Date: Sun, 2 Apr 2017 09:11:41 -0700 (PDT) From: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> To: Anish <akgupt3@gmail.com> Cc: Daniel Tihanyi <tetragir@fastmail.fm>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Assigning PCI ethernet interfaces to VMs in bhyve Message-ID: <201704021611.v32GBf3t031973@pdx.rh.CN85.dnsmgr.net> In-Reply-To: <CALnRwMReG7RqiGCKTP8sU%2BV_iDbEss=67mug1AQVWOqx0a2EVw@mail.gmail.com>
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> Hi Daniel, > For Intel cards only condition is that in the VM, these devices should > start at function 0 because of PCI enumeration, always starts at function > 0. If you want to assign multiple ports to VM, it can be function 0 and any > other function, for example: > > Host PCI dev 4/0/1 and 4/0/2 are to be assigned to guest at virtual PCI > slot 10, assignment can be: > 4/0/1 -> 10/0 > 4/0/2 -> 10/1 > > > Regards, > Anish > > On Sun, Apr 2, 2017 at 3:09 AM, Daniel Tihanyi <tetragir@fastmail.fm> wrote: > > > Hello, > > > > I have a FreeBSD host running VMs on bhyve. I already have a few PCI-X > > ethernet cards assigned to each of them, but only with one ethernet > > interface. I would like to purchase a few PCI-X Ethernet cards with 4 > > interfaces. My question is if it is possible to assign the individual > > interfaces on the card to different VMs? On the bhyve Wiki, there is an > > example for this, but it is assigning the interfaces into the same VM, > > although to different slots. I am planning to use Intel cards for this > > of course. Has anyone experience in this? > > Thank you very much in advance! > > > > Daniel Tihanyi I think what he wants to do though is assign 1 each of the 4 PCI devs to seperate VM's as in First VM: 4/0/1 Second VM: 4/0/2 Third VM; 4/0/3 Forth VM: 4/0/4 I do not know if this well or well not work. It might work if the 4 devices appear behind a bridge chip and are not subdevs but are actual full devies of there own as in: first vm: 4/0/1 second vm: 5/0/1 third vm: 6/0/1 forth vm: 7/0/1 I have hardware of this later type I could test with, though it is PCI, and 10/100, so may present other issues (BAR size/alignment.) -- Rod Grimes rgrimes@freebsd.orghelp
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