Re: [patch] x86: fix ESP corruption CPU bug

[linux-os]

On Mon, 14 Mar 2005, Jakob Eriksson wrote:

> Andi Kleen wrote:
>
> > Stas Sergeev <stsp@xxxxxxxx> writes:
> >
> > > > Another way of saying the same thing: I absolutely hate seeing
> > > > patches that fix some theoretical issue that no Linux apps will ever
> > > > care about.
> > > No, it is not theoretical, but it is mainly
> > > about a DOS games and an MS linker, as for
> > > me. The things I'd like to get working, but
> > > the ones you may not care too much about:)
> > > The particular game I want to get working,
> > > is "Master of Orion 2" for DOS.
> >
> > How about you just run it in dosbox instead of dosemu ?
>
> Yes, that's a solution of course, but it is a bit like saying why
> not use Open Office instead of MS Word.
>
> A long term goal of wine is to support DOS apps to. Of course
> it's not a priority, but it's there.
>
> regards,
> Jakob

Can you tell me how the invisible high-word (invisible in VM-86, and
in real mode) could possibly harm something running in VM-86 or
read-mode ???  I don't even think it's a BUG. If the transition
into and out of VM-86 doesn't handle the fact that the high-word
of the stack hasn't been used in VM-86, then that piece of code
is bad (the SP isn't even the same stack, BTW).


Cheers,
Dick Johnson
Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
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