Date: Thu, 23 Oct 2025 22:00:42 -0400 (EDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: freebsd-virtualization@FreeBSD.org Subject: bhyve command-line option order Message-ID: <385a62cf-22ad-c1ed-13fe-1ac8c7ab1408@FreeBSD.org>
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I wrote a change to vm-bhyve[1] to be able to pass the options to bhyve in the correct order to use GPU passthru. In the incorrect order, bhyve will return an error. The question was raised: Is it expected that bhyve will return an error depending upon the order of command-line arguments, or should it be handling this scenario? The issue is when "-s 31, lpc" is presented to bhyve. If it is passed prior to "-o pci.0.31.0.pcireg.vendor=host", then there is no error. However, if it is in the opposite order, this is returned: $ bhyve ... -o pci.0.31.0.pcireg.vendor=host -s 31,lpc ... pci slot 0:31:0 already occupied! I will be updating my PR to make things a bit easier regardless of the answer, but it would be nice to know if this is intended or not. Thank you. Sean 1. https://github.com/freebsd/vm-bhyve/pull/56 -- scf@FreeBSD.org
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