Re: qemu/kvm tianocore restart stuck

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 4/22/21 10:04 PM, VoidCC wrote:
> Hello,
> 
> I'm hitting a hard wall with qemu and efi.
> I'm running multiple windows server 2019 vms which usually reboot on
> updates.
> 
> The issue is, efi breaks on reboot.
> It randomly(race condition?, does not occur consistently) ends up in a
> blackscreen: no bootloader, no efi screen and the only way to get out of
> that state is to destroy the vm.
> moving the host mouse cursor above the console in virt-manager results
> in a flashing mouse cursor.
> there are no physical devices attached and there is currently no virtio
> attachment in use (os has virtio drivers installed)
> 
> 
> Machine is Q35 with tianocore/ovmf efi.
> I managed to reproduce the same behaviour on rhel 8.3 as well as
> voidlinux (kernel 5.11)
> 
> gdb output of qemu is showing nothing worrisome, else ive compiled ovmf
> manually for debug output.
> libvirt logs don't show any issues.
> 
> root · Slexy.org Pastebin <https://slexy.org/view/s2w8CdNBx5>

I tried to help you yesterday on IRC mentioning SMM / EPT
but then you didn't reply. See:
https://bugzilla.redhat.com/show_bug.cgi?id=1348092#c24

Regards,

Phil.