tree c2f4e98d1c12211564b54cfdfcf02ff2c6e532c2
parent 0290cf3f9f77b7d31691b21cfe505e4804aa4bbb
author Imre Deak <imre.deak@intel.com> 1494408112 +0300
committer Imre Deak <imre.deak@intel.com> 1494413273 +0300

drm/i915: Sanitize stolen memory size calculation

On GEN8+ (not counting CHV) the calculation can in theory result in an
incorrect sign extension with all upper bits set. In practice this is
unlikely to happen since it would require 4GB of stolen memory set
aside. For consistency still prevent the sign extension explicitly
everywhere.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1494408113-379-6-git-send-email-imre.deak@intel.com