hi list,

 i have noticed that the most recent vanilla kernel oopses on a P4M-HT 
(because only one CPU is registered in sysfs but 2 are informed of a 
change of state). also there are some returns out of subroutines before 
set_cpus_allowed() is performed to restore the mask prior to entering 
the subroutine (this should not matter on uniprocessor systems, but 
still...).

 this patch should fix these 2 issues. for the first one, it registerers 
all logical cpu's and a tiny modification is made in cpufreq.c to 
perform a policy change on all siblings.

 i noticed, that this should be superseeded by the patches that dominik 
has submitted over a month ago. sorry, since i didn't see them in the 
kernel i did my own thing. maybe they are usefull still.

christian