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[Qemu-devel] Guest OS kernel panic when using '-kernel-kqemu'
From: |
Paul Moore |
Subject: |
[Qemu-devel] Guest OS kernel panic when using '-kernel-kqemu' |
Date: |
Thu, 15 Nov 2007 08:25:33 -0500 |
User-agent: |
KMail/1.9.7 |
I'm currently running into a problem when running recent Linux kernels as a
guest under QEMU with KQEMU kernel acceleration. My problem is that early in
the boot process the guest kernel panics, the host OS appears to be
unaffected. The panic can be different depending on the guest Linux
distribution/kernel but the panic is repeatable and consistent. In all
cases, removing the '-kernel-kqemu' flag and only making use of userspace
acceleration appears to solve the problem. Using both the QEMU monitor and
the linux lsmod reference count I have verified that KQEMU is being used by
QEMU.
For reference, the host OS is a Gentoo 2007.0 x86 system with the Gentoo Linux
kernel 2.6.23-r1, QEMU 0.9.0 and KQEMU 1.3.0_pre11; greater detail can be
found in the Gentoo bug report[1]. I have also noticed this on other Gentoo
based systems as well.
I am able to reproduce this on a regular basis using the Fedora 8 install DVD
and the following command line:
# qemu -m 256 -kernel-kqemu -cdrom Fedora-8-i386-DVD.iso -boot d f8.img
However, using a sample image[2] and the following command line I do not see
any problems:
# qemu -m 256 -kernel-kqemu linux-0.2.img
Any assistance or pointers to a solution would be greatly appreciated. If
there is anything I can do to help track down the problem further please let
me know.
Thanks,
-Paul
[1] http://bugs.gentoo.org/show_bug.cgi?id=199151
[2] http://fabrice.bellard.free.fr/qemu/linux-0.2.img.bz2
- [Qemu-devel] Guest OS kernel panic when using '-kernel-kqemu',
Paul Moore <=