Stefan Kisdaroczi wrote: > I installed the kernel (2.6.32.15 2.5.4 x86 32bit) which is working on > my laptop in a kvm machine. > In the virtual machine the kernel never starts and hangs.
To make sure you are not facing a KVM issue (though they are much rarer theses days - given you are using a recent KVM version...), please cross-check if the guest behaves identically when booting without KVM support (-no-kvm when using qemu-kvm). > I attached gdb to kvm and according to the cpu registers and system.map > it hangs in 'doublefault_fn'. As I'm not really familiar with gdb i'm > thankful if someone has a hint how to proceed. Thanks Build the kernel with CONFIG_DEBUG_INFO, start "gdb /linux/src/path/vmlinux", then type "bt" at the gdb prompt when the guest hangs. This should dump a symbolic backtrace - though likely not beyond the exception entry. In that case, you could help us by examining the origin of the exception (parameters to the exception handler, it specifically receives a full register state). Also note that there are graphical debuggers, e.g. ddd, that can help working with gdb without knowing all its commands by heart. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux _______________________________________________ Xenomai-help mailing list Xenomai-help@gna.org https://mail.gna.org/listinfo/xenomai-help
