Re: [Qemu-devel] Re: [PATCH 2/3] qemu: make cirrus init value pci spec compliant

[Anthony Liguori]

Gleb Natapov wrote
> > BTW, I don't think it's write-protected and it probably should be?
> >
> >     
> AFAIR it is not writable on plain qemu.
>   

KVM wants it to be writable for the TPR optimization.  Historically, it 
was read-only in QEMU but it changed to read-write in order to fake 
coreboot into thinking that the bios implemented PMM which it doesn't.

--
Regards,

Anthony Liguori