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Subject: Re: Bhyve passthrough problems
To: Mario Lobo <lobo@bsd.com.br>
References: <20180117202250.6ef90c6d@Papi.lobos>
Cc: freebsd-virtualization@freebsd.org
From: Peter Grehan <grehan@freebsd.org>
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Date: Thu, 18 Jan 2018 00:58:08 -0800
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Hi Mario,

> I'm trying to passthrough a firewire pci card to a windows 7 64 guest.

  First, you'll need to verify if that card supports MSI or MSI-x since 
that is required by bhyve for passthru support. This can be seen with 
'pciconf -lbc' on the FreeBSD host.

> VM exits with:
> 
> Assertion failed: (mr->name == memp->name), function
> unregister_mem, file /usr/src/usr.sbin/bhyve/mem.c, line 265.
> Abort trap

  This is bug in bhyve when running Windows with PCI devices that have 
more than 1 memory BAR (e.g. Intel igb ethernet devices), due to the 
order that Windows determines BAR sizes. I've been meaning to fix this 
for a long time so will try and get to it.

later,

Peter.