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authorVivek Goyal <vgoyal@in.ibm.com>2005-09-09 16:10:19 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 17:03:43 -0400
commit952b649272f96d58817be889ed4b932f638a4dbe (patch)
tree782b3a7af2c0956c2dbce776e795d3a566b4d935 /Documentation
parent9d01a82e46a8dd18233121a6bc140e5576649583 (diff)
[PATCH] Kdump: Documentation Update
There are minor changes in command line options in kexec-tools for kdump. This patch updates the documentation to reflect those changes. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kdump/kdump.txt16
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
index 7ff213f4becd..1f5f7d28c9e6 100644
--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -39,8 +39,7 @@ SETUP
39 and apply http://lse.sourceforge.net/kdump/patches/kexec-tools-1.101-kdump.patch 39 and apply http://lse.sourceforge.net/kdump/patches/kexec-tools-1.101-kdump.patch
40 and after that build the source. 40 and after that build the source.
41 41
422) Download and build the appropriate (latest) kexec/kdump (-mm) kernel 422) Download and build the appropriate (2.6.13-rc1 onwards) vanilla kernel.
43 patchset and apply it to the vanilla kernel tree.
44 43
45 Two kernels need to be built in order to get this feature working. 44 Two kernels need to be built in order to get this feature working.
46 45
@@ -84,15 +83,16 @@ SETUP
84 83
854) Load the second kernel to be booted using: 844) Load the second kernel to be booted using:
86 85
87 kexec -p <second-kernel> --crash-dump --args-linux --append="root=<root-dev> 86 kexec -p <second-kernel> --args-linux --elf32-core-headers
88 init 1 irqpoll" 87 --append="root=<root-dev> init 1 irqpoll"
89 88
90 Note: i) <second-kernel> has to be a vmlinux image. bzImage will not work, 89 Note: i) <second-kernel> has to be a vmlinux image. bzImage will not work,
91 as of now. 90 as of now.
92 ii) By default ELF headers are stored in ELF32 format (for i386). This 91 ii) By default ELF headers are stored in ELF64 format. Option
93 is sufficient to represent the physical memory up to 4GB. To store 92 --elf32-core-headers forces generation of ELF32 headers. gdb can
94 headers in ELF64 format, specifiy "--elf64-core-headers" on the 93 not open ELF64 headers on 32 bit systems. So creating ELF32
95 kexec command line additionally. 94 headers can come handy for users who have got non-PAE systems and
95 hence have memory less than 4GB.
96 iii) Specify "irqpoll" as command line parameter. This reduces driver 96 iii) Specify "irqpoll" as command line parameter. This reduces driver
97 initialization failures in second kernel due to shared interrupts. 97 initialization failures in second kernel due to shared interrupts.
98 98