From: Kasper Dupont <kasperd@daimi.au.dk>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: root@chaos.analogic.com, stas.orel@mailcity.com,
linux-kernel@vger.kernel.org
Subject: Re: [patch] vm86: Clear AC on INT
Date: Thu, 01 Aug 2002 18:21:45 +0200 [thread overview]
Message-ID: <3D496019.88237C6@daimi.au.dk> (raw)
In-Reply-To: 1028222900.14871.77.camel@irongate.swansea.linux.org.uk
Alan Cox wrote:
>
> On Thu, 2002-08-01 at 16:55, Kasper Dupont wrote:
> > This would be similar to the use of the use of the VIF flag to
> > emulate the IF flag. This flag has actually got me wondering:
> > AFAIR the flag is mentioned in Intel specs, but it looks like
> > in Linux the flag is implemented 100% in software with no help
> > from the CPU. Is that correct, or did I miss something?
>
> The kernel itself doesn't use the alignment flags but some applications
> do. For example some language systems use alignment traps for
> typechecking by adding a type code (0-3) to the address and
> dereferencing it
Ehrm, that wasn't my point. My point was that if the feature exist
in virtual 86 mode but not in real mode, the kernel should prevent
it from being used in virtual 86 mode because it is supposed to
emulate real mode.
--
Kasper Dupont -- der bruger for meget tid på usenet.
For sending spam use mailto:razrep@daimi.au.dk
or mailto:mcxumhvenwblvtl@skrammel.yaboo.dk
next prev parent reply other threads:[~2002-08-01 16:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-28 16:21 [patch] vm86: Clear AC on INT Stas Sergeev
2002-08-01 12:19 ` Kasper Dupont
2002-08-01 13:43 ` Kasper Dupont
2002-08-01 15:15 ` Richard B. Johnson
2002-08-01 15:49 ` Kasper Dupont
2002-08-01 16:52 ` Alan Cox
2002-08-01 15:55 ` Kasper Dupont
2002-08-01 17:28 ` Alan Cox
2002-08-01 16:21 ` Kasper Dupont [this message]
2002-08-01 16:40 ` Maciej W. Rozycki
2002-08-01 17:04 ` Kasper Dupont
2002-08-01 17:38 ` Richard B. Johnson
2002-08-01 17:48 ` Kasper Dupont
2002-08-01 17:47 ` Alan Cox
2002-08-01 16:33 ` Maciej W. Rozycki
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