Badari Pulavarty writes: > I am trying to get hotplug memory remove working on ppc64. > In order to verify a given memory region, if its valid or not - > current hotplug-memory patches used /proc/iomem. On IA64 and > x86-64 /proc/iomem shows all memory regions. > > I am wondering, if its acceptable to do the same on ppc64 also ?
I am a bit hesitant to do that, since /proc/iomem is user visible and is therefore part of the user/kernel ABI. Also it feels a bit weird to have system RAM in something whose name suggests it's about MMIO. > Otherwise, we need to add arch-specific hooks in hotplug-remove > code to be able to do this. Isn't it just a matter of abstracting the test for a valid range of memory? If it's really hard to abstract that, then I guess we can put RAM in iomem_resource, but I'd rather not. Thanks, Paul. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
