On Sat, 2013-06-01 at 18:59 +0800, Kevin Hao wrote: > The effect of this change is that the isa_io_base will be 0 and the IO > resource are equal to the virtual address of the IO space. But the IO > functions such as outx/inx should work as well. This is why I ask the > above question. What do you think about this? Are there any subtle bugs > that will be triggered by this?
I don't see any obvious reason why that wouldn't work but like anything in that area, it needs a bit of testing & hammering to be sure ;-) In fact it would work on pmac32 as well since those generally don't have legacy crap either. So I have no fundamental objection, it just needs testing. My worry is that we need to make sure we don't break old chrp and I don't have any to test with. I'm happy to drop support for stuff nobody uses anymore (we did drop PReP after all and I'm *that* close to drop power3) but as long as somebody is still using a CHRP RS6K or a Pegasos I can't quite drop those... And they do have legacy ISA crap to deal with. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
