On 11/17/2014 08:00 PM, Cyril Bur wrote: > 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.
I based these patches off of mpe's -next tree. I did a fresh pull of mpe's tree and found that they do apply with some fuzz to the master branch. Which tree were you having issue with patch 5? -Nathan > > 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 > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
