[Bug 109930] I915_PARAM_HAS_ALIASING_PPGTT return value is changed with patch "drm/i915: Remove i915.enable_ppgtt override"

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Mar 8 12:07:51 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=109930

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
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 :|

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