[LinuxBIOS] PCI IRQ routing issues with qemu

[Ronald G Minnich]

Richard Smith wrote:
>>Config.lb. LinuxBIOS doesn't seem to be able to use the new table,
>>though:
>>
>>Copying IRQ routing tables to 0xf0000...done.
>>Verifing copy of IRQ routing tables at 0xf0000...failed
> 
> 
> What does Qemu do when the BIOS attempts to write to that area?
> Normally this range of memory is write protected.
> 

actually it is usually shadowed by that point, but not write protected.

I'm guessing turning on shadow is failing.

Build linuxbios with CONFIG_COMPRESSED=0 and see how it goes.

ron