From: Chris Wilson <chris@chris-wilson.co.uk>
To: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>,
airlied@linux.ie, "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 1/1] Use cachable mapping for i915 opregion.
Date: Sun, 23 Jan 2011 17:41:03 +0000 [thread overview]
Message-ID: <b7da2f$q7cls6@fmsmga001.fm.intel.com> (raw)
In-Reply-To: <1295803414-5373-1-git-send-email-kernel@mkarcher.dialup.fu-berlin.de>
On Sun, 23 Jan 2011 18:23:34 +0100, Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de> wrote:
> The opregion is a shared memory region between ACPI and the graphics
> driver. As the ACPI mapping has been changed to cachable in commit
> 6d5bbf00d251cc73223a71422d69e069dc2e0b8d, mapping the intel opregion
> non-cachable now fails. As no bus-master hardware is involved in the
> opregion, cachable map should do no harm.
Presumably these instances in the driver also need to be
acpi_os_ioremap()?
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
next prev parent reply other threads:[~2011-01-23 17:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-23 17:23 [PATCH 1/1] Use cachable mapping for i915 opregion Michael Karcher
2011-01-23 17:41 ` Chris Wilson [this message]
2011-01-23 18:45 ` Chris Wilson
2011-01-23 20:52 ` Rafael J. Wysocki
2011-01-23 20:52 ` Rafael J. Wysocki
2011-01-23 20:58 ` Chris Wilson
2011-01-23 21:35 ` Rafael J. Wysocki
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