path: root/Documentation
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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-20 11:50:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-20 11:50:01 -0800
commit1a7dbbcc8cc6b34f3a4ae92026759fc057ffcba2 (patch)
tree1efa6cab2815c889ba8fbc928eab47f76c721e49 /Documentation
parent6c6461435611e1d4843516f2d55e8316c009112e (diff)
parent5b4d1dbc24bb6fd7179ada0f47be34e27e64decb (diff)
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/apic changes from Ingo Molnar: "Two main changes: - improve local APIC Error Status Register reporting robustness - add the 'disable_cpu_apicid=x' boot parameter for kexec booting" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, apic: Make disabled_cpu_apicid static read_mostly, fix typos x86, apic, kexec: Add disable_cpu_apicid kernel parameter x86/apic: Read Error Status Register correctly
Diffstat (limited to 'Documentation')
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 0940078edebb..3b8e262c3657 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,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.