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

[Gleb Natapov]

On Mon, Oct 12, 2009 at 08:44:56AM -0500, Anthony Liguori wrote:
> 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,
I don't think so. TPR will work after BIOS will be shadowed. This is simply
KVM shortcoming.

> it was read-only in QEMU but it changed to read-write in order to
I just checked. It is still read-only in QEMU _before_ BIOS is shadowed.

> fake coreboot into thinking that the bios implemented PMM which it
> doesn't.
What is PMM? Post memory manager? How is it related?

--
                        Gleb.