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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 EFE3CC5CFFE for ; Tue, 11 Dec 2018 15:57:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B63B621104 for ; Tue, 11 Dec 2018 15:57:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544543864; bh=4iJcN/uCsHknOh9eN4aCEkFKWFNeq46a5OvHuz+s07I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2rOaISUUkAYQ0ZXHOEyu5gNwWLXcVhE4XgI8ZsvPvR+BQq2W+xJO7Fh34eCyB02s6 ixRU+OTC3etmoFc1N6GxWx6OENhcYHBP3ObfPJA5lIV8HorC6ZXGNZBi/EQ+pUCwz0 OmIKdCaQr4oONuKJQ5xzjy8Zi3PbmJMr7FFDGYaA= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B63B621104 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730885AbeLKP5n (ORCPT ); Tue, 11 Dec 2018 10:57:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:46688 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730850AbeLKP5j (ORCPT ); Tue, 11 Dec 2018 10:57:39 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 07C80205C9; Tue, 11 Dec 2018 15:57:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544543858; bh=4iJcN/uCsHknOh9eN4aCEkFKWFNeq46a5OvHuz+s07I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xB/KiVDrwqK4lT+Q8xgWssGhlrABwE3MFTZHJN5J8nDmvxBGpgHka9hRoFzW+VvPj RlS/cpOlS3y0GlEYt0hWirhMO0/ePKlMik7nfhuVsL2hxYz9NNIQmJ46YWzgnDbPlo hYlbxZ8Vw6ZGqRiGPvsO9D/3us9EwpwObZJTs/W0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Masayoshi Mizuma , Pavel Tatashin , Ingo Molnar , Naoya Horiguchi , Michal Hocko , Thomas Gleixner , Oscar Salvador , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH 4.19 092/118] Revert "x86/e820: put !E820_TYPE_RAM regions into memblock.reserved" Date: Tue, 11 Dec 2018 16:41:51 +0100 Message-Id: <20181211151647.981267206@linuxfoundation.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20181211151644.216668863@linuxfoundation.org> References: <20181211151644.216668863@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 9fd61bc95130d4971568b89c9548b5e0a4e18e0e ] commit 124049decbb1 ("x86/e820: put !E820_TYPE_RAM regions into memblock.reserved") breaks movable_node kernel option because it changed the memory gap range to reserved memblock. So, the node is marked as Normal zone even if the SRAT has Hot pluggable affinity. ===================================================================== kernel: BIOS-e820: [mem 0x0000180000000000-0x0000180fffffffff] usable kernel: BIOS-e820: [mem 0x00001c0000000000-0x00001c0fffffffff] usable ... kernel: reserved[0x12]#011[0x0000181000000000-0x00001bffffffffff], 0x000003f000000000 bytes flags: 0x0 ... kernel: ACPI: SRAT: Node 2 PXM 6 [mem 0x180000000000-0x1bffffffffff] hotplug kernel: ACPI: SRAT: Node 3 PXM 7 [mem 0x1c0000000000-0x1fffffffffff] hotplug ... kernel: Movable zone start for each node kernel: Node 3: 0x00001c0000000000 kernel: Early memory node ranges ... ===================================================================== The original issue is fixed by the former patches, so let's revert commit 124049decbb1 ("x86/e820: put !E820_TYPE_RAM regions into memblock.reserved"). Link: http://lkml.kernel.org/r/20181002143821.5112-4-msys.mizuma@gmail.com Signed-off-by: Masayoshi Mizuma Reviewed-by: Pavel Tatashin Acked-by: Ingo Molnar Cc: Naoya Horiguchi Cc: Michal Hocko Cc: Thomas Gleixner Cc: Oscar Salvador Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- arch/x86/kernel/e820.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index c88c23c658c1..d1f25c831447 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -1248,7 +1248,6 @@ void __init e820__memblock_setup(void) { int i; u64 end; - u64 addr = 0; /* * The bootstrap memblock region count maximum is 128 entries @@ -1265,21 +1264,13 @@ void __init e820__memblock_setup(void) struct e820_entry *entry = &e820_table->entries[i]; end = entry->addr + entry->size; - if (addr < entry->addr) - memblock_reserve(addr, entry->addr - addr); - addr = end; if (end != (resource_size_t)end) continue; - /* - * all !E820_TYPE_RAM ranges (including gap ranges) are put - * into memblock.reserved to make sure that struct pages in - * such regions are not left uninitialized after bootup. - */ if (entry->type != E820_TYPE_RAM && entry->type != E820_TYPE_RESERVED_KERN) - memblock_reserve(entry->addr, entry->size); - else - memblock_add(entry->addr, entry->size); + continue; + + memblock_add(entry->addr, entry->size); } /* Throw away partial pages: */ -- 2.19.1