linux-kernel - Re: [PATCH v5 0/7] arm64: Add ftrace support

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: <20140311215844.70ada249@gandalf.local.home>
Date:	Tue, 11 Mar 2014 21:58:44 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc:	Will Deacon <will.deacon@....com>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"mingo@...hat.com" <mingo@...hat.com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"tim.bird@...ymobile.com" <tim.bird@...ymobile.com>,
	"gkulkarni@...iumnetworks.com" <gkulkarni@...iumnetworks.com>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>,
	"arndb@...db.de" <arndb@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 0/7] arm64: Add ftrace support

On Wed, 12 Mar 2014 10:47:20 +0900
AKASHI Takahiro <takahiro.akashi@...aro.org> wrote:

> This happens when a header file, elf.h, on "your host machine" does not have
> definitions of EM_AARCH64 nor R_AARCH64_ABS64 because "recordmcount" is a binary
> utility on host(x86), not target. It is very likely for most distros.
> (I mentioned this in the cover letter, but the description might not be clear.)
> 
> Possible solutions are:
> 1) Define both macros directly in scripts/recordmcount.c
> 2) Use perl version of recordmcount
> 
> Currently I take 1), but it is a workaround.
> 2) should work with my current patch, too. But you need to remove HAVE_C_RECORDCOUNT
> from arm64/Kconfig.
> 
> Which one do you prefer? I will include a fix for 1) in the next revision, anyway.
> 

I'd recommend #1, where you add this:

/* AARCH64 is new, and most headers don't define it. */
#ifndef EM_AARCH64
#define EM_AARCH64  ##
#define R_AARCH64_ABS64 ##
#endif

Obviously fill in the blank for ##

-- Steve
--
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/