On 05/11/13 09:43, Hilton Day wrote: > Hi - firstly a warning. While I've been running Xen on Linux for about 6 > years, I've only just started to scratch the surface of freeBSD. > > I just compiled a (working) paravirt kernel for freeBSD 8.3 (actually for > pfSense firewall), and have succeeded in running it with a couple of > virtual interfaces. However, I've struck a couple of limitations: > > 1. Seems to be no support for the Xen pcifront to enable pci passthrough > to paravirt domUs?
No, there's no pcifrontend, so right now it's not possible to use i386 PV guests with pci-passthrough. > 2. SMP support seems to be broken - I get a kernel panic with more than > one core for the VM. Yes, it's broken. > I've had a look and can't find anything like the Linux kernel option > for CONFIG_XEN_PCIDEV_FRONTEND > to enable pci support in paravirt? (but this could be lack of familiarity > with freeBSD build process/tree/files). > > I've succeessfully passed thorugh the same NIC to freeBSD Xen HVM domUs > (running 8.3 and 9.1), but would prefer to get a fully paravirt instance up > and running. > > Is PCI Passthrough possible with a freeBSD paravirt domU? I just set up a > freeBSD 10 BETA2 environment and have kicked off the build process with: > >> make buildkernel KERNCONF=XEN > > I'm just wondering whether I'm chasing a dead end and should just settle > for a XEN HVM solution? There have been a lot of improvements recently (that apply to both HEAD and stable-10) in order to get PVHVM working, which has a performance similar to pure PV (or even better depending on the workload). Also, i386 PV is currently broken on both HEAD and stable-10 AFAIK, so I would recommend switching to PVHVM instead. Roger. _______________________________________________ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
