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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - skylake: page fault accessing address 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101283#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - skylake: page fault accessing address 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101283">bug 101283</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>As for a), the comments in i965 are a bit better:
/* Emit a PIPE_CONTROL with "Post-Sync Operation" set to "Write Immediate
* Data", and no other bits set. This causes 3DSTATE_WM_HZ_OP's state to
* take effect, and spawns a rectangle primitive.
*/
3DSTATE_WM_HZ_OP is kind of weird - it overrides all the state, and sets up a
rectangle primitive that's about ready to fire...but it needs a flush to
actually push it over the edge and make it happen. No idea why they designed
it this way.
b) It's absolutely a problem - that code is definitely broken. Good catch!</pre>
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