Re: [SeaBIOS] [RFC 2/3] Transitions to and from 64 bits

[Marc Marí]

On Mon, 21 Sep 2015 17:00:51 +0200
Paolo Bonzini  wrote:
> On 21/09/2015 16:38, Marc Marí wrote:
> > True. Tried with 2M. The memory used went down from 8M to 24K more
> > or less, and the time for the copying went down by 4ms (from 15ms to
> > 11ms). The other option is 1GB. I'll test later if it's enabled in
> > QEMU CPUs.
>
> Only in some AMD CPUs (plus "-cpu host" if supported by your machine)
> because Intel only makes 1GB pages available on Xeons.  But you can
> just check the guest CPUID inside SeaBIOS, and test on a suitable
> machine.

And I forgot to mention that CPUID checking for long mode support is
also missing. So I'll need to check the CPUID anyway.

Thanks
Marc