From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751712Ab2KPIyG (ORCPT ); Fri, 16 Nov 2012 03:54:06 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:22857 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751559Ab2KPIxk (ORCPT ); Fri, 16 Nov 2012 03:53:40 -0500 From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: linux-kernel@vger.kernel.org, Yinghai Lu , "Eric W. Biederman" Subject: [PATCH 9/9] x86: remove 1024g limitation for kexec buffer on 64bit Date: Fri, 16 Nov 2012 00:53:09 -0800 Message-Id: <1353055989-31939-10-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.7.7 In-Reply-To: <1353055989-31939-1-git-send-email-yinghai@kernel.org> References: <1353055989-31939-1-git-send-email-yinghai@kernel.org> X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org could find buffer above that, remove that obsolete limitation. use MAXMEM instead. Tested on sytem more than 1024g ram. Signed-off-by: Yinghai Lu Cc: "Eric W. Biederman" --- arch/x86/include/asm/kexec.h | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h index 317ff17..11bfdc5 100644 --- a/arch/x86/include/asm/kexec.h +++ b/arch/x86/include/asm/kexec.h @@ -48,11 +48,11 @@ # define vmcore_elf_check_arch_cross(x) ((x)->e_machine == EM_X86_64) #else /* Maximum physical address we can use pages from */ -# define KEXEC_SOURCE_MEMORY_LIMIT (0xFFFFFFFFFFUL) +# define KEXEC_SOURCE_MEMORY_LIMIT (MAXMEM-1) /* Maximum address we can reach in physical address mode */ -# define KEXEC_DESTINATION_MEMORY_LIMIT (0xFFFFFFFFFFUL) +# define KEXEC_DESTINATION_MEMORY_LIMIT (MAXMEM-1) /* Maximum address we can use for the control pages */ -# define KEXEC_CONTROL_MEMORY_LIMIT (0xFFFFFFFFFFUL) +# define KEXEC_CONTROL_MEMORY_LIMIT (MAXMEM-1) /* Allocate one page for the pdp and the second for the code */ # define KEXEC_CONTROL_PAGE_SIZE (4096UL + 4096UL) -- 1.7.7