From: Simon Jeons <simon.jeons@gmail.com>
To: Jerome Glisse <j.glisse@gmail.com>
Cc: Shachar Raindel <raindel@mellanox.com>,
lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org,
Andrea Arcangeli <aarcange@redhat.com>,
Roland Dreier <roland@purestorage.com>,
Haggai Eran <haggaie@mellanox.com>,
Or Gerlitz <ogerlitz@mellanox.com>,
Sagi Grimberg <sagig@mellanox.com>,
Liran Liss <liranl@mellanox.com>
Subject: Re: [LSF/MM TOPIC] Hardware initiated paging of user process pages, hardware access to the CPU page tables of user processes
Date: Wed, 17 Apr 2013 07:50:41 +0800 [thread overview]
Message-ID: <516DE3D1.7030800@gmail.com> (raw)
In-Reply-To: <CAH3drwbx1aiQEA19+zq6t=GPPNZQEkD27sCjL-Ma2aYns7pMXw@mail.gmail.com>
On 04/17/2013 12:27 AM, Jerome Glisse wrote:
[snip]
>
>
> As i said this is for pre-filling already present entry, ie pte that
> are present with a valid page (no special bit set). This is an
> optimization so that the GPU can pre-fill its tlb without having to
> take any mmap_sem. Hope is that in most common case this will be
> enough, but in some case you will have to go through the lengthy non
> fast gup.
I know this. What I concern is the pte you mentioned is for normal cpu,
correct? How can you pre-fill pte and tlb of GPU?
>
> Cheers,
> Jerome
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next prev parent reply other threads:[~2013-04-16 23:50 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-08 11:18 [LSF/MM TOPIC] Hardware initiated paging of user process pages, hardware access to the CPU page tables of user processes Shachar Raindel
2013-02-08 15:21 ` Jerome Glisse
2013-04-16 7:03 ` Simon Jeons
2013-04-16 16:27 ` Jerome Glisse
2013-04-16 23:50 ` Simon Jeons [this message]
2013-04-17 14:01 ` Jerome Glisse
2013-04-17 23:48 ` Simon Jeons
2013-04-18 1:02 ` Jerome Glisse
2013-02-09 6:05 ` Michel Lespinasse
2013-02-09 16:29 ` Jerome Glisse
2013-04-09 8:28 ` Simon Jeons
2013-04-09 14:21 ` Jerome Glisse
2013-04-10 1:41 ` Simon Jeons
2013-04-10 20:45 ` Jerome Glisse
2013-04-11 3:42 ` Simon Jeons
2013-04-11 18:38 ` Jerome Glisse
2013-04-12 1:54 ` Simon Jeons
2013-04-12 2:11 ` [Lsf-pc] " Rik van Riel
2013-04-12 2:57 ` Jerome Glisse
2013-04-12 5:44 ` Simon Jeons
2013-04-12 13:32 ` Jerome Glisse
2013-04-10 1:57 ` Simon Jeons
2013-04-10 20:55 ` Jerome Glisse
2013-04-11 3:37 ` Simon Jeons
2013-04-11 18:48 ` Jerome Glisse
2013-04-12 3:13 ` Simon Jeons
2013-04-12 3:21 ` Jerome Glisse
2013-04-15 8:39 ` Simon Jeons
2013-04-15 15:38 ` Jerome Glisse
2013-04-16 4:20 ` Simon Jeons
2013-04-16 16:19 ` Jerome Glisse
2013-02-10 7:54 ` Shachar Raindel
2013-04-09 8:17 ` Simon Jeons
2013-04-10 1:48 ` Simon Jeons
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