Messages in this thread | | | Subject | [RFC/PATCH 0/17][Kdump] Overview | From | Vivek Goyal <> | Date | Mon, 28 Mar 2005 18:55:41 +0530 |
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Hi,
This patchset restores back the kdump functionality on i386. Patchset contains the patches for user space (kexec-tools-1.101) and kernel space (2.6.12-rc1-mm3). Some of the user space patches are being released for the completeness.
This patch set performs following.
kexec-tool-1.101 (http://www.xmission.com/~ebiederm/files/kexec/kexec-tools-1.101.tar.gz) -----------------------------------------------------------------------
- Create a backup region and copy the first 640K of memory to backup region over a crash. - Generate Elf headers representing crashed memory and store in reserved region. Also appends the memmap= and elfcorehdr= parameters to command line internally to be passed to capture kernel. - Fills in the virtual addresses for linearly mapped region at the elf header creation time. This assists in limited debugging through gdb. - Adds another command line option "--crash-dump" to differentiate between kexec on panic and kexec on panic with crash dump on.
2.6.12-rc1-mm3 --------------
- Retrieve physical address of elf core headers, stored by crashed kernel. - Export dump image in ELF format through /proc/vmcore interface. - Export raw dump image through /dev/oldmem interface.
Following patches (as in series file) need to be dropped before applying the fresh ones.
crashdump-documentation.patch crashdump-memory-preserving-reboot-using-kexec.patch crashdump-routines-for-copying-dump-pages.patch crashdump-routines-for-copying-dump-pages-fixes.patch crashdump-elf-format-dump-file-access.patch crashdump-linear-raw-format-dump-file-access.patch crashdump-linear-raw-format-dump-file-access-coding-style.patch
I look forward for comments and suggestions. I have done basic testing on uni and SMP systems.
Thanks Vivek
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