From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Yury Norov <ynorov@caviumnetworks.com>, catalin.marinas@arm.com,
        linux-kernel@vger.kernel.org, pinskia@gmail.com,
        Prasun.Kapoor@caviumnetworks.com, Nathan_Lynch@mentor.com,
        agraf@suse.de, klimov.linux@gmail.com,
        Andrew Pinski <Andrew.Pinski@caviumnetworks.com>, broonie@kernel.org,
        jan.dakinevich@gmail.com, Andrew Pinski <apinski@cavium.com>,
        ddaney.cavm@gmail.com, bamvor.zhangjian@huawei.com,
        philipp.tomsich@theobroma-systems.com, andrey.konovalov@linaro.org,
        christoph.muellner@theobroma-systems.com
Subject: Re: [PATCH v6 11/17] ptrace: Allow compat to use the native siginfo
Date: Thu, 05 Nov 2015 14:53:54 +0100
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On Tuesday 03 November 2015 02:30:40 Yury Norov wrote:
> From: Andrew Pinski <apinski@cavium.com>
> 
> Set COMPAT_USE_NATIVE_SIGINFO to be true for non AARCH32 tasks.
> 
> With ARM64 ILP32 ABI, we want to use the non-compat
> siginfo as we want to simplify signal handling for this new ABI.
> This patch just adds a new define COMPAT_USE_NATIVE_SIGINFO and
> if it is true then read/write in the compat case as it was the
> non-compat case.

Why does this use compat_ptrace_request()? I assume there is
a good reason for it, but I'm surprised you don't use the native
64-bit ptrace syscall.

	Arnd
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