On Wed, Oct 16, 2019 at 11:28:23AM +0200, Roger Pau Monné wrote: > On Wed, Oct 16, 2019 at 12:17:20PM +0300, Stefan Parvu wrote: > > > > > > Your box doesn't seem to have an iommu (aka vt-d for Intel). > > > > In BIOS I do have VT-D Enabled option. Would that be broken or not working ? > > Are you sure it's VT-d and not VT-x what you have enabled in the BIOS? > > Looking at the details of your CPU: > > https://ark.intel.com/content/www/us/en/ark/products/41447/intel-core-i7-930-processor-8m-cache-2-80-ghz-4-80-gt-s-intel-qpi.html > > VT-d is not listed in 'Advanced Technologies'. For example looking at > a newer model: > > https://ark.intel.com/content/www/us/en/ark/products/149091/intel-core-i7-8565u-processor-8m-cache-up-to-4-60-ghz.html > > You can see VT-d listed in 'Advanced Technologies'. Nehalems do have VT-d, but they have dedicated chip with north bridge still, CPU only provided memory controller. So VT-d is the feature of the chipset, e.g. X58, not mentioning Xeon chipsets. On the other hand, VT-d support was relatively buggy, could it be that Xen kernel refuses to use it due to the problems ?
> > > I think I have used Xen a bit older version on Debian some time back if Im > > not wrong, on the same hdw. > > See below. > > > >> But you need all boot log. I will try your option tonight. I cant access > > >> the hardware now. > > > > > > If you can that would be helpful, but AFAIK this box is simply not > > > capable of running a Xen PVH dom0 (which is the only mode FreeBSD > > > supports in order to work as dom0). Either it has a broken iommu or no > > > iommu at all. > > > > Hmmm. Thats strange since I do recall I had previously used here Xen but on > > Linux. But older > > version. Could it be something changed regarding Xen and iommu or ? > > Linux dom0 would likely be in PV mode (note the missing H), which > doesn't require an iommu. OTOH FreeBSD only supports PVH dom0, which > does require an iommu. > > Roger. > _______________________________________________ > [email protected] mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "[email protected]"
