From: Matthew Garrett <mjg@redhat.com>
To: Keith Packard <keithp@keithp.com>
Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: By default, enable RC6 on IVB and SNB when reasonable
Date: Tue, 22 Nov 2011 20:15:31 +0000 [thread overview]
Message-ID: <20111122201531.GD5547@srcf.ucam.org> (raw)
In-Reply-To: <1321684889-18691-1-git-send-email-keithp@keithp.com>
On Fri, Nov 18, 2011 at 10:41:29PM -0800, Keith Packard wrote:
> + /*
> + * Only enable RC6 if all dma remapping is disabled, or if
> + * there's no iommu present in the machine.
> + */
> + if (INTEL_INFO(dev)->gen == 6)
> + return no_iommu || dmar_disabled;
So the user has to choose between 5W of power saving or having dmar? And
we default to giving them dmar? I think that's going to come as a
surprise to people.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2011-11-22 20:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-19 6:41 [PATCH] drm/i915: By default, enable RC6 on IVB and SNB when reasonable Keith Packard
2011-11-19 7:37 ` [Intel-gfx] " Kenneth Graunke
2011-11-19 9:25 ` Eugeni Dodonov
2011-11-19 18:32 ` Keith Packard
2011-11-20 21:19 ` Eugeni Dodonov
2011-11-22 20:15 ` Matthew Garrett [this message]
[not found] ` <CAC7Lmnts+QwZ2XTvbTQa=aa3XO5_Sna0vk3KHWJJ6oi6+D5BXw@mail.gmail.com>
2011-11-22 20:51 ` Matthew Garrett
2011-11-23 3:31 ` Keith Packard
2011-11-23 10:26 ` Daniel Vetter
2011-11-23 14:01 ` David Woodhouse
2011-11-23 14:39 ` Daniel Vetter
2011-11-23 15:03 ` David Woodhouse
2011-11-23 15:31 ` Daniel Vetter
2011-11-23 15:36 ` David Woodhouse
2011-11-23 15:46 ` Daniel Vetter
2011-11-23 15:41 ` Daniel Vetter
2011-11-23 15:43 ` David Woodhouse
2011-11-23 20:35 ` Daniel Vetter
2011-11-23 18:42 ` [PATCH] iommu: export no_iommu and dmar_disabled symbols Eugeni Dodonov
2011-11-23 20:36 ` [Intel-gfx] " David Woodhouse
2011-11-23 20:48 ` Keith Packard
[not found] ` <1322526298-2746-1-git-send-email-eugeni.dodonov@intel.com>
2011-12-09 23:53 ` drm/i915: Enabling RC6 where possible Keith Packard
2011-12-09 23:53 ` [PATCH 1/2] iommu: Export intel_iommu_enabled to signal when iommu is in use Keith Packard
2011-12-09 23:53 ` [PATCH 2/2] drm/i915: By default, enable RC6 on IVB and SNB when reasonable Keith Packard
2011-12-13 3:45 ` Matthew Garrett
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