Re: [kvm-devel] [PATCH] gfxboot VMX workaround v2

[Anthony L. <an...@co...>]

Guillaume Thouvenin wrote:
> On Mon, 07 Apr 2008 11:05:06 -0500
> Anthony Liguori <an...@co...> wrote:
>
>   
>> Perhaps a viable way to fix this upstream would be to catch the vmentry 
>> failure, look to see if SS.CPL != CS.CPL, and if so, invoke 
>> x86_emulate() in a loop until SS.CPL == CS.CPL.
>>     
>
> I tried this solution some time ago but unfortunately x86_emulate()
> failed. I suspected a problem with guest EIP that could different
> between the vmentry catch and the emulation. I will rebase my patch and
> post them on the mailing list.
>   

x86 emulate is missing support for jmp far which is used to switch into 
protected mode.  It just needs to be added.

Regards,

Anthony Liguori

> Regards,
> Guillaume
>