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

Arnd Bergmann arnd at arndb.de
Thu Nov 5 05:53:54 PST 2015


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