From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wCX3m2kjGzDqFx for ; Wed, 26 Apr 2017 17:37:40 +1000 (AEST) Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 3wCX3m22nNz8wVM for ; Wed, 26 Apr 2017 17:37:40 +1000 (AEST) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wCX3l5sdKz9s7f for ; Wed, 26 Apr 2017 17:37:39 +1000 (AEST) Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v3Q7Y1UH140194 for ; Wed, 26 Apr 2017 03:37:31 -0400 Received: from e23smtp01.au.ibm.com (e23smtp01.au.ibm.com [202.81.31.143]) by mx0a-001b2d01.pphosted.com with ESMTP id 2a2ebuv3f5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 26 Apr 2017 03:37:27 -0400 Received: from localhost by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 26 Apr 2017 17:36:44 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v3Q7aYPT10420280 for ; Wed, 26 Apr 2017 17:36:42 +1000 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v3Q7a57a022101 for ; Wed, 26 Apr 2017 17:36:05 +1000 Subject: [PATCH v3 2/2] powerpc/fadump: update documentation about 'fadump_append=' parameter From: Hari Bathini To: Michael Ellerman Cc: linuxppc-dev , Michal =?utf-8?b?U3VjaMOhbmVr?= , Mahesh J Salgaonkar Date: Wed, 26 Apr 2017 13:05:47 +0530 In-Reply-To: <149319210065.14869.5547128856388591456.stgit@hbathini.in.ibm.com> References: <149319210065.14869.5547128856388591456.stgit@hbathini.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Message-Id: <149319214354.14869.4588799382016531714.stgit@hbathini.in.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , With the introduction of 'fadump_append=' parameter to pass additional parameters to fadump (capture) kernel, update documentation about it. Signed-off-by: Hari Bathini --- Documentation/powerpc/firmware-assisted-dump.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/powerpc/firmware-assisted-dump.txt b/Documentation/powerpc/firmware-assisted-dump.txt index 3007bc9..8e12380 100644 --- a/Documentation/powerpc/firmware-assisted-dump.txt +++ b/Documentation/powerpc/firmware-assisted-dump.txt @@ -158,7 +158,11 @@ How to enable firmware-assisted dump (fadump): 1. Set config option CONFIG_FA_DUMP=y and build kernel. 2. Boot into linux kernel with 'fadump=on' kernel cmdline option. -3. Optionally, user can also set 'fadump_reserve_mem=' kernel cmdline +3. A user can pass additional kernel parameters as a comma separated list + through 'fadump_append=' parameter, to be enforced when fadump is active. + This can be used to pass parameters like nr_cpus=1, numa=off to reduce + memory consumption during dump capture. +4. Optionally, user can also set 'fadump_reserve_mem=' kernel cmdline to specify size of the memory to reserve for boot memory dump preservation.