From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VYdT4-0005aL-ON for kexec@lists.infradead.org; Tue, 22 Oct 2013 15:02:00 +0000 Received: from m2.gw.fujitsu.co.jp (unknown [10.0.50.72]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 0C0DB3EE1E2 for ; Wed, 23 Oct 2013 00:01:40 +0900 (JST) Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id E955145DE58 for ; Wed, 23 Oct 2013 00:01:39 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id D0D5545DE52 for ; Wed, 23 Oct 2013 00:01:39 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id BC3C21DB803C for ; Wed, 23 Oct 2013 00:01:39 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.240.81.134]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id C7BF21DB8038 for ; Wed, 23 Oct 2013 00:01:38 +0900 (JST) Subject: [PATCH v4 3/3] Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter From: HATAYAMA Daisuke Date: Wed, 23 Oct 2013 00:01:35 +0900 Message-ID: <20131022150135.24240.40322.stgit@localhost6.localdomain6> In-Reply-To: <20131022150015.24240.39686.stgit@localhost6.localdomain6> References: <20131022150015.24240.39686.stgit@localhost6.localdomain6> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=twosheds.infradead.org@lists.infradead.org To: hpa@linux.intel.com, ebiederm@xmission.com, vgoyal@redhat.com Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org, bp@alien8.de, akpm@linux-foundation.org, fengguang.wu@intel.com, jingbai.ma@hp.com Add disable_cpu_apicid kernel parameter to disable the CPU with the specified number of initial APIC ID, mostly used for the kdump 2nd kernel to disable BSP to wake up multiple CPUs without causing system reset or hang due to sending INIT from AP to BSP. Signed-off-by: HATAYAMA Daisuke --- Documentation/kernel-parameters.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index fcbb736..0ca0902 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -774,6 +774,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted. disable= [IPV6] See Documentation/networking/ipv6.txt. + disable_cpu_apicid= [X86,APIC,KEXEC,SMP] + Format: + The number of initial APIC ID for the + corresponding CPU to be disabled at boot, + mostly used for the kdump 2nd kernel to + disable BSP to wake up multiple CPUs without + causing system reset or hang due to sending + INIT from AP to BSP. + disable_ddw [PPC/PSERIES] Disable Dynamic DMA Window support. Use this if to workaround buggy firmware. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec