From: Manfred Spraul <manfred@colorfullife.com>
To: Arjan van de Ven <arjan@fenrus.demon.nl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: -mmX 4G patches feedback [numbers: how much performance impact]
Date: Tue, 06 Apr 2004 19:59:10 +0200 [thread overview]
Message-ID: <4072EFEE.6050907@colorfullife.com> (raw)
Arjan wrote:
>afaics all Intel and AMD cpus with more than say 32 or 64 TLB's are
>actually 64 bit capable.... so obviously you run a 64 bit kernel there.
>(and amd64 even has that sweet CAM filter on the tlbs to mitigate the
>effect even if you run a 32 bit kernel)
>
Does AMD document how the CAM filter actually works? x86-64 writes into
the 4th level page table during a context switch and if I understand the
patent description correctly, this defeates the flush filter and forces
a full flush during a context switch.
--
Manfred
next reply other threads:[~2004-04-06 17:59 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-06 17:59 Manfred Spraul [this message]
2004-04-06 18:41 ` -mmX 4G patches feedback [numbers: how much performance impact] Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2004-04-05 16:36 -mmX 4G patches feedback Eric Whiting
2004-04-05 17:46 ` Andrea Arcangeli
2004-04-05 21:35 ` Eric Whiting
2004-04-05 22:16 ` Andrea Arcangeli
2004-04-06 11:55 ` -mmX 4G patches feedback [numbers: how much performance impact] Ingo Molnar
2004-04-06 14:49 ` Eric Whiting
2004-04-06 15:59 ` Andrea Arcangeli
2004-04-06 16:13 ` Arjan van de Ven
2004-04-06 16:39 ` Andrea Arcangeli
2004-04-06 17:24 ` Ingo Molnar
2004-04-06 17:57 ` Andrea Arcangeli
2004-04-07 22:54 ` Martin J. Bligh
2004-04-07 22:50 ` Andrea Arcangeli
2004-04-06 19:25 ` Ingo Molnar
2004-04-06 20:25 ` Andrea Arcangeli
2004-04-07 6:03 ` Andrea Arcangeli
2004-04-07 6:46 ` Ingo Molnar
2004-04-07 7:23 ` Andrea Arcangeli
2004-04-07 8:23 ` Ingo Molnar
2004-04-07 21:35 ` Andrea Arcangeli
2004-04-07 17:27 ` Andrea Arcangeli
2004-04-07 7:25 ` Ingo Molnar
2004-04-07 21:39 ` Andrea Arcangeli
2004-04-07 22:58 ` Martin J. Bligh
2004-04-07 23:01 ` Andrea Arcangeli
2004-04-07 23:21 ` Martin J. Bligh
2004-04-07 23:18 ` Andrea Arcangeli
2004-04-07 23:34 ` Martin J. Bligh
2004-04-08 0:18 ` Andrea Arcangeli
2004-04-08 6:24 ` Martin J. Bligh
2004-04-08 21:59 ` Andrea Arcangeli
2004-04-08 22:19 ` Martin J. Bligh
2004-04-08 22:19 ` Andrea Arcangeli
2004-04-08 23:14 ` Martin J. Bligh
2004-04-08 23:22 ` Andrea Arcangeli
2004-04-08 23:42 ` Martin J. Bligh
2004-04-08 23:49 ` Andrea Arcangeli
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4072EFEE.6050907@colorfullife.com \
--to=manfred@colorfullife.com \
--cc=arjan@fenrus.demon.nl \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.