public inbox for kexec@lists.infradead.org
 help / color / mirror / Atom feed
From: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
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
Subject: [PATCH v4 3/3] Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter
Date: Wed, 23 Oct 2013 00:01:35 +0900	[thread overview]
Message-ID: <20131022150135.24240.40322.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20131022150015.24240.39686.stgit@localhost6.localdomain6>

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 <d.hatayama@jp.fujitsu.com>
---
 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: <int>
+			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

  parent reply	other threads:[~2013-10-22 15:02 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-22 15:01 [PATCH v4 0/3] x86, apic, kexec: Add disable_cpu_apic kernel parameter HATAYAMA Daisuke
2013-10-22 15:01 ` [PATCH v4 1/3] x86, apic: Don't count the CPU with BP flag from MP table as booting-up CPU HATAYAMA Daisuke
2013-11-08 16:08   ` Vivek Goyal
2013-11-11  2:52     ` HATAYAMA Daisuke
2013-11-11 16:52       ` Vivek Goyal
2013-11-12  0:40         ` HATAYAMA Daisuke
2013-11-12  9:58           ` HATAYAMA Daisuke
2013-10-22 15:01 ` [PATCH v4 2/3] x86, apic: Add disable_cpu_apicid kernel parameter HATAYAMA Daisuke
2013-10-22 15:01 ` HATAYAMA Daisuke [this message]
     [not found] ` <20131022220803.GA32387@anatevka.fc.hp.com>
2013-10-23  0:05   ` [PATCH v4 0/3] x86, apic, kexec: Add disable_cpu_apic " HATAYAMA Daisuke
2013-10-23 15:51     ` Vivek Goyal
2013-10-24  1:42       ` HATAYAMA Daisuke
2013-10-25 11:05         ` Petr Tesarik
2013-10-29  0:53           ` HATAYAMA Daisuke
2013-10-29  7:39             ` Petr Tesarik
2013-10-24  5:50       ` Eric W. Biederman
     [not found]     ` <20131031005812.GA15459@anatevka.fc.hp.com>
2013-10-31  4:43       ` HATAYAMA Daisuke
2013-10-31 13:27       ` Vivek Goyal
2013-11-01  0:31         ` Simon Horman
2013-11-04  7:08         ` HATAYAMA Daisuke
2013-10-29 14:21 ` Baoquan He
2013-10-30  0:44   ` HATAYAMA Daisuke
2013-10-30  6:06     ` Baoquan He
2013-10-30  9:48       ` HATAYAMA Daisuke
2013-10-30 15:27   ` Baoquan He
2013-11-08  3:30 ` Baoquan He
2013-11-08  4:13   ` HATAYAMA Daisuke
     [not found] ` <20131106190232.GA28119@anatevka.fc.hp.com>
2013-11-11  4:49   ` HATAYAMA Daisuke

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20131022150135.24240.40322.stgit@localhost6.localdomain6 \
    --to=d.hatayama@jp.fujitsu.com \
    --cc=akpm@linux-foundation.org \
    --cc=bp@alien8.de \
    --cc=ebiederm@xmission.com \
    --cc=fengguang.wu@intel.com \
    --cc=hpa@linux.intel.com \
    --cc=jingbai.ma@hp.com \
    --cc=kexec@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=vgoyal@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox