Subject: Re: mmap'ing framebuffer memory in MI drivers...
To: None <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 03/06/1999 09:34:28
On Sat, 6 Mar 1999 07:49:26 -0800 (PST)
"Eduardo E. Horvath" <email@example.com> wrote:
> And it immediately calls pmap_enter() if the mapping would succeed. There
> is no instance I can find where if the d_mmap() routine is called and
> returns a success, pmap_enter is not immediately called. I see no other
> calls just to check for permissions.
That's the FAULT handler you're looking at.
Now, take a look udv_attach().
> That would also work. Probably good to have it called for unmapping
> (pmap_remove()) so the driver (and bus_space*()) can free up any resources
> they may have needed to allocate for the mapping.
No, not pmap_remove(), but rather when the device is munmap'd (this is
a different operation).
-- Jason R. Thorpe <firstname.lastname@example.org>