Date: Sat, 10 Aug 1996 20:37:38 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: Re: kern_mib.c:int securelevel = -1; Message-ID: <199608101837.UAA02327@uriah.heep.sax.de> In-Reply-To: <199608101631.CAA03169@godzilla.zeta.org.au> from Bruce Evans at "Aug 11, 96 02:31:19 am"
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As Bruce Evans wrote: > >...and make it a default option. Otherwise, people with typical > >workstations running Xservers will jump at us. The comment in LINT > >and GENERIC _must_ mention this, or the amount of support replies we > >have to send out will increase drastically. > > Have you tried it? :-) X works fine even at securelevel 2. I haven't tried it, but i think at doesn't work if you've got a graphics device where the Xserver wants to access the linear framebuffer via /dev/mem. At least, i remember vaguely the term ``NetBSD aperture driver'' and the stated reason that this was intended to be a backdoor in order to circumvent the /dev/mem problem. Plain (banked) VGA probably works, since it only needs to mmap() the standard frame buffer where syscons or pcvt do already know about its location. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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