On Tue, 2014-11-18 at 12:34 -0600, Nathan Fontenot wrote: > 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. > Got them onto mpe's -next thanks.
> Which tree were you having issue with patch 5? Looks like 16d0f5c4af76b0c3424290937bf1ac22adf439b1 was the cause of my problems. > > -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 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
