Re: [Qemu-devel] i386: EFER vs 32-bit CPU

[TeLeMan]

On Wed, May 29, 2019 at 7:27 PM Pavel Dovgalyuk <address@hidden> wrote:
>
> Hello!
>
>
>
> I found this while debugging the inconsistent saved/restored state of the 
> virtual machine.
>
>
>
> i386 (32 bit) emulation uses this register (in wrmsr and in MMU fault 
> processing).
>
> But it does not included in VMState, because "efer" field is disabled with 
> #ifdef TARGET_X86_64
>
>
>
> I think that efer should be saved for i386 too, but how it should be made to 
> preserve the backward
> compatibility?
>
> Should we add a section for i386, which duplicates efer, or just version_id 
> of the main VMSD should
> be updated?
>
>
>
> Pavel Dovgalyuk
>
>
>

Nobody followed this issue 10 years ago:

https://lists.gnu.org/archive/html/qemu-devel/2009-10/msg01765.html