p620 hangs instantiating rtas at 0x00000000deadbeef

[Olaf Hering]

 On Fri, Jul 08, Olaf Hering wrote:

>  On Wed, Feb 09, Olaf Hering wrote:
> 
> > 
> > Current Linus tree hangs on p620, xmon does not trigger.
> > rc3 was already broken.
> > And 2.6.10 doesnt work either...
> 
> linux-2.6.9-rc2-bk9 works, linux-2.6.9-rc2-bk10, see attached logs.

The truth is hidden in the changes between 2.6.10-bk11 and -bk12.

http://penguinppc.org/~olaf/rs64-breakage/

Everything up to 2.6.9-rc2-bk1 worked ok, -rc2-bk2 was broken due to the vsid changes.
This change fixed it, up to 2.6.9-rc2-bk9
http://ozlabs.org/pipermail/linuxppc64-dev/2004-September/002278.html
Then proc_claim started to return 0xdeadbeef in -bk10.
Workaround is to turn this value into PROM_ERROR. This helps up to 2.6.10-bk11,
-bk12 is stuck after kicking other cpus.