On Thu, Jun 20, 2024 at 07:08:38PM +0100, John Levon wrote:
> On Thu, Jun 20, 2024 at 01:29:11PM -0400, Kevin O'Connor wrote:
> 
> > I'm leery of moving this heuristic to 64G of ram.  I can understand
> > the logic of >4G of ram indicating support for >4G pci.  However, it
> > seems strange to me that there would be guests with 50G of ram that
> > can't handle >4G pci, but not similar guests with 70G of ram..  It
> 
> Such a guest cannot possibly address that much, so it doesn't seem at all
> unreasonable to require a config change there. That is, by definition there
> can't be a workload in the OS that's relying on 70G of RAM.

Thanks.  I missed that PAE is limited to 36bits (64GB).

Is the problem that SeaBIOS created PCI mappings >4G or is the problem
that SeaBIOS created PCI mappings >64G?

-Kevin
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