Re: error: building kvm for powerpc using cross compiler on x86

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On 07.01.2011, at 07:52, Dushyant wrote:

> Hi,
> 
> Thanks for the response.
> My aim is to install kvm on a powerpc system. I will give a detailed
> description of the environment.
> 
> Host arch: x86
> kernel: 2.6.32.25 (ubuntu 10.04 32 bit)
> I have emulated powerpc using "qemu-system-ppc" and installed debian on
> top of this.
> 
> guest os:
> debian-507-powerpc (2.6.26-1-powerpc)
> contents of /proc/cpuinfo:
> processor	: 0
> cpu		: 740/750
> temperature 	: 62-64 C (uncalibrated)
> clock		: 1000.000000MHz
> revision	: 3.1 (pvr 0008 0301)
> bogomips	: 33.02
> timebase	: 16600733
> platform	: PowerMac
> model		: Power Macintosh
> machine		: Power Macintosh
> motherboard	: AAPL,PowerMac G3 MacRISC
> detected as	: 49 (PowerMac G3 (Silk))
> pmac flags	: 00000000
> pmac-generation	: OldWorld

This emulates a G3, not a 440 :). But you're lucky - the G3 is also supported by KVM. Mind if I ask why you want to virtualize inside of an emulated environment?

> I want to use kvm on this guest os. I have installed kvm-userspace
> application. Now, I require kvm kernel module. I have some questions.

Just compile any recent qemu version (0.14 as soon as out, otherwise just take a git snapshot).

> 1. As x86 systems are distributed with kvm kernel module(kvm.ko,
> kvm-intel.ko, kvm-amd.ko), is there any powerpc system with kvm kernel
> modules.

I'm not aware of any distribution that precompiles KVM. If you configure it as a module, you'll end up with "kvm.ko".

> 2. Is it possible to run kvm on powerpc-750, powerpc-970  or both

Both :).

> 3. How should I try to build kvm kernel module for guest os. I have two
> options: to compile kernel with kvm inside guest os or to cross compile
> kernel for powerpc on host os.

I always compile natively on a real 970 box. But I don't see why cross-compilation would fail. Just make sure you're building for the correct target and you'll get an option in the Virtualiztion menu.

Also, please don't top-post.


Alex

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