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Created attachment 514071[details]
Patch to pass RSDP address
Description of problem:
kdump did not work on EFI-booted machine and this problem was fixed in 6.0
by using EFI physical-mode(bz593111). But physical-mode does not work on some
firmwares, so instead of physical-mode, introduce "acpi_rsdp=" parameter to pass
ACPI RSDP address so that 2nd kernel can boot without EFI.
Version-Release number of selected component (if applicable):
kernel-2.6.32-131.0.15.el6
How reproducible:
always on some machines
Steps to Reproduce:
1.Boot system from EFI
2.Start kdump
Actual results:
Kdump does not wrok
Expected results:
Kdump works
Additional info:
bz681796 for kexec-tools
The patch is included in Len Brown's tree.
commit 4996c02306a25def1d352ec8e8f48895bbc7dea9
Author: Takao Indoh <indou.takao.com>
Date: Thu Jul 14 18:05:21 2011 -0400
If need help to test it, please contact me(Takao Indoh, tindoh).
I and Fujitsu can help it.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHSA-2011-1530.html