Avi Kivity wrote:
> Jim Paris wrote:
>> Avi Kivity wrote:
>>
>>> - restore option roms to their original content on reset
>>> - fixes extboot failures after reset
>>
>> It doesn't seem to work here:
>
> grub is probably booting via int 19 or jumping to the reset vector, so
> kvm doesn't see the reboot.
You're right:
ENTRY(grub_reboot)
call EXT_C(prot_to_real)
.code16
/* cold boot */
movw $0x0472, %di
movw %ax, (%di)
ljmp $0xFFFF, $0x0000
> If that's the case, we can either implement
> the chipset's memory control registers properly and teach the bios to
> program them, or add a hack in the bios to trigger the copying without
> the full reset.
My testing was a bit flawed. With kvm-74, I noticed that reboot from
Linux had the problem, and reboot from grub failed the same way. With
kvm-75, I only tested reboot from grub. I can verify that reboot
from Linux works fine with virtio and kvm-75, and so the current
behavior is actually fine for us.
Thanks,
-jim
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