Hi Junaid, On Tue, Sep 25, 2018 at 01:11:06AM -0700, Junaid Shahid wrote: > On 09/24/2018 12:57 PM, Sakari Ailus wrote: > > > > I'm not subscribed to the kvm list nor I did find the original e-mail with > > the headers so I constructed the reply from the bits I did find. If > > something goes wrong it's probably because of that. > > > > This patch in the host kernel breaks KVM guests on Core 2 Duo (T9500). KVM > > guests do not boot on plain v4.18.9 (which contains the patch) host; > > reverting this patch fixes it. > > Hi Sakari, > > Could you please let me know what OS is running in the guest? Also, is > there some kernel panic etc. in the guest OS when it doesn't boot, or > does it fail in some other way? The guest is Debian running v4.18.9 kernel. Everything simply stops once I'd expect the kernel to start executing the initrd scripts. Before figuring out the host kernel was at fault, I was first wondering if there was something wrong with the guest itself and disabled a few things such as APIC or HPET, and different oopses followed from that. If there's no immediate, obvious fix, I'd strongly suggest to revert the patch. -- Regards, Sakari Ailus e-mail: sakari.ailus@xxxxxx
