From: Marcello Barnaba <marcello@softmedia.info>
To: Jesse Barnes <jbarnes@engr.sgi.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>,
Christoph Lameter <clameter@sgi.com>,
linux-kernel@vger.kernel.org, Bob Picco <Robert.Picco@hp.com>,
venkatesh.pallipadi@intel.com
Subject: Re: device driver for the SGI system clock, mmtimer
Date: Thu, 16 Sep 2004 18:29:34 +0200 [thread overview]
Message-ID: <1095352174.1659.2.camel@nowhere.openssl.softmedia.lan> (raw)
In-Reply-To: <200409160909.12840.jbarnes@engr.sgi.com>
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On Thu, 2004-09-16 at 18:09, Jesse Barnes wrote:
> I think Christoph already looked at that. And HPET doesn't provide mmap
> functionality, does it? I.e. allow a userspace program to dereference the
> counter register directly?
drivers/char/Kconfig:
config HPET_MMAP
bool "Allow mmap of HPET"
default y
depends on HPET
help
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.
--
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
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next prev parent reply other threads:[~2004-09-16 16:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-16 16:03 Bjorn Helgaas
2004-09-16 16:09 ` Jesse Barnes
2004-09-16 15:52 ` Alan Cox
2004-09-16 17:07 ` Jesse Barnes
2004-09-16 18:17 ` Robert Picco
2004-09-16 18:23 ` Jesse Barnes
2004-09-16 18:00 ` Robert Picco
2004-09-16 16:29 ` Marcello Barnaba [this message]
2004-09-16 16:30 ` Christoph Lameter
2004-09-16 18:14 ` Vojtech Pavlik
2004-09-16 18:35 ` Jesse Barnes
2004-09-16 20:34 ` Vojtech Pavlik
2004-09-16 18:46 ` Christoph Lameter
2004-09-20 21:53 ` Bjorn Helgaas
2004-09-16 16:32 ` Christoph Lameter
2004-09-16 16:54 ` Bjorn Helgaas
2004-09-16 18:07 ` Robert Picco
2004-09-16 20:05 ` Christoph Lameter
2004-09-17 1:34 ` Robert Picco
2004-09-16 18:17 ` Vojtech Pavlik
[not found] <Pine.LNX.4.58.0409082058140.28678@schroedinger.engr.sgi.com>
[not found] ` <20040908210537.585120c1.akpm@osdl.org>
2004-09-09 5:12 ` Christoph Lameter
2004-09-09 6:43 ` Jesse Barnes
2004-09-10 19:54 ` Christoph Lameter
2004-09-11 10:50 ` Christoph Hellwig
2004-09-11 15:32 ` Christoph Lameter
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