svn commit: r208364 - head/sys/powerpc/aim

[Nathan Whitehorn]

On 05/20/10 16:07, Nathan Whitehorn wrote:
> Author: nwhitehorn
> Date: Thu May 20 21:07:58 2010
> New Revision: 208364
> URL: http://svn.freebsd.org/changeset/base/208364
>
> Log:
>    Fix a long-standing bug in the PowerPC OFW call function on SMP machines
>    where running ofwdump could cause hangs by forcing all secondary CPUs
>    into a busy wait with interrupts off during the call.
>    

In retrospect, this was poorly phrased. A non-ambiguous version:

By forcing all secondary CPUs into a busy wait with interrupts off 
during Open Firmware calls,
fix a long-standing bug in the PowerPC OFW call function on SMP machines 
where running ofwdump could cause the machine to hang.
-Nathan