Re: 32-bit FreeBSD under 64-bit KVM

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Aurelien Jarno wrote:
> Hi all,
>
> While I am able to run a 64-bit FreeBSD under a 64-bit KVM perfectly, I
> am having problems with running a 32-bit FreeBSD under the same KVM:
>
> INIT: version 2.86 booting
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> pid 34 (init), uid 0: exited on signal 11
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
> INIT: PANIC: segmentation violation! sleeping for 30 seconds.
>
> Basically the kernel boots correctly, but then the userland fails to
> work. I am using KVM-15 on an AMD64 CPU.
>
> I am able to run the same OS with -no-kvm, also I am able to run a
> 32-bit Linux under a 64-bit KVM. It seems the 32-bit support is at least
> not totally broken, though I haven't made extensive tests.
>
> Does somebody is experiencing the same problems? Do you have a solution?
>
>   

Can you try turning the '#undef AUDIT' to '#define AUDIT' in mmu.c?  
Also, change 'int dbg = 1' to 'int dbg = 0' in the same file.  Note kvm 
will be very slower after this.  dmesg will show any issues (issue a 
'echo 9 > /proc/sysrq-trigger' to make sure all messages are shown)



-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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