Testing Env: Host: Ubuntu 10.04 LTS Kernel: 2.6.32-21-generic-pae Image location: http://autobuilder.pokylinux.org/milestone/20100911-1/ 1. download image from milestone build. 2. boot up qemux86 with either image 3. run command 'shutdown -h now' or 'poweroff' Then, host console will arise the following warning: Bad SWSTYLE=0x04
FYI: this is coming from the shutdown of the ethernet driver, and is due to an incomplete emulation in qemu. Definitely minor, as the priority of the case indicates.
From the last comment it seems a qemu issue, reassign
This issue still occurs on Yocto_v1.0_M2 with the below image. Image location: http://autobuilder.pokylinux.org/milestone/20101218-1/qemu/qemumips/
Per Saul's suggestion, mark it as "won't fix" as it caused by upstream qemu version and is minor.