Comment 2 for bug 957622

some more info, with debug enabled in hw/multiboot.kvm on kvm git trunk:

$ ./x86_64-softmmu/qemu-system-x86_64 --machine accel=tcg -kernel ~/grub-maverick-20100729.img
qemu: I believe we found a multiboot image!
multiboot: mh_header_addr = 0x10025c
multiboot: mh_load_addr = 0x100000
multiboot: mh_load_end_addr = 0
multiboot: mh_bss_end_addr = 0
qemu: loading multiboot kernel (0xfff00000 bytes) at 0x100000

GLib-ERROR **: /build/buildd/glib2.0-2.31.20/./glib/gmem.c:165: failed to allocate 4293918720 bytes
Trace/breakpoint trap (core dumped)