drm/i915: Don't clobber the GTT when it's within stolen memory

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On most gen2-4 platforms the GTT can be (or maybe always is?)
inside the stolen memory region. If that's the case, reduce the
size of the stolen memory appropriately to make make sure we
don't clobber the GTT.

v2: Deal with gen4 36 bit physical address

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80151
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Ville Syrjälä 2014-06-05 20:02:59 +03:00 • committed by Daniel Vetter

parent aceb365ca9

commit f1e1c2129b

2 changed files with 47 additions and 0 deletions

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44

drivers/gpu/drm/i915/i915_gem_stolen.c

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3

drivers/gpu/drm/i915/i915_reg.h

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