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Date: Wed, 13 May 2009 01:58:10 +0530
From: "K.Prasad" <prasad@linux.vnet.ibm.com>
To: Scott Wood <scottwood@freescale.com>
Subject: Re: [RFC] Hardware Breakpoint interfaces implementation for PPC64
Message-ID: <20090512202810.GF6033@in.ibm.com>
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Cc: linuxppc-dev@ozlabs.org, Benjamin Herrenschmidt <benh@au1.ibm.com>,
	paulus@samba.org
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On Tue, May 12, 2009 at 11:47:38AM -0500, Scott Wood wrote:
> On Tue, May 12, 2009 at 07:51:49AM -0400, Josh Boyer wrote:
> > On Tue, May 12, 2009 at 01:33:55AM +0530, K.Prasad wrote:
> > >- The patch is currently implemented only for PPC64 architecture. Other
> > >  architectures (especially Book-E implementations are expected to
> > >  happen in due course).
> > 
> > Does this mean you will work on transitioning Book-E implementations, or that
> > you expect the Book-E maintainers to?  I'm just curious.  The code as written
> > relies heavily on the DABR/MSR setup that ppc64 has and Book-E unfortunately
> > doesn't follow that at all.
> 
> And since there will eventually be 64-bit book E chips, we need to use
> something more specific than CONFIG_PPC64 in the #ifdef (easier now than
> figuring out which ones are breakpoint-related later).
> 
> -Scott

Sure. I will be glad to receive & incorporate suggestions in this regard
from PowerPC experts (or will 64-bit Book-E implementations be called by
a different name altogether?)

Thanks,
K.Prasad