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Date:	Fri, 07 Nov 2014 15:30:52 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Will Deacon <will.deacon@....com>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"keescook@...omium.org" <keescook@...omium.org>,
	"roland@...k.frob.com" <roland@...k.frob.com>,
	"oleg@...hat.com" <oleg@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	AKASHI Takahiro <takahiro.akashi@...aro.org>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>
Subject: Re: [RFC] ptrace: add generic SET_SYSCALL request

On Friday 07 November 2014 13:11:30 Will Deacon wrote:
> 
> > It's not that I care strongly about the interface, my main point is
> > that the changelog doesn't describe why one interface was used instead
> > the other.
> 
> I suspect the current approach was taken because it follows the same scheme
> as 32-bit ARM. If both methods are sufficient (Kees would have a better idea
> than me on that), then I don't have a strong preference.

Using the regset would probably address Oleg's comment, and would keep the
implementation architecture specific. You could even share the NT_S390_SYSTEM_CALL
number, but I don't know if there any downsides to doing that.

	Arnd
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