in a range, which is the *bottom*, not the *end*. Signed-off-by: Cao jin --- arch/x86/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index e26f5c5c6565..bc2f871c75f1 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -663,7 +663,7 @@ static void __init memory_map_bottom_up(unsigned long map_start, /* * We start from the bottom (@map_start) and go to the top (@map_end). * The memblock_find_in_range() gets us a block of RAM from the - * end of RAM in [min_pfn_mapped, max_pfn_mapped) used as new pages + * bottom of RAM in [min_pfn_mapped, max_pfn_mapped) used as new pages * for page table. */ while (start < map_end) { -- 2.30.1