On 07.01.2011, at 14:38, Dushyant Bansal wrote: > On Friday 07 January 2011 06:07 PM, Alexander Graf wrote: >> >>> 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? >> > But on http://www.linux-kvm.org/page/PowerPC, it states "current development is aimed at running 440 linux kernel as guests on 440 linux hosts". I want to use kvm on powerpc but don't have powerpc hardware :) I see :). Keep in mind that running this in Qemu is really very slow and used 32-bit PowerPC hardware is very cheap on ebay these days and an order of magnitude faster than an emulated ppc machine. >>> 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. >> > When I run "make menuconfig" on the guest os (debian-powerpc), it gives "KVM support for PowerPC book3s_32 processors" under virtualization menu. Is it the correct KVM module for powerpc-750 ? (screenshot attached ) . And, during cross compiling on the host os, after running "make ARCH=powerpc menuconfig" the option "KVM support " disappears. $ cp arch/powerpc/configs/pmac32_defconfig .config $ make menuconfig ARCH=powerpc seems to work. I'm not sure what default config is taken by default, but apparently one of the KVM constraints isn't fulfilled. Since you want to build a kernel for a pmac32 anyways, just take that config as the basis or use the one from a VM you already have working :). Alex -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
