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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [radeonsi] Graphics lockup while playing tf2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93649#c48">Comment # 48</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [radeonsi] Graphics lockup while playing tf2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93649">bug 93649</a>
from <span class="vcard"><a class="email" href="mailto:maraeo@gmail.com" title="Marek Olšák <maraeo@gmail.com>"> <span class="fn">Marek Olšák</span></a>
</span></b>
<pre>Does this fix the hangs?
<a href="https://cgit.freedesktop.org/mesa/mesa/commit/?id=d4d9ec55c589156df4edc227a86b4a8c41048d58">https://cgit.freedesktop.org/mesa/mesa/commit/?id=d4d9ec55c589156df4edc227a86b4a8c41048d58</a>
It changes the HTILE (HyperZ) allocation function to
r600_aligned_buffer_create. Without that, the hardware can hang on big GPUs
(Tahiti/Pitcairn/Hawaii/Tonga/etc), but not APUs or small GPUs. The hang
happens when TTM decides to move HTILE to a different location with an
unaligned physical address (which is pretty random). The hardware tries to
access the unaligned address and boom.</pre>
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