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            <b><a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - Display chunks with xorg intel driver with Accel & when using swap space"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90725#c12">Comment # 12</a>
              on <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - Display chunks with xorg intel driver with Accel & when using swap space"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90725">bug 90725</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>Ok, I think the swizzle detection here is bogus...

kernel:
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c
b/drivers/gpu/drm/i915/i915_gem_tiling.c
index af23a5a7b870..b90eb4812c6b 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -215,8 +215,8 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev)
                 * the minimum size of a rank.
                 */
                if (I915_READ16(C0DRB3) != I915_READ16(C1DRB3)) {
-                       swizzle_x = I915_BIT_6_SWIZZLE_NONE;
-                       swizzle_y = I915_BIT_6_SWIZZLE_NONE;
+                       swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN;
+                       swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
                } else {
                        swizzle_x = I915_BIT_6_SWIZZLE_9_10;
                        swizzle_y = I915_BIT_6_SWIZZLE_9;

Danvet, do you still have the source for the magic ddc2 bit? By any chance do
you also have the desktop variant of the spec?</pre>
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