Hi Nathan, I tried to apply these to Linus' tree and Mpes tree and to stable and got several problems, I got stuck at the third hunk in patch 5.
Could you point out where I'm going wrong? Thanks, Cyril On Mon, 2014-11-17 at 15:44 -0600, Nathan Fontenot wrote: > In order to better support device hotplug (cpu, memory, and pci) in the > PowerVM and PowerKVM environments, the handling of device hotplug > could be updated so that the act of hotplugging a device occurs entirely > in the kernel. This patch set begins to address this by moving > memory hotplug to the kernel. Patches to follow will do the same > for cpu and pci devices. > > To provide background, the current handling of memory hotplug is > handled by the drmgr command. This command is invoked when memory > add/remove requests are made at the HMC and conveyed to a partition > through the RSCT framework. The drmgr command then performs parts > of the hotplug in user-space and makes requests to the kernel to perform > other pieces. This is not really ideal, we can do everything in the > kernel and do it faster. > > In this patchset, hotplug events will now be communicated to the kernel > in the form of rtas hotplug events. For PowerKVM systems this is done > by qemu using the ras epow interrupt. For PowerVM systems the drmgr > command will be updated to create a rtas hotplug event and send it to > the kernel via a new /sys/kernel/dlpar interface. Both of these > entry points for hotplug rtas events then call a common routine > for handling rtas hotplug events. > > -Nathan > > Patch 1/6 > - Add definition of hotplug rtas event sections. > > Patch 2/6 > - Update struct of_drconf_cell to use __be64/__be32 > > Patch 3/6 > - Export the dlpar_[acquire|release]drc() routines. > > Patch 4/6 > - Create the new /sys/kernel/dlpar interface > > Patch 5/6 > - Implement memory hotplug add in the kernel. > > Patch 6/6 > - Implement memory hotplug remove in the kernel. > > include/asm/prom.h | 10 > include/asm/rtas.h | 26 ++ > platforms/pseries/dlpar.c | 72 +++++ > platforms/pseries/hotplug-memory.c | 469 > ++++++++++++++++++++++++++++++++++++- > platforms/pseries/pseries.h | 12 > 5 files changed, 576 insertions(+), 13 deletions(-) > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
