12 Nov
2014
12 Nov
'14
3:52 p.m.
On 12/11/2014 16:39, Peter Maydell wrote:
Definitely, I think having the OS manually program the BARs only makes sense in an environment where you don't have a full-featured boot loader or you don't trust it. In servers and virtual machines, the PCI bus should always come fully set up. This also implies that the OS should not have to deal with registers for setting up the translation between PCI and system address ranges.
It seems to me like complicated stuff like that definitely belongs in the UEFI/bootloader blob, though. I'd rather QEMU just modelled the hardware and let the guest (or the firmware, which is guest code from QEMU's point of view) set it up however it wants.
It definitely doesn't belong in QEMU!
Paolo