From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965336Ab2JXTCr (ORCPT ); Wed, 24 Oct 2012 15:02:47 -0400 Received: from terminus.zytor.com ([198.137.202.10]:60504 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756505Ab2JXTCo (ORCPT ); Wed, 24 Oct 2012 15:02:44 -0400 Date: Wed, 24 Oct 2012 12:02:27 -0700 From: tip-bot for Yinghai Lu Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, yinghai@kernel.org, stable@vger.kernel.org, jacob.shin@amd.com, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, yinghai@kernel.org, jacob.shin@amd.com, tglx@linutronix.de, stable@vger.kernel.org, hpa@linux.intel.com In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/urgent] x86, mm: Use memblock memory loop instead of e820_RAM Git-Commit-ID: 1f2ff682ac951ed82cc043cf140d2851084512df X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6 (terminus.zytor.com [127.0.0.1]); Wed, 24 Oct 2012 12:02:33 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 1f2ff682ac951ed82cc043cf140d2851084512df Gitweb: http://git.kernel.org/tip/1f2ff682ac951ed82cc043cf140d2851084512df Author: Yinghai Lu AuthorDate: Mon, 22 Oct 2012 16:35:18 -0700 Committer: H. Peter Anvin CommitDate: Wed, 24 Oct 2012 11:52:36 -0700 x86, mm: Use memblock memory loop instead of e820_RAM We need to handle E820_RAM and E820_RESERVED_KERNEL at the same time. Also memblock has page aligned range for ram, so we could avoid mapping partial pages. Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/CAE9FiQVZirvaBMFYRfXMmWEcHbKSicQEHz4VAwUv0xFCk51ZNw@mail.gmail.com Acked-by: Jacob Shin Signed-off-by: H. Peter Anvin Cc: --- arch/x86/kernel/setup.c | 15 ++++++++------- 1 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 468e98d..5d888af 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -921,18 +921,19 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_64 if (max_pfn > max_low_pfn) { int i; - for (i = 0; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; + unsigned long start, end; + unsigned long start_pfn, end_pfn; - if (ei->addr + ei->size <= 1UL << 32) - continue; + for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, + NULL) { - if (ei->type == E820_RESERVED) + end = PFN_PHYS(end_pfn); + if (end <= (1UL<<32)) continue; + start = PFN_PHYS(start_pfn); max_pfn_mapped = init_memory_mapping( - ei->addr < 1UL << 32 ? 1UL << 32 : ei->addr, - ei->addr + ei->size); + max((1UL<<32), start), end); } /* can we preseve max_low_pfn ?*/