Re: verify_area()

Matthew S. Crocker (
8 Dec 1996 08:57:17 GMT

Russell Berry ( wrote:

: I haven't sifted through the verify_area() code well enough to claim a
: complete understanding of its function. But I'm assuming here that its
: dissappearance means that the new kernel's hard coded kernel/user space
: boundaries are now controlling the late call's functionality. Am I off
: track here??

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.


-Matthew S Crocker               "The mask, given time, comes
Crocker Communications            to be the face itself."  -anonymous
Internet Division		Phone (413) 585-5164
PO BOX 710			Fax   (413) 587-3352
Greenfield, MA 01302-0710	Email