From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750749AbdAWGqe (ORCPT ); Mon, 23 Jan 2017 01:46:34 -0500 Received: from mx1.redhat.com ([209.132.183.28]:41816 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750703AbdAWGqd (ORCPT ); Mon, 23 Jan 2017 01:46:33 -0500 From: Xunlei Pang To: linux-kernel@vger.kernel.org, kexec@lists.infradead.org Cc: x86@kernel.org, Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Thomas Gleixner , Andrew Morton , Dave Young , Xunlei Pang , Robert LeBlanc , Baoquan He Subject: [PATCH v2] x86/crash: Update the stale comment in reserve_crashkernel() Date: Mon, 23 Jan 2017 14:48:23 +0800 Message-Id: <1485154103-18426-1-git-send-email-xlpang@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 23 Jan 2017 06:46:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CRASH_KERNEL_ADDR_MAX has been missing for a long time, update it with more detailed explanation. Cc: Robert LeBlanc Cc: Baoquan He Signed-off-by: Xunlei Pang --- arch/x86/kernel/setup.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 4cfba94..c32a167 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -575,7 +575,9 @@ static void __init reserve_crashkernel(void) /* 0 means: find the address automatically */ if (crash_base <= 0) { /* - * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX + * Set CRASH_ADDR_LOW_MAX upper bound for crash memory + * as old kexec-tools loads bzImage below that, unless + * "crashkernel=size[KMG],high" is specified. */ crash_base = memblock_find_in_range(CRASH_ALIGN, high ? CRASH_ADDR_HIGH_MAX -- 1.8.3.1