On Tue, 2007-10-02 at 13:11 -0700, Geoff Levand wrote: > Hi Badari, > > Badari Pulavarty wrote: > > Hi Paul & Ben, > > > > 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 ? > > Otherwise, we need to add arch-specific hooks in hotplug-remove > > code to be able to do this. > > > It seems the only reasonable place is in /proc/iomem, as the the > generic memory hotplug routines put it in there, and if you have > a ppc64 system that uses add_memory() you will have mem info in > several places, none of which are complete.
Well, this information exists in various places (lmb structures in the kernel), /proc/device-tree for various users. I want to find out what ppc experts think about making this available through /proc/iomem also since generic memory hotplug routines expect it there. Other option would be to provide arch-specific call out. Each arch could decide to implement whatever way they want to verify the range. Thanks, Badari _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
