We're having this problem for long time (from the old 4.0-CURRENT
days), but Mr. SUMITANI discovered a bug and fixed it.
The problem was that we got worng gdt pointer for the current cpu,
The followings is a patch to fix the problem. Thanks a lot, SUMITANI-san!
Please test this and I'll commit & MFC this if we have no problem with
I love to have APM enabled SMP system with 4.1-RELEASE.