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Date:   Mon, 18 Mar 2019 18:29:11 +0100
From:   Oleg Nesterov <oleg@redhat.com>
To:     Sudeep Holla <sudeep.holla@arm.com>
Cc:     x86@kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
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        Steve Capper <Steve.Capper@arm.com>,
        Haibo Xu <haibo.xu@arm.com>, Bin Lu <bin.lu@arm.com>,
        Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to
 core
Message-ID: <20190318172911.GC23521@redhat.com>
References: <20190318104925.16600-1-sudeep.holla@arm.com>
 <20190318104925.16600-2-sudeep.holla@arm.com>
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On 03/18, Sudeep Holla wrote:
>
 @@ -534,6 +534,10 @@ static int ptrace_detach(struct task_struct *child, unsigned int data)
>  	/* Architecture-specific hardware disable .. */
>  	ptrace_disable(child);
>  
> +#ifdef TIF_SYSCALL_EMU
> +	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif

perhaps it makes sense to factor out clear_tsk_thread_flag(TIF_SYSCALL_EMU), but
then we should probably clear it along with TIF_SYSCALL_TRACE in __ptrace_unlink?

Oleg.