Subject: Re: mmap'ing framebuffer memory in MI drivers...
To: None <>
From: Jason Thorpe <>
List: tech-kern
Date: 03/06/1999 09:40:39
On Sat, 06 Mar 1999 09:34:28 -0800 
 Jason Thorpe <> wrote:

 > BZZT :-)
 > That's the FAULT handler you're looking at.
 > Now, take a look udv_attach().


I blame this on the fact that I haven't finished my first cup of coffee.

The Mach VM code definitely called d_mmap at mmap time, to check every
possibly page in the mapping, to ensure that the fault handler would never

UVM apparently doesn't do this.  I personally would prefer that UVM did
the check at mmap time.

Chuck, is there a reason you didn't implement that?

        -- Jason R. Thorpe <>