From: Andi Kleen <ak@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andi Kleen <ak@suse.de>, Andrea Arcangeli <andrea@suse.de>,
Doug Ledford <dledford@redhat.com>,
jh@suse.cz, linux-kernel@vger.kernel.org, jakub@redhat.com,
aj@suse.de, pavel@atrey.karlin.mff.cuni.cz
Subject: Re: SSE related security hole
Date: Thu, 18 Apr 2002 13:46:57 +0200 [thread overview]
Message-ID: <20020418134657.B26709@wotan.suse.de> (raw)
In-Reply-To: <20020418131431.B22558@wotan.suse.de> <E16yATQ-0004V1-00@the-village.bc.nu>
On Thu, Apr 18, 2002 at 12:53:12PM +0100, Alan Cox wrote:
> > > Intel folks are actually saying even back in Pentium MMX days that it isnt
> > > guaranteed that the FP/MMX state are not seperate registers
> >
> > In this case it would be possible to only do the explicit clear
> > when the CPU does support sse1. For mmx only it shouldn't be needed.
> > For sse2 also not.
>
> Do you have a documentation cite for that claim ?
Never mind. It was a bogus suggestion and fninit indeed also doesn't clear
XMM on P4 and other SSE2 implementation.
-Andi
next prev parent reply other threads:[~2002-04-18 11:47 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-17 23:42 SSE related security hole Doug Ledford
2002-04-18 5:26 ` Andrea Arcangeli
2002-04-18 9:10 ` Arjan van de Ven
2002-04-18 11:18 ` Alan Cox
2002-04-18 11:14 ` Andi Kleen
2002-04-18 11:53 ` Alan Cox
2002-04-18 11:46 ` Andi Kleen [this message]
2002-04-18 11:55 ` Andi Kleen
2002-04-18 13:44 ` Doug Ledford
2002-04-18 19:20 ` Pavel Machek
2002-04-18 19:32 ` Doug Ledford
2002-04-21 19:54 ` Pavel Machek
2002-04-18 8:22 ` Andi Kleen
2002-04-18 14:02 ` [OT: nostalgia] " Matthias Andree
-- strict thread matches above, loose matches on Subject: below --
2002-04-22 22:24 Saxena, Sunil
[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 22:18 ` Jan Hubicka
[not found] <200204182320.53095.nahshon@actcom.co.il>
2002-04-19 11:22 ` Alan Cox
2002-04-18 18:36 linux
2002-04-18 18:53 ` Richard B. Johnson
2002-04-21 19:52 ` Pavel Machek
2002-04-21 22:11 ` David Wagner
2002-04-18 21:06 ` H. Peter Anvin
2002-04-17 14:51 Jan Hubicka
2002-04-17 15:23 ` Jan Hubicka
2002-04-18 14:57 ` Denis Vlasenko
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