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 v5 3/3] Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter
Date: Tue, 12 Nov 2013 18:52:04 +0900 [thread overview]
Message-ID: <20131112095204.4902.66160.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20131112094952.4902.72689.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.
prev parent reply other threads:[~2013-11-12 9:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 9:51 [PATCH v5 0/3] x86, apic, kexec: Add disable_cpu_apic kernel parameter HATAYAMA Daisuke
2013-11-12 9:51 ` [PATCH v5 1/3] x86, apic: add bsp_physical_apicid HATAYAMA Daisuke
2013-11-14 11:16 ` HATAYAMA Daisuke
2013-11-12 9:51 ` [PATCH v5 2/3] x86, apic: Add disable_cpu_apicid kernel parameter HATAYAMA Daisuke
2013-11-12 10:44 ` Borislav Petkov
2013-11-14 10:42 ` HATAYAMA Daisuke
2013-11-12 9:52 ` HATAYAMA Daisuke [this message]
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