Ingo Molnar wrote:
> On Tue, 24 Dec 2002, Linus Torvalds wrote:
>
>
>>I realized that there is really no reason to use __KERNEL_DS for this,
>>and that as far as the kernel is concerned, the only thing that matters
>>is that it's a flat 32-bit segment. So we might as well make the kernel
>>always load ES/DS with __USER_DS instead, which has the advantage that
>>we can avoid one set of segment loads for the "sysenter/sysexit" case.
>
>
> this basically hardcodes flat segment layout on x86. If anything (Wine?)
> modifies the default segments, it can wrap syscalls by saving/restoring
> the modified %ds and %es selectors explicitly.
>
I don't think you can modify the GDT segments.
-hpa
P.S. Please don't use my @transmeta.com address for non-Transmeta
business. I'm trying very hard to keep my mailboxes semi-organized.
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This archive was generated by hypermail 2b29 : Tue Dec 31 2002 - 22:00:11 EST