From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] ptrace: add generic SET_SYSCALL request
Date: Fri, 07 Nov 2014 15:30:52 +0100 [thread overview]
Message-ID: <6654405.Rf26mgoaDJ@wuerfel> (raw)
In-Reply-To: <20141107131129.GF18916@arm.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Will Deacon <will.deacon@arm.com>,
"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
"keescook@chromium.org" <keescook@chromium.org>,
"roland@hack.frob.com" <roland@hack.frob.com>,
"oleg@redhat.com" <oleg@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
"dsaxena@linaro.org" <dsaxena@linaro.org>
Subject: Re: [RFC] ptrace: add generic SET_SYSCALL request
Date: Fri, 07 Nov 2014 15:30:52 +0100 [thread overview]
Message-ID: <6654405.Rf26mgoaDJ@wuerfel> (raw)
In-Reply-To: <20141107131129.GF18916@arm.com>
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
next prev parent reply other threads:[~2014-11-07 14:30 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 7:47 [RFC] ptrace: add generic SET_SYSCALL request AKASHI Takahiro
2014-11-07 7:47 ` AKASHI Takahiro
2014-11-07 9:30 ` Arnd Bergmann
2014-11-07 9:30 ` Arnd Bergmann
2014-11-07 11:55 ` Will Deacon
2014-11-07 11:55 ` Will Deacon
2014-11-07 12:03 ` Arnd Bergmann
2014-11-07 12:03 ` Arnd Bergmann
2014-11-07 12:11 ` Russell King - ARM Linux
2014-11-07 12:11 ` Russell King - ARM Linux
2014-11-07 12:44 ` Arnd Bergmann
2014-11-07 12:44 ` Arnd Bergmann
2014-11-07 13:11 ` Will Deacon
2014-11-07 13:11 ` Will Deacon
2014-11-07 14:30 ` Arnd Bergmann [this message]
2014-11-07 14:30 ` Arnd Bergmann
2014-11-07 16:44 ` Kees Cook
2014-11-07 16:44 ` Kees Cook
2014-11-07 23:05 ` Roland McGrath
2014-11-07 23:05 ` Roland McGrath
2014-11-07 12:27 ` Will Deacon
2014-11-07 12:27 ` Will Deacon
2014-11-10 6:36 ` AKASHI Takahiro
2014-11-10 6:36 ` AKASHI Takahiro
2014-11-07 14:04 ` Oleg Nesterov
2014-11-07 14:04 ` Oleg Nesterov
2014-11-12 10:46 ` AKASHI Takahiro
2014-11-12 10:46 ` AKASHI Takahiro
2014-11-12 11:00 ` Will Deacon
2014-11-12 11:00 ` Will Deacon
2014-11-12 11:06 ` AKASHI Takahiro
2014-11-12 11:06 ` AKASHI Takahiro
2014-11-12 11:13 ` Will Deacon
2014-11-12 11:13 ` Will Deacon
2014-11-12 11:19 ` Arnd Bergmann
2014-11-12 11:19 ` Arnd Bergmann
2014-11-12 12:05 ` Russell King - ARM Linux
2014-11-12 12:05 ` Russell King - ARM Linux
2014-11-13 7:02 ` AKASHI Takahiro
2014-11-13 7:02 ` AKASHI Takahiro
2014-11-13 10:21 ` Arnd Bergmann
2014-11-13 10:21 ` Arnd Bergmann
2014-11-13 14:49 ` Ulrich Weigand
2014-11-13 14:49 ` Ulrich Weigand
2014-11-13 22:25 ` Arnd Bergmann
2014-11-13 22:25 ` Arnd Bergmann
2014-11-14 1:40 ` AKASHI Takahiro
2014-11-14 1:40 ` AKASHI Takahiro
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