On Mon, Jul 01, 2019 at 02:23:58PM +0200, Sebastian Andrzej Siewior wrote: > On 2019-07-01 00:04:15 [-0400], Joel Fernandes (Google) wrote: > > This reverts commit a6fda6dab93c2c06ef4b8cb4b9258df6674d2438 which > > causes kvm.sh to not run on my machines. The qemu-system-x86_64 command > > runs but does nothing. > > Nope. I would like to know *why* you need 'noapic' to work. Is it a > brand new or old qemu-system-x86_64? I did not have time to debug yesterday and I posted this particular revert as an 'RFC' just to make aware of this problem. I spent some more time just now, it looks like this has nothing to do with 'noapic' and appears to be a problem on debian distros with the e1000e NIC. May be this NIC was added to the virtual hardware because of -machine in the patch? Any if I add the following to the qemu command that kvm.sh runs, it works again: -net nic,model=e1000 Without it I get: qemu-system-x86_64: Initialization of device e1000e failed: failed to find romfile "efi-e1000e.rom" Seems to be mentioned here: https://bugs.launchpad.net/ubuntu/+source/ipxe/+bug/1737211 And in syzkaller as well: https://github.com/google/syzkaller/blob/master/vm/qemu/qemu.go#L88 Adding Dmitry who is syzkaller owner for any thoughts as well. I'm happy to write a patch to set the nic model as e1000 and send it out if we agree this solution is good enough. - Joel
