leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[PATCH] More documentation, minor cleanup in kdump.txt

Browse Source 
Added clarification on the root device format to be used for second kernel,
as well as specifying initrd if drivers are built as modules.

Signed-off-by: Kishore Sampathkumar <kishore.sampathkumar@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vivek Goyal 2005-09-13 01:25:47 -07:00 committed by Linus Torvalds
parent f4f9eb0ea1
commit 64ccd0cfa1
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/kdump/kdump.txt
View File

@ -66,11 +66,11 @@ SETUP
c) Enable "/proc/vmcore support" (Optional, in Pseudo filesystems).
CONFIG_PROC_VMCORE=y
d) Disable SMP support and build a UP kernel (Until it is fixed).
CONFIG_SMP=n
CONFIG_SMP=n
e) Enable "Local APIC support on uniprocessors".
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_APIC=y
f) Enable "IO-APIC support on uniprocessors"
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_UP_IOAPIC=y
Note: i) Options a) and b) depend upon "Configure standard kernel features
(for small systems)" (under General setup).
@ -95,6 +95,11 @@ SETUP
hence have memory less than 4GB.
iii) Specify "irqpoll" as command line parameter. This reduces driver
initialization failures in second kernel due to shared interrupts.
iv) <root-dev> needs to be specified in a format corresponding to
the root device name in the output of mount command.
v) If you have built the drivers required to mount root file
system as modules in <second-kernel>, then, specify
--initrd=<initrd-for-second-kernel>.
5) System reboots into the second kernel when a panic occurs. A module can be
written to force the panic or "ALT-SysRq-c" can be used initiate a crash