On 12.01.2011, at 21:51, Dushyant Bansal <cs5070214@xxxxxxxxxxxxxx> wrote: > >>>> $ 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 >>>> >>>> >>> I tried to build kernel image for powerpc-750 >>> user@user:~/project/kvm$ cp arch/powerpc/configs/pmac32_defconfig .config >>> user@user:~/project/kvm$ make ARCH=powerpc menuconfig >>> >>> [I selected "KVM support for PowerPC book3s_32 processors" under virtualization menu. I have attached the final .config file] >>> >>> user@user:~/project/kvm$ make ARCH=powerpc CROSS_COMPILE=powerpc-750-linux-gnu- >>> [I get this error] >>> CHK include/linux/version.h >>> CHK include/generated/utsrelease.h >>> CALL scripts/checksyscalls.sh >>> CHK include/generated/compile.h >>> CALL arch/powerpc/kernel/systbl_chk.sh >>> CALL arch/powerpc/kernel/prom_init_check.sh >>> AS arch/powerpc/kvm/fpu.o >>> arch/powerpc/kvm/fpu.S: Assembler messages: >>> arch/powerpc/kvm/fpu.S:244: Error: Unrecognized opcode: `frsqrtes.' >>> arch/powerpc/kvm/fpu.S:250: Error: Unrecognized opcode: `fre.' >>> arch/powerpc/kvm/fpu.S:259: Error: Unrecognized opcode: `fcpsgn.' >>> make[1]: *** [arch/powerpc/kvm/fpu.o] Error 1 >>> make: *** [arch/powerpc/kvm] Error 2 >>> >> This means that your assembler doesn't understand some of the floating point instructions in the paired single emulation code. Since you don't need that code anyways, just comment them out. >> >> > Thanks a lot, Alex. After debugging some more errors, I was finally able to compile it. > > user@user:~/kvm$ make distclean > user@user:~/kvm$ cp arch/powerpc/configs/pmac32_defconfig .config > user@user:~/kvm$ make ARCH=powerpc menuconfig > [I selected "KVM support for PowerPC book3s_32 processors" under virtualization menu.] > user@user:~/kvm$ make ARCH=powerpc CROSS_COMPILE=powerpc-750-linux-gnu- > user@user:~/kvm$ make ARCH=powerpc CROSS_COMPILE=powerpc-750-linux-gnu- modules > > Then, I mounted the qemu-system-ppc image "debian_lenny_powerpc.raw". > > user@user:/$ losetup /dev/loop0 debian_lenny_powerpc.raw > user@user:/$ kpartx -a /dev/loop0 > user@user:/$ mount /dev/mapper/loop0p3 /mnt/image2 > user@user:/$ mount /dev/mapper/loop0p2 /mnt/image2/boot/ > > user@user:~/kvm$ sudo make ARCH=powerpc CROSS_COMPILE=powerpc-750-linux-gnu- INSTALL_NOD_PATH="/mnt/image2" modules_install > > [Replaced /boot/vmlinux with the generated vmlinux] > user@user:~/kvm$ cp vmlinux /mnt/image2/boot/vmlinux > > And, on booting that image [debian_lenny_powerpc.raw], I can see the new kernel image. > > # uname -r > 2.6.37-rc6+ > But still, I cannot find the kvm module. File kvm.ko is not present inside "lib/modules/2.6.37-rc6+/" > > # modprobe kvm > FATAL: Module kvm not found. > > Am I missing something? How do I build kvm module ? Did you select it as * or M? If it's *, there is no module - everything is in the kernel and (with proper udev) you should just get /dev/kvm. 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
