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Subject: Re: [patch] tls-2.5.31-D4
From: Luca Barbieri <ldb@ldb.ods.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@transmeta.com>,
       Linux-Kernel ML <linux-kernel@vger.kernel.org>,
       Alexandre Julliard <julliard@winehq.com>
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> the ability to change the default CS and DS segments
> as well.
This does not make any sense.
The user is free to load any selector in %cs/%ds/%es/%ss so the default
flat segments should be left alone so that a process can have the flat
segments _plus_ all the tls entries.

> although i suspect Wine needs a 16-bit entry, while
> the APM one is a 32-bit entry ...
AFAIK this only matters for code and stack segments and anyway the APM
one should be a 16-bit entry since it exists because the BIOS wrongly
assumes that it is a real-mode segment.

Anyway, isn't it better to put the user segments in a cacheline that
doesn't already lose one entry to the null selector? (and leave the
first one either empty or for BIOS/boot selectors)


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