From: Rudolf Marek <r.marek@assembler.cz>
To: Mikael Pettersson <mikpe@it.uu.se>
Cc: Jean Delvare <khali@linux-fr.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexey Dobriyan <adobriyan@openvz.org>,
Dave Jones <davej@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] MSR: Add support for safe variants
Date: Wed, 28 Mar 2007 23:04:50 +0200 [thread overview]
Message-ID: <460AD872.6020609@assembler.cz> (raw)
In-Reply-To: <20070326140911.877430f5.khali@linux-fr.org>
Hello Mikael,
> Maybe I'm in the minority here, but I for one strongly believe
> that any attempt to access an MSR "which might not be there" is
> inherently wrong. It implies that your HW detection is incomplete,
> which in combination with MSR accesses means that you may end up
> accessing MSRs that aren't at all what you think they should be.
Well I have some info from Intel, but the register is simply not always there.
So instead of oopsing kernel, handling the exception is much better.
For further details please check:
http://softwarecommunity.intel.com/isn/Community/en-US/forums/thread/30229027.aspx
(last page) I may have more info in the future.
> Who supplies these imprecise MSR definitions anyway?
Yes Intel, please check the thread. Sometimes similar to catch 22 ;)
Rudolf
next prev parent reply other threads:[~2007-03-28 21:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-26 11:57 [PATCH 1/2] MSR: Add support for safe variants Mikael Pettersson
2007-03-26 12:09 ` Jean Delvare
2007-03-28 21:04 ` Rudolf Marek [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-03-25 12:18 Jean Delvare
2007-03-25 22:22 ` Andrew Morton
2007-03-26 11:29 ` Jean Delvare
2007-03-26 11:55 ` Andrew Morton
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=460AD872.6020609@assembler.cz \
--to=r.marek@assembler.cz \
--cc=adobriyan@openvz.org \
--cc=akpm@linux-foundation.org \
--cc=davej@redhat.com \
--cc=khali@linux-fr.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mikpe@it.uu.se \
/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.