From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=0OOB=TB=vger.kernel.org=linux-kernel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=ham
	autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id DF113C43219
	for <linux-kernel@archiver.kernel.org>; Wed,  1 May 2019 16:18:03 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id B2C1C208C3
	for <linux-kernel@archiver.kernel.org>; Wed,  1 May 2019 16:18:03 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1727218AbfEAQSC (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Wed, 1 May 2019 12:18:02 -0400
Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:33514 "EHLO
        foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1726473AbfEAQSC (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 1 May 2019 12:18:02 -0400
Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249])
        by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 718BEA78;
        Wed,  1 May 2019 09:18:01 -0700 (PDT)
Received: from e107155-lin (e107155-lin.cambridge.arm.com [10.1.196.42])
        by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A8D143F719;
        Wed,  1 May 2019 09:17:58 -0700 (PDT)
Date:   Wed, 1 May 2019 17:17:52 +0100
From:   Sudeep Holla <sudeep.holla@arm.com>
To:     Oleg Nesterov <oleg@redhat.com>
Cc:     x86@kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Richard Weinberger <richard@nod.at>, jdike@addtoit.com,
        Steve Capper <Steve.Capper@arm.com>,
        Haibo Xu <haibo.xu@arm.com>, Bin Lu <bin.lu@arm.com>,
        Andy Lutomirski <luto@kernel.org>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH v3 1/4] ptrace: move clearing of TIF_SYSCALL_EMU flag to
 core
Message-ID: <20190501161752.GA12498@e107155-lin>
References: <20190430170520.29470-1-sudeep.holla@arm.com>
 <20190430170520.29470-2-sudeep.holla@arm.com>
 <20190501161330.GD30235@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190501161330.GD30235@redhat.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, May 01, 2019 at 06:13:30PM +0200, Oleg Nesterov wrote:
> On 04/30, Sudeep Holla wrote:
> >
> > While the TIF_SYSCALL_EMU is set in ptrace_resume independent of any
> > architecture, currently only powerpc and x86 unset the TIF_SYSCALL_EMU
> > flag in ptrace_disable which gets called from ptrace_detach.
> >
> > Let's move the clearing of TIF_SYSCALL_EMU flag to __ptrace_unlink
> > which gets executed from ptrace_detach and also keep it along with
> > or close to clearing of TIF_SYSCALL_TRACE.
> >
> > Cc: Oleg Nesterov <oleg@redhat.com>
> > Cc: Paul Mackerras <paulus@samba.org>
> > Cc: Michael Ellerman <mpe@ellerman.id.au>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> 
> Acked-by: Oleg Nesterov <oleg@redhat.com>
>

Since 1/4 and 2/4 are completely independent of arm64 changes in 3&4/4,
I prefer you take these via your tree.

--
Regards,
Sudeep