linux-kernel - Re: [PATCHv2 6/6] x86/signal: add SA_{X32,IA32}_ABI sa

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Message-ID: <CALCETrWdkG26n=rK5C4GPs1U=Xq_f1JtdsNTaMufurpdNJzRdw@mail.gmail.com>
Date:	Wed, 6 Jul 2016 07:36:14 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Dmitry Safonov <dsafonov@...tuozzo.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dmitry Safonov <0x7f454c46@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Ingo Molnar <mingo@...hat.com>,
	Cyrill Gorcunov <gorcunov@...nvz.org>, xemul@...tuozzo.com,
	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...nel.org>, X86 ML <x86@...nel.org>
Subject: Re: [PATCHv2 6/6] x86/signal: add SA_{X32,IA32}_ABI sa_flags

On Wed, Jun 29, 2016 at 3:57 AM, Dmitry Safonov <dsafonov@...tuozzo.com> wrote:
> Introduce new flags that defines which ABI to use on creating sigframe.
> Those flags kernel will set according to sigaction syscall ABI,
> which set handler for the signal being delivered.
>
> So that will drop the dependency on TIF_IA32/TIF_X32 flags on signal deliver.
> Those flags will be used only under CONFIG_COMPAT.
>
> Similar way ARM uses sa_flags to differ in which mode deliver signal
> for 26-bit applications (look at SA_THIRYTWO).

Reviewed-by: Andy Lutomirski <luto@...nel.org>

>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Cyrill Gorcunov <gorcunov@...nvz.org>
> Cc: Pavel Emelyanov <xemul@...tuozzo.com>
> Cc: x86@...nel.org
> Signed-off-by: Dmitry Safonov <dsafonov@...tuozzo.com>