From owner-freebsd-current Thu Nov 4 18:43:48 1999 Delivered-To: freebsd-current@freebsd.org Received: from rah.star-gate.com (216-200-29-190.snj0.flashcom.net [216.200.29.194]) by hub.freebsd.org (Postfix) with ESMTP id 540B715826 for ; Thu, 4 Nov 1999 18:43:44 -0800 (PST) (envelope-from hasty@rah.star-gate.com) Received: from rah.star-gate.com (localhost.star-gate.com [127.0.0.1]) by rah.star-gate.com (8.9.3/8.8.8) with ESMTP id SAA50513; Thu, 4 Nov 1999 18:41:55 -0800 (PST) (envelope-from hasty@rah.star-gate.com) Message-Id: <199911050241.SAA50513@rah.star-gate.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Mike Smith Cc: yokota@zodiac.mech.utsunomiya-u.ac.jp (Kazutaka YOKOTA), current@FreeBSD.ORG Subject: Re: vga driver and signal In-reply-to: Your message of "Thu, 04 Nov 1999 18:23:52 PST." <199911050223.SAA00620@dingo.cdrom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 04 Nov 1999 18:41:55 -0800 From: Amancio Hasty Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > What will happen if the X server was running with real time priorities which > > syncing up with a vertical retrace seems to imply? > > The only real way to do this "right" is going to be to have the X > server load a KLD, which will then be able to hook the relevant > interrupt(s). Any other alternative involves interrupt delivery to > user-space, which is just not practical. > Hi Mike, Your idea sounds intriguing . How should we wired the KLD to the X server? or how will the KLD inform the X server that it has received a vertical retrace interrupt . -- Amancio Hasty hasty@rah.star-gate.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message