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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 AD9C3C433ED for ; Wed, 7 Apr 2021 17:29:02 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4614661242 for ; Wed, 7 Apr 2021 17:29:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4614661242 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aNbw9rbD2n11v8GJCDssFwZ0dyiervoYHfwE9vKRFCg=; b=LkldPTkUozHeBuvi10S9OmobO G24cKfKcA2zkuF+sYGqeokqO2V7ls86IWXB7sCd68X3HgW0w+DfiXXrY+fQmTAklixhESVf9sk1au TNbTd26OkIRD5IE6VU7++YMMG0BiO80o/UqhTkSu9XOHUiqgbdbMASqnY83LjojCsfwW2syV2lmBD Q9g9vaW/1rTAtbbp7azgDhYd5FmC4btevc3x3WtZ3hxFxOBS0BsX7QOUrvecdmwyMqRKxQEt0SXYH TFt7FbpLCVtEpuzHNw06N96C/qc4hkpLXmawdmXedpYVIrpKp9skoFJa7QKDrOEq4WTKgYku/zgPd eqXHXFbEA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lUBx9-005enu-Ge; Wed, 07 Apr 2021 17:26:55 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lUBwz-005elu-8u for linux-arm-kernel@lists.infradead.org; Wed, 07 Apr 2021 17:26:47 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7DA706121E; Wed, 7 Apr 2021 17:26:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617816404; bh=xxAF7GHeBxkoT1bP5pdr71a5gAYBafBiXk5AmPplAhs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Iy1Snv0d8wa9Gx1CvzBU2QHXvg8HODrh4v4kHJw7ZBX7JL8xaqXRB590SqXs+CNjH pE+eXk32d7FQN0cilfmOLn/BiBgI4xxnT5vA1vamqzxfPPqaBSQ7ky+6eoHoLVHxfi fJuctfoSQCEPlOYxGLFtRDzcLVCfJfSk36KTpMzaBgRggsblH19R+FRS4TeUdv6YKL sqeiXzMD1RR9vaK6fpsm5SLMvGrG7tvvH3osMJZRxFPFIqOyEaophkqlUuWP7gJzer xvDCHS7iIleB3TtvhZRzHq4WXb98Bhy8xnYKYTRneTHaWYyzZaquXwDXqH61lzpao2 fVLczihgwKJNw== From: Mike Rapoport To: linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , Ard Biesheuvel , Catalin Marinas , David Hildenbrand , Marc Zyngier , Mark Rutland , Mike Rapoport , Mike Rapoport , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC/RFT PATCH 1/3] memblock: update initialization of reserved pages Date: Wed, 7 Apr 2021 20:26:05 +0300 Message-Id: <20210407172607.8812-2-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210407172607.8812-1-rppt@kernel.org> References: <20210407172607.8812-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210407_182645_526652_829290C6 X-CRM114-Status: GOOD ( 15.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport The struct pages representing a reserved memory region are initialized using reserve_bootmem_range() function. This function is called for each reserved region just before the memory is freed from memblock to the buddy page allocator. The struct pages for MEMBLOCK_NOMAP regions are kept with the default values set by the memory map initialization which makes it necessary to have a special treatment for such pages in pfn_valid() and pfn_valid_within(). Split out initialization of the reserved pages to a function with a meaningful name and treat the MEMBLOCK_NOMAP regions the same way as the reserved regions and mark struct pages for the NOMAP regions as PageReserved. Signed-off-by: Mike Rapoport --- mm/memblock.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index afaefa8fc6ab..6b7ea9d86310 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -2002,6 +2002,26 @@ static unsigned long __init __free_memory_core(phys_addr_t start, return end_pfn - start_pfn; } +static void __init memmap_init_reserved_pages(void) +{ + struct memblock_region *region; + phys_addr_t start, end; + u64 i; + + /* initialize struct pages for the reserved regions */ + for_each_reserved_mem_range(i, &start, &end) + reserve_bootmem_region(start, end); + + /* and also treat struct pages for the NOMAP regions as PageReserved */ + for_each_mem_region(region) { + if (memblock_is_nomap(region)) { + start = region->base; + end = start + region->size; + reserve_bootmem_region(start, end); + } + } +} + static unsigned long __init free_low_memory_core_early(void) { unsigned long count = 0; @@ -2010,8 +2030,7 @@ static unsigned long __init free_low_memory_core_early(void) memblock_clear_hotplug(0, -1); - for_each_reserved_mem_range(i, &start, &end) - reserve_bootmem_region(start, end); + memmap_init_reserved_pages(); /* * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id -- 2.28.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel