On 27/12/18 21:31, Eduardo Habkost wrote: > All that said, I miss one piece of information here: is > XLF_CAN_BE_LOADED_ABOVE_4G really supposed to override > header+0x22c? linux/Documentation/x86/boot.txt isn't clear about > that. Is there any reference that can help us confirm this?
Linux has supported initrd up to 4 GB for a very long time (2007, long before XLF_CAN_BE_LOADED_ABOVE_4G which was added in 2013), though it only sets initrd_max to 2 GB to "work around bootloader bugs". So I guess the flag can be taken as a hint that you can load at any address, and perhaps could be renamed. Paolo
