Re: [PATCH] disable ptrace BookE interface for PowerPC server processors

[Mark Kettenis <mark.kettenis@xs4all.nl>]

> Date: Wed, 30 May 2012 01:16:36 -0300
> From: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
> CC: gdb-patches@sourceware.org, prasad@linux.vnet.ibm.com
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> 
> On 05/29/2012 03:54 PM, Mark Kettenis wrote:
> 
> >> Date: Fri, 25 May 2012 00:49:39 -0300
> >> From: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
> >>
> >> On 05/22/2012 02:34 PM, Mark Kettenis wrote:
> >>
> >>> But how are you going to handle this when that functionality does
> >>> become available?  
> >>
> >>
> >> Thanks for the feedback and sorry for the late reply. I was discussing
> >> with the kernel developer responsible for the next version of the ptrace
> >> booke interface and he proposed that the 'features' field from the
> >> struct ppc_debug_info returned by ptrace PPC_PTRACE_GETHWDBGINFO call
> >> could be used to check if its availability. According to him, this field
> >> is currently 0 for servers, but once the new ptrace interface becomes
> >> functional, it will return the flag PPC_DEBUG_FEATURE_DATA_BP_RANGE
> >> enabled. Moreover, this change will not affect the behavior on embedded
> >> processors (which already has PPC_DEBUG_FEATURE_DATA_BP_RANGE and
> >> PPC_DEBUG_FEATURE_DATA_BP_MASK enabled).
> >>
> >> Please consider the new version of the patch below.
> > 
> > Certainly makes more sense to me ;)
> 
> 
> which means this is ok to apply? :)

Fine with me, but I've never (knowingly) used Linux on
POWER/PowerPC/PowerISA ;).