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

[Pavel Dovgalyuk]

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