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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - devbind no longer works unless VFIO_UNSAFE is enabled"
href="https://bugs.dpdk.org/show_bug.cgi?id=1596">1596</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>devbind no longer works unless VFIO_UNSAFE is enabled
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>24.11
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
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<th>Priority</th>
<td>Normal
</td>
</tr>
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<th>Component</th>
<td>core
</td>
</tr>
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<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>stephen@networkplumber.org
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">Debian (and probably lots of other distributions), do not enable unsafe VFIO
option (CONFIG_VFIO_NOIOMMU). If that is true, then the module parameter does
not exist.
This causes DPDK devbind to fail:
Error: failed to check unsafe noiommu mode - Cannot open
/sys/module/vfio/parameters/enable_unsafe_noiommu_mode: [Errno 2] No such file
or directory: '/sys/module/vfio/parameters/enable_unsafe_noiommu_mode'
This regression is caused by the commit.
commit 6ca0f1c8450d6e28926cad33c6500ad487f4cfdb
Author: Fidaullah Noonari <<a href="mailto:fidaullah.noonari@emumba.com">fidaullah.noonari@emumba.com</a>>
Date: Wed Oct 2 11:13:12 2024 -0700
usertools/devbind: support VFIO non-IOMMU mode
This patch adds noiommu option to dpdk-devbind.
If the no IOMMU is detected, then if noiommu flag is set
the vfio-pci unsafe_noiommu_mode flag is set.
Signed-off-by: Fidaullah Noonari <<a href="mailto:fidaullah.noonari@emumba.com">fidaullah.noonari@emumba.com</a>>
Signed-off-by: Stephen Hemminger <<a href="mailto:stephen@networkplumber.org">stephen@networkplumber.org</a>>
Acked-by: Bruce Richardson <<a href="mailto:bruce.richardson@intel.com">bruce.richardson@intel.com</a>>
</pre>
</div>
</p>
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