diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-07-08 09:22:46 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-08-01 19:58:57 -0700 |
| commit | d1d6ca73ef548748e141747e7260798327d6a2c1 (patch) | |
| tree | 0a69cbfb66f2b30d707f24861baf3399d77c350b /drivers/gpu/drm | |
| parent | cda4b7d3a5b1dcbc0d8e7bad52134347798e9047 (diff) | |
| download | blackbird-obmc-linux-d1d6ca73ef548748e141747e7260798327d6a2c1.tar.gz blackbird-obmc-linux-d1d6ca73ef548748e141747e7260798327d6a2c1.zip | |
drm/agp/i915: trim stolen space to 32M
Some BIOSes will claim a large chunk of stolen space. Unless we
reclaim it, our aperture for remapping buffer objects will be
constrained. So clamp the stolen space to 32M and ignore the rest.
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15469 among others.
Adding the ignored stolen memory back into the general pool using the
memory hotplug code is left as an exercise for the reader.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Simon Farnsworth <simon.farnsworth@onelan.com>
Tested-by: Artem S. Tashkinov <t.artem@mailcity.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 14054c051e40..f19ffe87af3c 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -41,6 +41,8 @@ #include <linux/vga_switcheroo.h> #include <linux/slab.h> +extern int intel_max_stolen; /* from AGP driver */ + /** * Sets up the hardware status page for devices that need a physical address * in the register. @@ -2106,6 +2108,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (ret) goto out_iomapfree; + if (prealloc_size > intel_max_stolen) { + DRM_INFO("detected %dM stolen memory, trimming to %dM\n", + prealloc_size >> 20, intel_max_stolen >> 20); + prealloc_size = intel_max_stolen; + } + dev_priv->wq = create_singlethread_workqueue("i915"); if (dev_priv->wq == NULL) { DRM_ERROR("Failed to create our workqueue.\n"); |
