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In "OvmfPkg/PciHostBridgeDxe/PciRootBridgeIo.c", the RootBridgeIoCheckParameter() function hard-codes the maximum offset for the PCI config space as 0xFF (see the MAX_PCI_REG_ADDRESS macro), which matches OVMF's 0xCF8 / 0xCFC config access method. The "MdeModulePkg/Bus/Pci/PciHostBridgeDxe" driver abstracts away config space access via the PciSegmentLib class, so it has to be informed separately about the config space size. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
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Acidanthera UEFI Development Kit based on EDK II edk2-stable202405
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