Bug Hunter wrote:

>     Thanks! That was it.  I had read the man pages, and "Linux device
> drivers" (OReilley) and could find no documentation regarding the value
> to feed to iopl() other than the iopl(2) that was mentioned in the man
> page for iob.
> 
>     Is there a good treatise for this somewhere?

I don't know if it's mentioned in The Linux Kernel or The Kernel
Hacker's Guide. I just found that increasing the iopl to 3 cured the
segv.

> Also about the entire glibc stuff?

What about glibc? There is reasonable documention in the info file,
although when it comes to system calls (particularly multi-purpose
calls such as ioctl), the behaviour depends upon the underlying OS.

-- 
Glynn Clements <[EMAIL PROTECTED]>

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