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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#c49">Comment # 49</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>(In reply to Marek Olšák from <a href="show_bug.cgi?id=93649#c48">comment #48</a>)
<span class="quote">> Does this fix the hangs?
> <a href="https://cgit.freedesktop.org/mesa/mesa/commit/">https://cgit.freedesktop.org/mesa/mesa/commit/</a>
> ?id=d4d9ec55c589156df4edc227a86b4a8c41048d58
>
> 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.</span >
Actually, I think that commit only affects Hawaii and Fiji. Other GPUs might be
unaffected, which means the Tahiti hangs are due to a different bug.</pre>
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