From: "H. Peter Anvin" <hpa@zytor.com>
To: <torvalds@transmeta.com>
Cc: <hpa@zytor.com>, <bgerst@didntduck.org>, <andrea@suse.de>,
<ak@suse.de>, <linux-kernel@vger.kernel.org>, <jh@suse.cz>
Subject: Re: [PATCH] Re: SSE related security hole
Date: Fri, 19 Apr 2002 17:19:01 -0700 (PDT) [thread overview]
Message-ID: <3604.131.107.184.74.1019261941.squirrel@www.zytor.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0204191708360.6542-100000@home.transmeta.com>
>
>
> On Fri, 19 Apr 2002, H. Peter Anvin wrote:
>>
>> Indeed. Logically, FNINIT should have been extended to initialize it
>> all - - it is a security hole that it doesn't initialize MMX properly.
>
> Well, MMX should arguably be initialized with "emms", so the proper
> sequence migth be something like
>
Remember that one of the original design goals of MMX was to run on
unmodified operating systems (and it can't be turned off); thus needing
any extra initialization is a bug.
-hpa
next prev parent reply other threads:[~2002-04-20 0:19 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20020418183639.20946.qmail@science.horizon.com.suse.lists.linux.kernel>
[not found] ` <a9ncgs$2s2$1@cesium.transmeta.com.suse.lists.linux.kernel>
2002-04-19 14:06 ` Andi Kleen
2002-04-19 18:00 ` Doug Ledford
2002-04-19 21:04 ` Andrea Arcangeli
2002-04-19 21:35 ` H. Peter Anvin
2002-04-19 21:42 ` Andi Kleen
2002-04-20 3:23 ` Andrea Arcangeli
2002-04-19 23:12 ` [PATCH] " Brian Gerst
2002-04-19 23:41 ` Linus Torvalds
2002-04-20 0:01 ` H. Peter Anvin
2002-04-20 0:09 ` Linus Torvalds
2002-04-20 0:11 ` Brian Gerst
2002-04-20 0:19 ` H. Peter Anvin [this message]
2002-04-20 0:29 ` Linus Torvalds
2002-04-20 0:31 ` Alan Cox
2002-04-20 0:08 ` Brian Gerst
2002-04-20 0:21 ` Linus Torvalds
2002-04-20 4:21 ` Andrea Arcangeli
2002-04-20 4:35 ` Linus Torvalds
2002-04-20 5:07 ` Andrea Arcangeli
2002-04-20 16:27 ` Linus Torvalds
2002-04-20 17:27 ` Andrea Arcangeli
2002-04-20 17:38 ` Linus Torvalds
2002-04-20 18:12 ` Andrea Arcangeli
2002-04-20 19:30 ` Linus Torvalds
2002-04-20 19:41 ` Andi Kleen
2002-04-20 21:28 ` Andrea Arcangeli
2002-04-20 22:43 ` H. Peter Anvin
2002-04-21 2:09 ` Andrea Arcangeli
2002-04-20 23:23 ` Linus Torvalds
2002-04-21 2:08 ` Andrea Arcangeli
2002-04-20 23:13 ` Linus Torvalds
2002-04-23 19:21 ` Linus Torvalds
2002-04-23 20:05 ` H. Peter Anvin
2002-04-24 0:32 ` Andrea Arcangeli
2002-04-24 2:10 ` Linus Torvalds
2002-04-26 9:13 ` Pavel Machek
2002-04-26 11:55 ` Andrea Arcangeli
2002-04-19 22:18 ` Jan Hubicka
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