Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268153AbUIPQfP (ORCPT ); Thu, 16 Sep 2004 12:35:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268229AbUIPQfH (ORCPT ); Thu, 16 Sep 2004 12:35:07 -0400 Received: from voicebook.com ([128.121.231.235]:34321 "EHLO voicebook.com") by vger.kernel.org with ESMTP id S268180AbUIPQ3z (ORCPT ); Thu, 16 Sep 2004 12:29:55 -0400 Subject: Re: device driver for the SGI system clock, mmtimer From: Marcello Barnaba Reply-To: marcello@softmedia.info To: Jesse Barnes Cc: Bjorn Helgaas , Christoph Lameter , linux-kernel@vger.kernel.org, Bob Picco , venkatesh.pallipadi@intel.com In-Reply-To: <200409160909.12840.jbarnes@engr.sgi.com> References: <200409161003.39258.bjorn.helgaas@hp.com> <200409160909.12840.jbarnes@engr.sgi.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-dLWZTAsN1hceH+GbTo80" Organization: Softmedia S.c.r.l. Message-Id: <1095352174.1659.2.camel@nowhere.openssl.softmedia.lan> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Thu, 16 Sep 2004 18:29:34 +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1625 Lines: 48 --=-dLWZTAsN1hceH+GbTo80 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2004-09-16 at 18:09, Jesse Barnes wrote: > I think Christoph already looked at that. And HPET doesn't provide mmap=20 > functionality, does it? I.e. allow a userspace program to dereference th= e=20 > counter register directly? drivers/char/Kconfig: config HPET_MMAP bool "Allow mmap of HPET" default y depends on HPET help=20 If you say Y here, user applications will be able to mmap the HPET registers. In some hardware implementations, the page containing HPET registers may also contain other things that shouldn't be exposed to the user. If this applies to your hardware, say N here. --=20 Marcello Barnaba - SoftMedia S.c.r.l. :: Mobile: +39 (340) 3698342 Via Mauro Amoruso, 11 - 70124 Bari :: Phone: +39 (080) 5046314 pub 1024D/F04476A2 :: 6807 EEA5 7F97 AC9A D8EF AE73 64CD 71A2 F044 76A2 --=-dLWZTAsN1hceH+GbTo80 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) iD8DBQBBSb9ukn504uXeT8sRArnqAJ9R+1abAb0PL4jgnCvkTAtOZvoPCgCfZK++ Fr1PFHoBXSKUm4ZH6hiIJc4= =zYi8 -----END PGP SIGNATURE----- --=-dLWZTAsN1hceH+GbTo80-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/