Subject: Re: [PATCH 2/2] [PowerPC Book3E] Introduce new ptrace debug feature flag

From: David Gibson <[email-masked]>
Date: Wed, 21 Dec 2011 11:55:02 +1100

On Thu, Dec 08, 2011 at 04:53:30PM +0530, K.Prasad wrote:
> While PPC_PTRACE_SETHWDEBUG ptrace flag in PowerPC accepts
> PPC_BREAKPOINT_MODE_EXACT mode of breakpoint, the same is not intimated to the
> user-space debuggers (like GDB) who may want to use it. Hence we introduce a
> new PPC_DEBUG_FEATURE_DATA_BP_EXACT flag which will be populated on the
> "features" member of "struct ppc_debug_info" to advertise support for the
> same on Book3E PowerPC processors.

Hrm.  I had assumed the reason there wasn't a feature bit for EXACT
originally was that EXACT breakpoints were *always* supposed to be
supported by the new interface.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson