From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933205Ab3LIJqP (ORCPT ); Mon, 9 Dec 2013 04:46:15 -0500 Received: from mx1.redhat.com ([209.132.183.28]:5351 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933110Ab3LIJqF (ORCPT ); Mon, 9 Dec 2013 04:46:05 -0500 From: Dave Young To: linux-kernel@vger.kernel.org Cc: linux-efi@vger.kernel.org, x86@kernel.org, mjg59@srcf.ucam.org, hpa@zytor.com, James.Bottomley@HansenPartnership.com, vgoyal@redhat.com, ebiederm@xmission.com, horms@verge.net.au, kexec@lists.infradead.org, bp@alien8.de, greg@kroah.com, matt@console-pimps.org, toshi.kani@hp.com Subject: [PATCH v5 13/14] x86: reserve setup_data ranges late after parsing memmap cmdline Date: Mon, 9 Dec 2013 17:42:26 +0800 Message-Id: <1386582147-9802-14-git-send-email-dyoung@redhat.com> In-Reply-To: <1386582147-9802-1-git-send-email-dyoung@redhat.com> References: <1386582147-9802-1-git-send-email-dyoung@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently e820_reserve_setup_data is called before parsing early params, it works in normal case. But for memmap=exactmap, the final memory ranges are created after parsing memmap= cmdline params, so the previous e820_reserve_setup_data has no effect. For example, setup_data ranges will still be marked as normal system ram, thus when later sysfs driver ioremap them kernel will warn about mapping normal ram. This patch fix it by moving the e820_reserve_setup_data callback after parsing early params so they can be set as reserved ranges and later ioremap will be fine with it. changes: Boris: improve patch description Signed-off-by: Dave Young --- arch/x86/kernel/setup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index b2b54cd..a3357a6 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -927,8 +927,6 @@ void __init setup_arch(char **cmdline_p) iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1; setup_memory_map(); parse_setup_data(); - /* update the e820_saved too */ - e820_reserve_setup_data(); copy_edd(); @@ -990,6 +988,8 @@ void __init setup_arch(char **cmdline_p) early_dump_pci_devices(); #endif + /* update the e820_saved too */ + e820_reserve_setup_data(); finish_e820_parsing(); if (efi_enabled(EFI_BOOT)) -- 1.8.3.1