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<div class="moz-cite-prefix">On 11/07/2017 06:51 AM, Alex Williamson
wrote:<br>
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cite="mid:CAEMbtc+ckrfPPkV3Bkp0qwrFOSdnFjzE2Y7sGNaqBk29SREUFQ@mail.gmail.com">
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<div class="gmail_quote">On Mon, Nov 6, 2017 at 11:58 PM,
Steve Freitas <span dir="ltr"><<a
href="mailto:sflist@ihonk.com" target="_blank"
moz-do-not-send="true">sflist@ihonk.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">On 11/06/2017 07:01 PM, Marcial Ascencio wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi guys, i was planning to buy USB card with at least
2 usb ports to assign each one to each VM, so I'm
asking some advice about a brand that works soft with
Linux VFIO. Thank you so much in advance!<br>
</blockquote>
<br>
</span>
Hi Marcial,<br>
<br>
The Sonnet Allegro Pro worked great for me: <a
href="https://amazon.com/Sonnet-Allegro-Pro-PCIe-card/dp/B00XPUHO10/"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://amazon.com/Sonnet-Alle<wbr>gro-Pro-PCIe-card/dp/B00XPUHO1<wbr>0/</a><br>
<br>
I pass three of the four controllers through to different
VMs, no ACS override necessary on my machine. VM reboots
work without an issue. An earlier post on this mailing
list indicated problems with this card with VM reboots,
but that seems to have been resolved in more recent
kernels. My host runs Ubuntu 17.04, kernel 4.10.<br>
</blockquote>
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<div>Does the PCIe switch actually support ACS on the
downstream ports for this card? I've seen some reports
that certain switch configurations are incorrectly
allowing separate iommu groups where they shouldn't. Fair
warning, we're probably going to need to fix that and
break some configurations that were incorrectly grouped.
Thanks,</div>
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<br>
Yer breakin' my heart! :-)<br>
<br>
Good question, how do I check that?<br>
<br>
Steve<br>
<br>
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