[coyotos-dev] syscall/sysret vs. small spaces
Jonathan S. Shapiro
shap at eros-os.org
Wed Nov 9 13:39:58 EST 2005
On Wed, 2005-11-09 at 17:21 +0000, David Hopwood wrote:
> Why can't the SYSEXIT trampoline be within the small space's cs segment
> (on a read-only page, of course)?
Mainly because SYSEXIT does not correctly reload the small space CS
segment base value.
> [I am not sure that using SYSEXIT/SYSRET for small spaces is a good idea
> anyway; just trying to make sure all the design options are explored.]
The prevailing opinion here this week is that it *is* worth it, but I'm
not entirely convinced yet.
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