Re: [Xen-devel] [edk2] [PATCH v4 1/7] MdeModulePkg: introduce PcdPciDisableBusEnumeration

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Please don't drop Xen-devel.

On Wed, Dec 04, 2013 at 08:13:13AM +0000, Ni, Ruiyu wrote:
> Jordan/Wei,
> Does Xen care about the PCI option rom? Because I just found the

Yes. In seabios case it calls options roms if there's any. I think OVMF
should do the same thing.

> PciBusNoEnumerationDxe driver support dispatching the UEFI option rom
> loaded by the PciRootBridgeNoEnumerationDxe driver.
> PciRootBridgeNoEnumerationDxe installs an option ROM buffer table to
> configuration table to be retrieved by PciBusNoEnumerationDxe.
> 
> One possible way to resolve this and safely retire
> PciBusNoEnumerationDxe is to change PciBus driver full enumeration
> logic to also install the option rom buffer table to configuration
> table, instead of to save it in a global variable.

I can't speak for code that I'm not familiar with. I just want to ask if
there's any implication on Xen side's implementation?

Wei.

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