Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965092AbbFJS7q (ORCPT ); Wed, 10 Jun 2015 14:59:46 -0400 Received: from mail-pd0-f195.google.com ([209.85.192.195]:36016 "EHLO mail-pd0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965014AbbFJS7Z (ORCPT ); Wed, 10 Jun 2015 14:59:25 -0400 From: Min-Hua Chen To: linux@arm.linux.org.uk Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Min-Hua Chen Subject: [PATCHv3 2/2] arm: use max_lowmem_limit in find_limit() Date: Thu, 11 Jun 2015 02:59:33 +0800 Message-Id: <1433962773-8402-3-git-send-email-orca.chen@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1433962773-8402-1-git-send-email-orca.chen@gmail.com> References: <1433962773-8402-1-git-send-email-orca.chen@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1344 Lines: 36 In commit: 1c2f87c22566cd057bc8cde10c37ae9da1a1bb76, the max_low is set by memblock_get_current_limit(). However memblock.current_limit can be changed by memblock_set_current_limit() any point before find_limits(). It's better to use arm_lowmem_limit to be max_lowmem in two ways: First, arm_lowmem_limit cannot be changed by a public API. Second, the high_memory is set by arm_lowmem_limit and is a natural limit of low memory area in bootmem_init(). Signed-off-by: Min-Hua Chen --- arch/arm/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index be92fa0..b4f9513 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -89,7 +89,7 @@ __tagtable(ATAG_INITRD2, parse_tag_initrd2); static void __init find_limits(unsigned long *min, unsigned long *max_low, unsigned long *max_high) { - *max_low = PFN_DOWN(memblock_get_current_limit()); + *max_low = PFN_DOWN(arm_lowmem_limit); *min = PFN_UP(memblock_start_of_DRAM()); *max_high = PFN_DOWN(memblock_end_of_DRAM()); } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/