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Date: Tue, 10 May 2016 20:20:55 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>,
        Ruslan Kabatsayev <b7.10110111@gmail.com>, X86 ML <x86@kernel.org>,
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        Borislav Petkov <bp@alien8.de>, Pavel Emelyanov <xemul@parallels.com>,
        Cyrill Gorcunov <gorcunov@openvz.org>
Subject: Re: Getting rid of dynamic TASK_SIZE (on x86, at least)
Message-ID: <20160510182055.GA24868@redhat.com>
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On 05/10, Andy Lutomirski wrote:
>
>  - xol_add_vma: This one is weird: uprobes really is doing something
> behind the task's back, and the addresses need to be consistent with
> the address width.  I'm not quite sure what to do here.

It can use mm->task_size instead, plus this is just a hint. And perhaps
mm->task_size should have more users, say get_unmapped_area...

Not sure we should really get rid of dynamic TASK_SIZE completely, but
personally I agree it looks a bit ugly.

Oleg.