Re: [Qemu-devel] [PATCH] add 40-48 bit RAM range to seabios

[Kevin O'Connor]

On Fri, Sep 17, 2010 at 07:53:12AM -0500, Anthony Liguori wrote:
> On 09/16/2010 08:47 PM, Kevin O'Connor wrote:
> >On Wed, Sep 15, 2010 at 07:15:28PM +0200, Andrea Arcangeli wrote:
> >>This uses a new cmos port at 0x5e that shall read zero to be backwards
> >>compatible.
> >It looks okay to me.  Can you provide an Acked-by from one of the qemu
> >or kvm maintainers?
> 
> Is CMOS the best place to communicate this (as opposed to fw_cfg)?
> 
> I know we currently expose memory size via CMOS but perhaps it's
> better to switch to a 64-bit fw_cfg value.

I'd personally prefer fw_cfg.

Also, another possibility would be to stop sending an absolute max and
to instead send a map of memory.  The latter would allow for
non-contiguous memory.

-Kevin