From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 10 Oct 1999 20:21:15 -0400 (EDT) From: James Simmons Subject: Re: MMIO regions In-Reply-To: <14336.53971.896012.84699@light.alephnull.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Rik Faith Cc: "Eric W. Biederman" , Linux MM List-ID: > No. The DRI assumes that direct-rendering clients are running as non-root > users. A direct-rendering client, with an open connection to the X server, > is allowed to mmap the MMIO region via a special device (additional > restrictions also apply). For more information, please see "A Security > Analysis of the Direct Rendering Infrastructure" > (http://precisioninsight.com/dr/security.html). > Just to clarify, the DRI does _not_ require that clients be SUID. Oh my. Non root and direct access to buggy hardware. Yeah since your familar with SGI can you explain to me the use of /dev/shmiq, /dev/qcntl and /dev/usemaclone. I have seen them used for the X server on IRIX and was just interested to see if they could be of use on other platforms. Yes SGI linux supports these. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://humbolt.geo.uu.nl/Linux-MM/