kexec: Overlapping memory segments error
junk at willeweb.com
Thu Jan 20 15:14:27 EST 2011
I am running a minimal system with a stripped down x86 2.6.32 Linux kernel.
From this environment I kexec to an Ubuntu Lucid i386 2.6.32 kernel. This
works fine on *most* hardware, but on some machines the kexec -l fails with
overlapping memory segments.
First I used the kexec which comes with the Lucid i386 distro (kexec-tools
2.0.1 released 13th August 2009). Then I built kexec from the head of the
git tree, which includes the patch "kexec: fix /sys/firmware/memmap memory
range overlaps". I was hopeful this patch would fix my problem, but it
still fails with an "Overlapping memory segments" error.
As a specific example, on a Dell Latitude E6410 (which uses an Intel i7
processor) the kexec -l fails with the following messages:
setup_linux_vesafb: 640x480x16 @ e1000000 +12c000
Overlapping memory segments at 0x7ffff000
One final clue: if I do the same kexec -l, but without the --initrd option I
don't get the "Overlapping memory segments..." message, but of course
without an initrd the system doesn't boot.
More information about the kexec