linux-kernel - Re: [PATCH 19/25] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32

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Message-ID: <20160422171009.GR2998@e104818-lin.cambridge.arm.com>
Date:	Fri, 22 Apr 2016 18:10:09 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Yury Norov <ynorov@...iumnetworks.com>
Cc:	arnd@...db.de, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-s390@...r.kernel.org, pinskia@...il.com,
	Prasun.Kapoor@...iumnetworks.com, schwab@...e.de,
	broonie@...nel.org, linux-doc@...r.kernel.org,
	heiko.carstens@...ibm.com, agraf@...e.de, klimov.linux@...il.com,
	bamvor.zhangjian@...wei.com, schwidefsky@...ibm.com,
	Nathan_Lynch@...tor.com, joseph@...esourcery.com,
	christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH 19/25] arm64: ptrace: handle ptrace_request differently
 for aarch32 and ilp32

On Wed, Apr 06, 2016 at 01:08:41AM +0300, Yury Norov wrote:
> Here new aarch32 ptrace syscall handler is introsuced to avoid run-time
> detection of the task type.

The reason for this patch isn't clear to me. What's wrong with the
run-time detection? It's not some performance critical code.

-- 
Catalin