Re: KVM on 440GP

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On Fri, Jan 22, 2010 at 11:13 AM, Corey Minyard <minyard@xxxxxxx> wrote:
>
> I tried using telnet for the console, and it worked for a little while:
>
> root@ebony:~# ./qemu-system-ppcemb --enable-kvm -nographic -m 128 -M bamb
> oo -kernel uImage.bamboo -L . -append "" -m 64 -serial tcp::4444,server
> QEMU waiting for connection on: tcp:0.0.0.0:4444,server
> Truncating memory to 64 MiB to fit SDRAM controller limits.
> QEMU 0.12.50 monitor - type 'help' for more information
> (qemu) info kvm
> kvm support: enabled
> (qemu)
>
> So things are getting closer, but there's no output on the telnet screen.
>
> Doing an "info registers" causes qemu to abort.

I believe that's a known bug.

> Now, nothing should have changed, but it's crashing at startup:
>
> root@ebony:~# ./qemu-system-ppcemb -nographic -m 128 -M bamboo -kernel uI
> mage.bamboo -L . -append "" -m 64 -serial tcp::4444,server
> QEMU waiting for connection on: tcp:0.0.0.0:4444,server
> Truncating memory to 64 MiB to fit SDRAM controller limits.

I don't think it's related, but there must be a silly bug in
ppc4xx_sdram_adjust(). 128MB should require just a single bank in the
SDRAM controller.

> QEMU 0.12.0 monitor - type 'help' for more information
> (qemu) qemu: fatal: Trying to execute code outside RAM or ROM at 0x00000000
>
> NIP 00000000   LR 00000000 CTR 00000000 XER 00000000
> MSR 00000000 HID0 00000300  HF 00000000 idx 0
> Segmentatio
>
> backtrace show the invalid memory address, and the segfault is due to
> something happening while printing out the information.

If you provide the backtrace, I can see if it looks familiar...

-Hollis
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