Subject: Re: COMPAT_LINUX vsyscall
To: Christos Zoulas <firstname.lastname@example.org>
From: David Laight <email@example.com>
Date: 05/01/2005 20:24:46
On Sun, May 01, 2005 at 12:21:42PM -0400, Christos Zoulas wrote:
> In article <1gvvpbx.qbr351ckyzb3Mfirstname.lastname@example.org>,
> Emmanuel Dreyfus <email@example.com> wrote:
> >Working on COMPAT_LINUX, I discovered a new Linux feature (kernel
> >18.104.22.168) called the vsyscall page. This is similar to Darwin's
> >commpage: a page of functions mapped by the kernel in userspace:
> No, this wheel is all yours :-) And while you are spinning it, it would
> be nice to have this facility or similar in NetBSD.
Sounds like SVR2 shared library support.....
Or, IIRC, the shared code that RSX/11M used to have!
Why would you want to map a page of code into userspace?
David Laight: firstname.lastname@example.org