Re: Qemu / KVM On Powermac G5 MP970

[BALATON Zoltan]

On Mon, 23 Jan 2023, Dan Whitehouse wrote:
> crab@powermac-g5:~/Documents/Qemu$ uname -a
> Linux powermac-g5 6.0.0-6-powerpc64 #1 SMP Debian 6.0.12-1 (2022-12-09) ppc64 
> GNU/Linux
[...]
> Result:
>
> dmesg is flooded with:
>
> #!/bin/bash
>
> [22936.303544] Couldn't emulate instruction 0x00000000 (op 0 xop 0)
> [22936.315006] kvmppc_exit_pr_progint: emulation at 100 failed (00000000)
>
> Exactly as described here:
>
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg898334.html

So a follow up on that message said it worked with older kernels at least 
on G4:

https://www.mail-archive.com/qemu-devel@nongnu.org/msg899417.html

but failed with latest Debian. Maybe you could try different host kernel 
versions to see if you can find a working one and if so you could bisect 
the Linux change that caused the regression? I'm not sure it's a QEMU but 
but maybe KVM one so first try to determine if it's in your host kernel or 
QEMU.

Regards,
BALATON Zoltan