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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - I915_PARAM_HAS_ALIASING_PPGTT return value is changed with patch "drm/i915: Remove i915.enable_ppgtt override""
href="https://bugs.freedesktop.org/show_bug.cgi?id=109930#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - I915_PARAM_HAS_ALIASING_PPGTT return value is changed with patch "drm/i915: Remove i915.enable_ppgtt override""
href="https://bugs.freedesktop.org/show_bug.cgi?id=109930">bug 109930</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>The bug in question is:
if (bufmgr_gem->gen >= 8) {
gp.param = I915_PARAM_HAS_ALIASING_PPGTT;
ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
if (ret == 0 && *gp.value == 3)
bufmgr_gem->bufmgr.bo_use_48b_address_range =
drm_intel_gem_bo_use_48b_address_range;
which can not work going forward :|</pre>
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