Ignore length of resource for PCI ROM request
Writing PCIR_BIOS is to get PCI ROM resource length. Ingore the request
as it's not support currently. Else, guest might get wrong information
about the PCI ROM resource.
@@ -1905,6 +1905,8 @@ pci_cfgrw(struct vmctx *ctx, int vcpu, int in, int bus, int slot, int func,
}
pci_set_cfgdata32(dev, coff, bar);
+ } else if (coff == PCIR_BIOS) {
+ /* ignore ROM BAR length request */
} else if (pci_emul_iscap(dev, coff)) {
pci_emul_capwrite(dev, coff, bytes, *eax);
} else if (coff >= PCIR_COMMAND && coff < PCIR_REVID) {
