On Mon, Oct 4, 2010 at 12:25 AM, Segher Boessenkool <seg...@kernel.crashing.org> wrote:
> The PowerPC OF binding requires the firmware to save and restore > the BATs on entry to / exit from the firmware. This sucks, because using the BAT is **much** easier for the firmware. In my case, it also means I don't need to worry about Linux stomping on anything -- I have nothing in RAM. (this is an emulator, but I don't want to cheat too much because adding special cases affects performance) Page tables would need to go in RAM. If Linux wants to use that memory...? It seems that Linux does tend to ask; will it panic if I refuse? Are there addresses Linux won't ever ask for? It also looks like I could just start up Linux w/o the MMU on. I'm just making 1:1 mappings anyway. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
