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<body><span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - Performance regression with various games in drm-next-amd-staging Kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103100">bug 103100</a>
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<td>ckoenig.leichtzumerken@gmail.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Performance regression with various games in drm-next-amd-staging Kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103100#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Performance regression with various games in drm-next-amd-staging Kernel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103100">bug 103100</a>
from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
<pre>One possible issue with per-VM BOs is that the kernel driver can no longer
migrate BOs to more optimal placement for a command stream, because it doesn't
know which BOs are used by the command stream. So if e.g. a per-VM BO is
evicted from VRAM, e.g. due to CPU access to it, it will normally never move
back to VRAM.
Christian, might it be possible to e.g. maintain a list of per-VM BOs which
were evicted from VRAM, and try to move them back to VRAM as part of the
existing mechanism for this (for "normal" BOs)?</pre>
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