Re: [PATCH v6 11/17] ptrace: Allow compat to use the native siginfo

From: Arnd Bergmann
Date: Thu Nov 05 2015 - 08:54:53 EST

On Tuesday 03 November 2015 02:30:40 Yury Norov wrote:
> From: Andrew Pinski <apinski@xxxxxxxxxx>
> 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.

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