From: "H. Peter Anvin" <hpa@zytor.com>
To: Jan Beulich <JBeulich@novell.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: patch disabling use of PSE on Atom CPUs with a certain erratum
Date: Thu, 07 Oct 2010 06:46:11 -0700 [thread overview]
Message-ID: <4CADCF23.5070800@zytor.com> (raw)
In-Reply-To: <4CADAB3A020000780001B30A@vpn.id2.novell.com>
On 10/07/2010 02:12 AM, Jan Beulich wrote:
> In commit 7a0fc404ae663776e96db43879a0fa24fec1fa3a you
> disable use of PSE, but I wonder how this can take any effect on
> 64-bit CPUs, as they use large pages during early boot already.
> Those pages, when use of PSE gets disabled, will get broken up
> into 4k pages in phys_pmd_init(), thus actually increasing the
> chances that you hit the erratum.
>
> What am I missing?
>
Those Atoms don't have 64-bit support.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2010-10-07 13:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-07 9:12 patch disabling use of PSE on Atom CPUs with a certain erratum Jan Beulich
2010-10-07 13:46 ` H. Peter Anvin [this message]
2010-10-07 14:01 ` Jan Beulich
2010-10-07 14:08 ` H. Peter Anvin
2010-10-07 14:52 ` Jan Beulich
2010-10-07 15:10 ` H. Peter Anvin
2010-10-07 15:29 ` Jan Beulich
2010-10-07 15:32 ` H. Peter Anvin
2010-10-18 23:23 ` Yuhong Bao
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=4CADCF23.5070800@zytor.com \
--to=hpa@zytor.com \
--cc=JBeulich@novell.com \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox