On Wed, 2008-11-12 at 09:11 -0600, Hollis Blanchard wrote: > Forget pages. The errata is about the last 256 bytes of physical > memory. > > > I still find it a bit tricky to have memory nodes not aligned on > nice > > fat big boundaries tho. > > I don't know what you're referring to. The patch I sent doesn't touch > memory nodes, so they are indeed still aligned on nice fat big > boundaries.
My last comment was about the approach of modifying the memory node. > I don't think this is overengineering at all. We can't touch the last > 256 bytes, so we mark it reserved, and then we won't. Altering memory > nodes is far more complicated and error-prone. But your approach is going to be painful for kexec which will have to duplicate that logic. Again, why can't we just stick something in the kernel code that reserves the last page ? It could be in prom.c or it could be called by affected 4xx platforms by the platform code, whatever, but the reserve map isn't really meant for that and will not be passed over from kernel to kernel by kexec. Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
