Anup Patil wrote: > Hi, > > Creating a HVM guest for netbsd 3.1 on snv_101b with the command: > virt-install -n nbsd31 --hvm -r 512 --vnc \ > -f /export/home/admin/domains/nbsd31.img -s 10 \ > --cdrom /export/home/admin/domains/i386cd-3.1.iso \ > --no-graphics
I've done some tests with NetBSD 5.0_BETA as a HVM domain. There are some issues: * NetBSD after 3.x patches some kernel functions to contain more optimal code for the architecture. That's nothing particularly special (Solaris does that too), but it uses the WP bit in cr0 to disable write protection while doing it. Xen doesn't like that, and it fails. I have a patch for that which I'll get into the NetBSD tree. * With slightly older qemu versions, NetBSD hangs during the floppy probe. You might have to use boot -c and "disable fdc0" to get around that. * There's a problem with Xen 3.1.x not correctly emulating repeated I/O instructions when the repeat count is 0. Not a problem for most operating systems, but it can happen under NetBSD. * Lastly, there seems to be some other issue, causing bad pagefaults during install. Again, this is specific to NetBSD (and possibly the other BSDs), but not triggered at all by Windows, Solaris or Linux HVM domains. I tried it under Xen 3.3, and the problem went away; I successfully installed both 32 and 64bit NetBSD 5.0 HVM domains. If you want to run NetBSD under xVM, for now I'd suggest using a PV NetBSD kernel (NetBSD 5.0_BETA is probably the best option here). - Frank _______________________________________________ xen-discuss mailing list xen-discuss@opensolaris.org
