From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VjJZu-00069V-5a for kexec@lists.infradead.org; Thu, 21 Nov 2013 02:01:11 +0000 Received: from m4.gw.fujitsu.co.jp (unknown [10.0.50.74]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 526AC3EE0CE for ; Thu, 21 Nov 2013 11:00:51 +0900 (JST) Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 3FC5745DE52 for ; Thu, 21 Nov 2013 11:00:51 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.nic.fujitsu.com [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 277A945DE55 for ; Thu, 21 Nov 2013 11:00:51 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 10A6E1DB8045 for ; Thu, 21 Nov 2013 11:00:51 +0900 (JST) Received: from m1000.s.css.fujitsu.com (m1000.s.css.fujitsu.com [10.240.81.136]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id B75551DB8042 for ; Thu, 21 Nov 2013 11:00:50 +0900 (JST) Subject: [PATCH v6 3/3] Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter From: HATAYAMA Daisuke Date: Thu, 21 Nov 2013 11:00:50 +0900 Message-ID: <20131121020050.2748.28393.stgit@localhost6.localdomain6> In-Reply-To: <20131121015951.2748.47826.stgit@localhost6.localdomain6> References: <20131121015951.2748.47826.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