On Thu, 19 Oct 2006 11:54:09 +0200, Franck Bui-Huu <vagabon.xyz@xxxxxxxxx> wrote: > > This does not work if PAGE_OFFSET was 0xffffffff80000000 and > > initrd_start was 0x980000000XXXXXXX :-) > > > > I think we should terminate this patch pretty quickly because > it's going to make me mad ;) > > How can PAGE_OFFSET be in CKSEG0 segment and initrd_start be > in XKPHYS ? If we passed a XKPHYS address to "rd_start=" option. Bad usage :-) > With the current code we can say: > > - If PAGE_OFFSET is in CKSEG0, that means that all kernel > virtual address must be in CKSEG0. > - If PAGE_OFFSET is in XKPHYS, that means that _after_ booting > process all kernel virtual address will be in XKPHYS. But we > allow CKSEG0 virtual address during boot for the reasons > we know. > > What woud give __pa(initrd_start) in your example ? > > __pa(initrd_start) -> 0x980000000XXXXXXX - 0xffffffff80000000 > > which is wrong...Does your example come from a real use case ? It's wrong indeed. But I can not see good way to handle such terrible usage. So ... let's ignore it. I'm OK, are you ? --- Atsushi Nemoto
