[PATCH 16/18] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32

Yury Norov
2016-12-06T06:30:08Z

On Tue, Dec 06, 2016 at 11:55:08AM +0530, Yury Norov wrote:
> On Mon, Dec 05, 2016 at 04:34:23PM +0000, Catalin Marinas wrote:
> > On Fri, Oct 21, 2016 at 11:33:15PM +0300, Yury Norov wrote:
> > > New aarch32 ptrace syscall handler is introduced to avoid run-time
> > > detection of the task type.
> >
> > What's wrong with the run-time detection? If it's just to avoid a
> > negligible overhead, I would rather keep the code simpler by avoiding
> > duplicating the generic compat_sys_ptrace().
>
> Nothing wrong. This is how Arnd asked me to do. You already asked this
> question: http://lkml.iu.edu/hypermail/linux/kernel/1604.3/00930.html
>
> If it's still looking weird to you, I can switch back to runtime
> ptrace. But I'd like to see Arnd's opinion.

This is the Arnd's email:
https://patchwork.kernel.org/patch/7980521/

Yury.