Re: Problems with Debian PowerPC Big-Endian Host System

[Ivan Warren]

On 5/7/2021 8:21 PM, William wrote:
> Hello,
>
> I have an IBM POWER7 server with Debian-10.0-powerpc (big-endian) and 
> qemu-system-x86 1:5.2+dfsg-10 powerpc installed on it. It's an 
> standalone system (without HMC). I'm facing issues to set up memory 
> higher than 2047MB on guest machines.
>
> Command "qemu-system-x86_64 -machine type=q35 -m 2048" returns "at 
> most 2047 MB RAM can be simulated" and with parameters "-enable-kvm or 
> accel=kvm" it returns "invalid accelerator kvm". Kvm module is loaded.
>
> Any help would be much appreciated.
>
> Thank you.
>
> WIlliam.
William,

You can only run qemu KVM when the host and guest architectures are (at 
least somewhat) identical. Otherwise you are stuck with TCG (aka 
softmmu) acceleration (architecture/Instruction set emulation) which is 
of course significantly slower.

--Ivan

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