Date: Thu, 7 Sep 2017 11:05:17 -0700 From: Peter Grehan <grehan@freebsd.org> To: Farhan Khan <khanzf@gmail.com> Cc: freebsd-virtualization@freebsd.org Subject: Re: bhyve passthrough fails Message-ID: <5e672671-22d6-3569-ea2b-a8105b8e3334@freebsd.org> In-Reply-To: <CAFd4kYDKdrQjHb8qUMdVZkQ4eD3RDhhN_-JPY2CjAvm5HcYOkA@mail.gmail.com> References: <CAFd4kYA0CfACyGmtXhcG_vPiiW65rXgUedhKRWW8vU8sxOdVrw@mail.gmail.com> <c4e7de73-f1f4-4a1d-e742-44b62d702928@freebsd.org> <CAFd4kYDKdrQjHb8qUMdVZkQ4eD3RDhhN_-JPY2CjAvm5HcYOkA@mail.gmail.com>
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> I would not mind sending you on-going feedback or debugging information > if it helps.> > Could it be a chipset issue? This is a lower-end laptop. It can do > virtualization, but the passthrough issue seemed to fail. I was on > FreeBSD 11.1. It may be due to this (and also my issue which was on AMD, may be due to a reboot where I didn't enable the iommu). If that is the case, the error handling could certainly be improved :( You can check to see if there is an IOMMU available by looking for the APCI DMAR table: acpidump -t | grep DMAR later, Peter.
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