linux-kernel - Re: [PATCH v3 00/15] uprobes: Add uprobes support for ARM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <52A0DF6A.1010402@linaro.org>
Date:	Thu, 05 Dec 2013 15:17:46 -0500
From:	David Long <dave.long@...aro.org>
To:	"Jon Medhurst (Tixy)" <tixy@...aro.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
CC:	Taras Kondratiuk <taras.kondratiuk@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Rabin Vincent <rabin@....in>, Oleg Nesterov <oleg@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org,
	Linaro Networking <linaro-networking@...aro.org>
Subject: Re: [PATCH v3 00/15] uprobes: Add uprobes support for ARM

Masami/Tixy,

As I just noted in a previous email the kprobes.h thing has come back to 
haunt me.  Something more is needed in my last patchset.  Tixy's 
suggestion regarding the arch_specific_insn structure:

> However, I also wonder if we should instead leave arch_specific_insn as
> a kprobes specific structure and on ARM define it in terms of a new more
> generic 'struct probe_insn'? The drawback with that is that we'd
> probably end up with a struct just containing a single member which
> seems a bit redundant:
>
> struct arch_specific_insn {
> 	struct probe_insn pinsn;
> };
>
> Thought's anyone?

...got me thinking.  When I do as he suggests and create a new 
arch-specific structure for sharing between kprobes and uprobes then it 
turns out simply #define'ing the arch_specific_insn structure tag to the 
new structure tag in arch/arm/include/kprobes.h makes everything happy. 
  When KPROBES is not configured that include file is (still) not 
included and the generic kprobes.h include file still continues to make 
a dummy structure for it.  My question is:  Is it too hacky to use a 
#define for a structure tag this way?

-dl

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/