RE: [Linux-ia64] mprotect problem

["Hoeflinger, Jay P" <jay.p.hoeflinger@intel.com>]

I don't know how to do this.  I'm not a kernel hacker and I've
never rebuilt the kernel.

Is there any way I can view this with a debugger or anything else?

Jay

-----Original Message-----
From: David Mosberger [mailto:davidm@hpl.hp.com]
Sent: Friday, December 07, 2001 10:10 AM
To: Hoeflinger, Jay P
Cc: 'Boehm, Hans'; 'n0ano@indstorage.com'; MOSBERGER, DAVID
(HP-PaloAlto,unix3); 'linux-ia64@linuxia64.org'
Subject: RE: [Linux-ia64] mprotect problem


>>>>> On Fri, 7 Dec 2001 06:53:14 -0800 , "Hoeflinger, Jay P"
<jay.p.hoeflinger@intel.com> said:

  Jay> No, we haven't checked that this is not a page size or
  Jay> alignment issue.  The page size we get from getpagesize().

Can you find out *why* the later page faults occur?  Printing the ISR
should help.  The page fault handler does not (yet) setup si_isr in
the siginfo, but you could just hack
arch/ia64/mm/fault.c:ia64_do_page_fault() to print the ISR when you
detect the problematic case.

If you have a (small) test program that replicates the problem, I'd be
happy to look into it early next week.

	--david