Re: verify_area()

Systemkennung Linux (
Sun, 8 Dec 1996 16:49:33 +0100 (MET)

> I believe it is all handled by the MMU with exceptions. I also
> remember reading about a really slick execption handling routine
> somebody patched into ther kernel. It is supposed to make tha normal
> (non-error) calls work much faster and handle the abnormal (error)
> calls better.

I assume you're talking about the exception handling enhancements
based on a idea of Ingo Molinar and implemented for Alpha/i386 by
Richard Henderson. That version penalizes the error case even more
and eleminates the overhead for the normal case almost completly.