Re: [RFC] new MSR r/w functions per CPU

["H. Peter Anvin" <hpa@zytor.com>]

Dave Jones wrote:
> 
> Can you explain this a little further? I'm fairly certain
> there are places in the kernel already doing this (or similar).
> In fact, I cut-n-pasted most of the above from similar code in the
> powernow-k8 driver.  What exactly can we deadlock on?
> 

I wanted to change the MSR driver to do the above, and Alan Cox objected 
that with realtime priority routines and/or user set affinity, that code 
might never be executed, so I retained the IPI-based code (which 
executes at the target processor at interrupt priority.)

	-hpa