* Suzuki K. Poulose | 2011-07-12 12:14:16 [+0530]: >Changes from V1: Uses a tmp mapping in the other address space to setup > the 1:1 mapping (suggested by Sebastian Andrzej Siewior). > >Note: Should we do the same for kernel entry code for PPC44x ? You have one the kernel mapping. Then you make your temporary mapping which might be just the one valid TLB entry (after you invalidated the others). After that you setup multiple mappings to cover 0..2GiB address space. Since the kernel runs at 0xC.... and you need 0x0.. for the same memory you end up at some point with two mappings for the same memory. The reference manual says one should not have two active mappings for piece of memory. That is why the "other address space" is should be used. So I think using this "other address space" for the entry code isn't a bad idea. However, I'm fine with this patch. Sebastian
