[SeaBIOS] Re: [PATCH v2 4/4] only enable 64bit pci io window when RAM >64G

[Rudolf Marek]

Hi,

Dne 21. 06. 24 v 15:20 Igor Mammedov napsal(a):
> >        // Old linux kernels have trouble dealing with more than 44/46
> >        // phys-bits. Seems to be a bug in the virtio-pci driver.
> >        //   46:  centos-7, ubuntu-18.04
> >        //   44:  ubuntu-16.04
> >        // Limit the used address space to mitigate the bug, except we are
> >        // running in a guest with more than 1TB of memory installed.
>
> Is it possible to fix those broken drivers (centos-7 for example)
> and ditch this heuristic altogether?

Does this code ever runs in some baremetal use cases as well?

Or at least, meybe this could be applied only when virtio devices are present (maybe even just when transitional devices are present) ?

Thanks,
Rudolf