Hi, On Saturday 19 July 2008 00:14:35 Benjamin Herrenschmidt wrote: > On Fri, 2008-07-18 at 20:43 +0200, Marvin wrote: > > Hi, > > > > while trying to cleanup some configs/makefiles for ppc64 I noticed, that > > CONFIG_POWER4 implies CONFIG_PPC64 and vice versa in all defconfigs. > > So I want to boldly replace CONFIG_POWER4 by CONFIG_PPC64 - ugh. > > No, those are different. > > CONFIG_PPC64 means a 64 bits kernel. > > CONFIG_POWER4 means a 64 bits kernel that only runs on IBM POWER4 and > later (ie, processors conforming to, iirc, version 2.01 or later of > the architecture). > > That is, it's legal to have CONFIG_PPC64 and !CONFIG_POWER4, and this > is even necessary if you want to boot on a POWER3 or an RS64 processor.
I don't want to replace CONFIG_POWER4 by void, but by something like CONFIG_TUNE_POWER4 (see my previous post, one week ago). So there is no "feature loss". CONFIG_POWER3 is used only to define HAVE_BATS, so I thought I can clean this up. > Now, there also used to be some 32 bits support for POWER4 and G5 but > that has been dropped a while ago. Ok - that's fine. I hope to finish my patches during the weekend, so things will become more clear. Greetings Marvin _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev