Some more notes: I'm using AMD-V and Nested Paging. Especially nested paging made a big positive difference in performance, up to 60-70% faster for compilation when enabled. So the VT-x in the bug description does not apply to me.
Prior to compiling my own kernel I tried linux-rt kernel, but WinXP SMP guest would not even boot with that, died with blue screen every time.
Some more notes: I'm using AMD-V and Nested Paging. Especially nested paging made a big positive difference in performance, up to 60-70% faster for compilation when enabled. So the VT-x in the bug description does not apply to me.
Prior to compiling my own kernel I tried linux-rt kernel, but WinXP SMP guest would not even boot with that, died with blue screen every time.