Re: Protected mode transitions and big real mode... still an issue

Anthony Liguori
2008-05-06T14:30:44Z

Guillaume Thouvenin wrote:
> On Mon, 5 May 2008 16:29:21 +0300
> "Mohammed Gamal" <m.gamal005@gmail.com> wrote:
>
>
>> On Mon, May 5, 2008 at 3:57 PM, Anthony Liguori <anthony@codemonkey.ws> wrote:
>>
>>
>>> WinXP fails to boot with your patch applied too. FWIW, Ubuntu 8.04 has
>>> a fixed version of gfxboot that doesn't do nasty things with SS on
>>> privileged mode transitions.
>>>
>>>
>> WinXP fails with the patch applied too. Ubuntu 7.10 live CD and
>> FreeDOS don't boot but complain about instruction mov 0x11,sreg not
>> being emulated.
>>
>
> Can you try with this one please?
> On my computer it boots ubuntu-8.04-desktop-i386.iso liveCD and also
> openSUSE-10.3-GM-x86_64-mini.iso
>

8.04 is not a good test-case. 7.10 is what you want to try.

The good news is, 7.10 appears to work! The bad news is that about 20%
of the time, it crashes and displays the following:

kvm_run: failed entry, reason 5
kvm_run returned -8

So something appears to be a bit buggy. Still, very good work!

Regards,

Anthony Liguori