[Cbe-oss-dev] [PATCH 02/21] cell: wrap master run control bit

[Noguchi, Masato (TDG)]

> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd at arndb.de]
> Subject: Re: [Cbe-oss-dev] [PATCH 02/21] cell: wrap master run control bit
> 
> On Wednesday 05 December 2007, Jeremy Kerr wrote:
> > An outstanding enhancement for the PS3 would be to add a guard to check
> > for incorrect access to the spu problem state when the spu context is
> > disabled.  This check could be implemented with a flag added to the spu
> > context that would inhibit mapping problem state pages, and a routine
> > to unmap spu problem state pages.  When the spu is enabled with
> > ps3_enable_spu() the flag would be set allowing pages to be mapped,
> > and when the spu is disabled with ps3_disable_spu() the flag would be
> > cleared and mapped problem state pages would be unmapped.
> 
> What is the status on this enhancement? I remember vaguely that we held
> back on including this patch in 2.6.22 because we had agreed to do the
> full solution soon. Should we now really do the hack in 2.6.25?

Sorry.  I have no progress for lack of time.
Now I stacked a work for this feature on my low priority queue, because it is for a security only on PS3 linux kernel and currently it is not much-needed.  Should I move it to higher priority?

I feel this patch is any good than current workaround, but there is no strong demand.

  > Masato.Noguchi at jp.sony.com <