From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <ak@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Bugs aren't features: X86_FEATURE_FXSAVE_LEAK
Date: Fri, 05 May 2006 11:18:09 -0700 [thread overview]
Message-ID: <445B96E1.3080401@zytor.com> (raw)
In-Reply-To: <p733bfo5ol1.fsf@bragg.suse.de>
Andi Kleen wrote:
> "H. Peter Anvin" <hpa@zytor.com> writes:
>
>> The recent fix for the AMD FXSAVE information leak had a problematic
>> side effect. It introduced an entry in the x86 features vector which
>> is a bug, not a feature.
>
> It's a non issue because it affects all AMD CPUs (except K5/K6).
> You'll never find a system where only some CPUs have this problem.
>
It's still wrong architecturally, and we should have a sane way to deal with this as well
as other bugs. This isn't the only bug -- we're getting a decent-size collection of them
already -- and not all of them is going to have that particular property.
-hpa
next prev parent reply other threads:[~2006-05-05 18:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-05 16:36 Bugs aren't features: X86_FEATURE_FXSAVE_LEAK H. Peter Anvin
2006-05-05 18:11 ` Andi Kleen
2006-05-05 18:18 ` H. Peter Anvin [this message]
2006-05-05 18:27 ` Andi Kleen
2006-05-06 4:16 ` Christer Weinigel
2006-05-09 14:38 ` Bill Davidsen
[not found] <69bvw-2zO-5@gated-at.bofh.it>
[not found] ` <69d4M-4Yx-19@gated-at.bofh.it>
[not found] ` <69mqY-1Ci-9@gated-at.bofh.it>
2006-05-06 17:37 ` Robert Hancock
2006-05-08 17:47 ` H. Peter Anvin
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=445B96E1.3080401@zytor.com \
--to=hpa@zytor.com \
--cc=ak@suse.de \
--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.