Subject: Re: map user memory in kernel
To: Jaromir Dolecek <jdolecek@NetBSD.org>
From: David Laight <email@example.com>
Date: 11/07/2005 07:46:04
On Sun, Nov 06, 2005 at 11:52:48PM +0100, Jaromir Dolecek wrote:
> On Sun, Nov 06, 2005 at 01:52:16PM -0800, Chuck Silvers wrote:
> > On Sun, Nov 06, 2005 at 09:49:31PM +0100, Jaromir Dolecek wrote:
> > > > the logical page can be paged out and replaced with a different
> > > > physical page when it's paged backed in, so we cannot use the
> > > > vm_page pointer for this purpose.
> > >
> > > Could we use vm_map_entry ?
> > how? could you be more specific?
> I mean, use address of appropriate vm_map_entry as the futex wait
> channel base. However, that is process-specific too, sorry for the
> noise :)
> Okay, back to anon:
Does it have to be anon?
What about mmap() ?
Or even part of the code segment.
David Laight: firstname.lastname@example.org