Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754695AbbG1OdB (ORCPT ); Tue, 28 Jul 2015 10:33:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47995 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751261AbbG1Oc7 (ORCPT ); Tue, 28 Jul 2015 10:32:59 -0400 From: Mark Salter To: Catalin Marinas , Will Deacon Cc: "Arnd Bergmann --cc=Ard Biesheuvel" , Mark Rutland , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, Mark Salter Subject: [PATCH 0/2] arm64: support initrd outside of mapped RAM Date: Tue, 28 Jul 2015 10:32:39 -0400 Message-Id: <1438093961-15536-1-git-send-email-msalter@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1133 Lines: 27 When booting an arm64 kernel w/initrd using UEFI/grub, use of mem= will likely cut off part or all of the initrd. This leaves it outside the kernel linear map which leads to failure when unpacking. The x86 code has a similar need to relocate an initrd outside of mapped memory in some cases. The current x86 code uses early_memremap() to copy the original initrd from unmapped to mapped RAM. This patchset creates a generic copy_from_early_mem() utility based on that x86 code and has arm64 use it to relocate the initrd if necessary. Mark Salter (2): mm: add utility for early copy from unmapped ram arm64: support initrd outside kernel linear map arch/arm64/kernel/setup.c | 55 +++++++++++++++++++++++++++++++++++++ include/asm-generic/early_ioremap.h | 6 ++++ mm/early_ioremap.c | 22 +++++++++++++++ 3 files changed, 83 insertions(+) -- 2.4.3 -- 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/