Comment # 16 on bug 1202727 from Petr Tesa������������k

So, to recap what I have tested:

z/VM, boot by kexec: WORKS
QEMU accel=kvm, direct boot: WORKS
QEMU accel=kvm, boot by kexec: WORKS
QEMU accel=kvm, boot by grub-emu: WORKS
QEMU, accel=tcg, direct boot: WORKS
QEMU, accel=tcg, boot by kexec: FAILS
QEMU, accel=tcg, boot by grub-emu: FAILS

Given that grub-emu uses kexec to boot the kernel, it's at least somewhat
consistent...