On 2/26/2020 6:12 PM, Sean Christopherson wrote: > On Tue, Feb 25, 2020 at 01:49:13PM -0800, Jacob Keller wrote: > > One other thing that's been bothering me; you mention in a later email that > this bug resulting in a crash during boot. The low timestamps also suggest > the system is fairly early in its bringup. > > But KVM only does VMXON when it actually creates a VM[*]. During boot I > would expect the bug to result in KVM being incorrectly loaded/enabled, but > that alone wouldn't trigger a crash. It crashes during hardware enable, specifically in the kvm_cpu_vmxon during the hardware_enable() function. It doesn't crash until near the end of bootup, and it didn't crash when I kept the system in single-user boot mode. > > I assume/hope your system is automatically running some form of virt > process at boot? Not that there's anything wrong with that, it's just > suprising and I want to make sure there's not something really funky going > on. > The system has libvirtd enabled. My guess is that libvirtd starts up and enables hardware. I don't see any actual virtual machines enabled, but I think you're right that this is why it crashes. Thanks, Jake
