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>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
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)
Date: Tue, 10 May 2016 20:20:55 +0200 [thread overview]
Message-ID: <20160510182055.GA24868@redhat.com> (raw)
In-Reply-To: <CALCETrWWZy0hngPU8MCiQvnH+s0awpFE8wNBrYsf_c+nz6ZsDg@mail.gmail.com>
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.
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WARNING: multiple messages have this Message-ID (diff)
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>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
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)
Date: Tue, 10 May 2016 20:20:55 +0200 [thread overview]
Message-ID: <20160510182055.GA24868@redhat.com> (raw)
In-Reply-To: <CALCETrWWZy0hngPU8MCiQvnH+s0awpFE8wNBrYsf_c+nz6ZsDg@mail.gmail.com>
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.
next prev parent reply other threads:[~2016-05-10 18:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-10 16:07 Getting rid of dynamic TASK_SIZE (on x86, at least) Andy Lutomirski
2016-05-10 16:07 ` Andy Lutomirski
2016-05-10 16:30 ` Cyrill Gorcunov
2016-05-10 16:30 ` Cyrill Gorcunov
2016-05-10 16:45 ` Andy Lutomirski
2016-05-10 16:45 ` Andy Lutomirski
2016-05-10 17:05 ` Cyrill Gorcunov
2016-05-10 17:05 ` Cyrill Gorcunov
2016-05-10 17:26 ` Andy Lutomirski
2016-05-10 17:26 ` Andy Lutomirski
2016-05-10 17:49 ` Cyrill Gorcunov
2016-05-10 17:49 ` Cyrill Gorcunov
2016-05-10 21:11 ` Andy Lutomirski
2016-05-10 21:11 ` Andy Lutomirski
2016-05-11 5:59 ` Cyrill Gorcunov
2016-05-11 5:59 ` Cyrill Gorcunov
2016-05-10 18:20 ` Oleg Nesterov [this message]
2016-05-10 18:20 ` Oleg Nesterov
2016-05-10 20:29 ` Andy Lutomirski
2016-05-10 20:29 ` Andy Lutomirski
2016-05-11 18:08 ` Oleg Nesterov
2016-05-11 18:08 ` Oleg Nesterov
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