Wei Liu
2013-Dec-04 11:32 UTC
Re: [edk2] [PATCH v4 1/7] MdeModulePkg: introduce PcdPciDisableBusEnumeration
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 theYes. 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.