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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - nouveau: NV4E acceleration corruption when DMA above 31-bit (2 Gig barrier)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=46557#c27">Comment # 27</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - nouveau: NV4E acceleration corruption when DMA above 31-bit (2 Gig barrier)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=46557">bug 46557</a>
from <span class="vcard"><a class="email" href="mailto:gibboris@gmail.com" title="Raphaël Droz <gibboris@gmail.com>"> <span class="fn">Raphaël Droz</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=70841" name="attach_70841" title="nouveau CALL_SUBR_ACTIVE errors using dma_bits=32 kernel on NV34">attachment 70841</a> <a href="attachment.cgi?id=70841&action=edit" title="nouveau CALL_SUBR_ACTIVE errors using dma_bits=32 kernel on NV34">[details]</a></span>
nouveau CALL_SUBR_ACTIVE errors using dma_bits=32 kernel on NV34
I tried your suggestion about setting dma_bits to 32 inside
drivers/gpu/drm/nouveau/core/subdev/vm/nv44.c.
but sadly the same issue arises (dmesg attached).
I hope I'm still wise to post those traces (from my NV34) in this bug report
and hope the root cause is common.
I currently use the drm kernel module with debug=2, debug=3 dumps too much
output, but let me know if this can provide additional useful info.</pre>
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