That's probably because you updated your guest kernel to one that supports PSCI v0.2 and therefore ignores the incorrect function IDs in the DT (as it should). I've sent a fix to qemu-devel@ today: http://lists.gnu.org/archive/html/qemu-devel/2014-08/msg01179.html On Wed, Aug 6, 2014 at 6:48 PM, Joel Schopp <joel.schopp@xxxxxxx> wrote: > It turns out that after a recent rebase of my kernel and qemu to the > latest the problem is fixed. Rather than hunt down what fixed it I'm > just accepting the win and moving on. -smp 4 now works. > > -Joel > > On 08/06/2014 11:15 AM, Christoffer Dall wrote: >> On Tue, Aug 5, 2014 at 4:18 PM, Joel Schopp <joel.schopp@xxxxxxx> wrote: >>> On 08/04/2014 07:35 PM, Mathew Li wrote: >>>> Hi, >>>> >>>> I have a quick question. How do we add a hard disk to the qemu ARM VM? >>>> >>>> I tried: >>>> >>>> qemu-system-aarch64 -machine virt -hda disk.img -kernel image -initrd initrd.img >>>> >>>> qemu-system-aarch64 -machine virt -sd disk.img -kernel image -initrd initrd.img >>>> >>>> qemu-system-aarch64 -machine virt -mtdblock disk.img -kernel image >>>> -initrd initrd.img >>>> >>>> Nothing seems to work. I am not able to see any disk (i.e. dev/sdX) >>>> inside guest OS. >>> I've been running something like this: >>> >>> qemu-system-aarch64 -smp 1 --enable-kvm -nographic -netdev tap,id=t0,ifname=tap0,script=no,downscript=no,vhost=on -device virtio-net-device,netdev=t0,id=nic0 \ >>> -kernel /extra/rootfs/boot/Image -drive file=/extra/rootfs.img,id=fs -device virtio-blk-device,drive=fs -m 512 -M virt -cpu host -append "console=ttyAMA0 console=ttyS0 root=/dev/vda" >>> >>> >>> On my system -smp 2 or higher hangs in the guest kernel. >> The -smp 2 hang issue is probably due to a missing PSCI v0.2 follow-up >> patch to QEMU, you can try: >> https://git.linaro.org/people/christoffer.dall/qemu-arm.git/shortlog/refs/heads/psci2-smp-fix >> >> [disclaimer: there may be a better fix somewhere on the qemu list, I >> haven't kept track the last couple of days] >> >> -Christoffer > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
