Re: [PATCH 0/2] kvm/e500: fix bugs
On Mon, 2009-03-16 at 12:35 +0800, Liu Yu wrote: Hollis, Finally I found the reason for unstable kvm in SMP. Congratulations. :) do you think the modification is OK? They look fine to me, as far as I understand the e500 MMU. ;) Feel free to send to Avi. -- Hollis Blanchard IBM Linux Technology Center -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Kvm-userspace for powerpc is broken
On Mon, 2009-03-16 at 18:17 +0800, Liu Yu-B13201 wrote: 44x code was backported to qemu.git and e500 code was directly submmited to qemu.git. There is no support in kvm-userspace/qemu so far, and it's broken now. I took a quick look, and found that the qemu.git uses kvm.h, while kvm-userspace/qemu uses qemu-kvm.h instead. Does anyone know how to fix this correctly? I abandoned kvm-userspace as soon as I got upstream qemu working... I just didn't have the development bandwidth to try to maintain both. If you want to work on kvm-userspace, just remember that nobody will send that code to upstream qemu for you; you will *also* need to send it to qemu yourself. (As a side note, I'm not sure what the state of KVM PPC is in upstream qemu right now... probably needs testing again.) -- Hollis Blanchard IBM Linux Technology Center -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
qemu ppcemb illegal instruction
Hi Liu, I could trace the illegal instruction during qemu startup down to this function in cpu-all.h cpu_get_real_ticks(void) which is using the time base registers - the crash is during vm_start - cpu_enable_ticks which calls cpu_get_real_ticks. I believe e500 is using SPR's for this purpose and not dedicated time base registers - am I missing a patch to this file? This is what I have in cpu_get_real_ticks - ( _ARCH_PPC is defined and not ARCH_PPC64) __asm__ __volatile__ ( mftbu %1\n\t mftb%L0\n\t mftbu %0\n\t cmpw%0,%1\n\t bne $-16 : =r (retval), =r (junk)); I did try to short circuit this by borrowing this from the code below to see if I can avoid the crash which I could do so - static int64_t ticks = 0; return ticks++ qemu does boot up and goes to the qemu prompt when I telnet to the boardip/port but I don't seem to get any login prompt for the VM - bear with me..but I am fiddling with this - sending this out anyway for suggestions.. On my 8548 CDS board /bin # ./qemu-system-ppcemb -enable-kvm -m 64 -nographic -M mpc8544ds -kernel /tmp/uImage.8544 -initrd /tmp/rootfs.ext2.gz.small -L /usr/local/share/qemu -append root=/dev/ram rw console=ttyS0,115200 -serial tcp::,server goes to qemu prompt when I telnet to board ip / port (qemu) (qemu) info version 0.9.1 (qemu) info network VLAN 0 devices: user.0: virtio.0: model=virtio,macaddr=52:54:00:12:34:56 (qemu) info kvm kvm support: enabled (qemu) info status VM status: running On the telnet session: $ telnet 10.11.224.180 Trying 10.11.224.180... Connected to 10.11.224.180 (10.11.224.180). Escape character is '^]'. nothing here i'd appreciate your reply.. Thanks, Rahul -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
