From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756904Ab3JHUhx (ORCPT ); Tue, 8 Oct 2013 16:37:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48955 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751896Ab3JHUhs (ORCPT ); Tue, 8 Oct 2013 16:37:48 -0400 From: Mark Salter To: linux-kernel@vger.kernel.org Cc: Catalin Marinas , Will Deacon , Mark Salter Subject: [PATCH] arm64: add PAGE_ALIGNED_DATA to linker script Date: Tue, 8 Oct 2013 16:37:39 -0400 Message-Id: <1381264659-11132-1-git-send-email-msalter@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The arm64 linker script doesn't use the PAGE_ALIGNED_DATA macro which leads to a ".data..page_aligned" section being placed between the end of .data and start of .bss: % readelf -e vmlinux ... Section to Segment mapping: Segment Sections... 00 .head.text .text .text.init .rodata __ksymtab __ksymtab_gpl \ __ksymtab_strings __param __modver __ex_table .notes \ .init.text .init.data .data..percpu .data .data..page_aligned .bss This causes problems for the EFI stub which may have to relocate the kernel image based on stext and _edata symbols. This patch adds PAGE_ALIGNED_DATA() to the linker script inside the the .data section. Signed-off-by: Mark Salter --- arch/arm64/kernel/vmlinux.lds.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index f8ab9d8..e441556 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -110,6 +110,7 @@ SECTIONS */ INIT_TASK_DATA(THREAD_SIZE) NOSAVE_DATA + PAGE_ALIGNED_DATA(PAGE_SIZE) CACHELINE_ALIGNED_DATA(64) READ_MOSTLY_DATA(64) -- 1.8.3.1