Messages in this thread | | | Date | Mon, 12 Aug 2002 17:20:01 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: [patch] tls-2.5.31-C3 |
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On 12 Aug 2002, Alan Cox wrote:
> Which does mean you can steal the old TLS value and put it back across > the calls just by changing the TLS data for that process. [...]
yes - the 0x40 segment can be saved & restored safely. We have per-CPU GDTs so nobody can modify them while the APM BIOS is executing. (assuming preemption is disabled.)
> [...] For that matter on Windows emulation I thought Windows also needed > 0x40 to be the same offset as the BIOS does so can't we leave it > hardwired ?
another thing: do we want this with descriptor priviledge level 3? Because the APM 0x40 GDT entry was a ring 0 descriptor, but that would not be accessible to Wine or DOSEMU.
Ingo
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