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| author | Vivek Goyal <vgoyal@in.ibm.com> | 2005-09-09 13:10:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 14:03:43 -0700 |
| commit | 952b649272f96d58817be889ed4b932f638a4dbe (patch) | |
| tree | 782b3a7af2c0956c2dbce776e795d3a566b4d935 /Documentation/kdump | |
| parent | 9d01a82e46a8dd18233121a6bc140e5576649583 (diff) | |
| download | lwn-952b649272f96d58817be889ed4b932f638a4dbe.tar.gz lwn-952b649272f96d58817be889ed4b932f638a4dbe.zip | |
[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/kdump')
| -rw-r--r-- | Documentation/kdump/kdump.txt | 16 |
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 and apply http://lse.sourceforge.net/kdump/patches/kexec-tools-1.101-kdump.patch and after that build the source. -2) Download and build the appropriate (latest) kexec/kdump (-mm) kernel - patchset and apply it to the vanilla kernel tree. +2) Download and build the appropriate (2.6.13-rc1 onwards) vanilla kernel. Two kernels need to be built in order to get this feature working. @@ -84,15 +83,16 @@ SETUP 4) Load the second kernel to be booted using: - kexec -p <second-kernel> --crash-dump --args-linux --append="root=<root-dev> - init 1 irqpoll" + kexec -p <second-kernel> --args-linux --elf32-core-headers + --append="root=<root-dev> init 1 irqpoll" Note: i) <second-kernel> has to be a vmlinux image. bzImage will not work, as of now. - ii) By default ELF headers are stored in ELF32 format (for i386). This - is sufficient to represent the physical memory up to 4GB. To store - headers in ELF64 format, specifiy "--elf64-core-headers" on the - kexec command line additionally. + ii) By default ELF headers are stored in ELF64 format. Option + --elf32-core-headers forces generation of ELF32 headers. gdb can + not open ELF64 headers on 32 bit systems. So creating ELF32 + headers can come handy for users who have got non-PAE systems and + 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. |