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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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71cf1def1a
There are now two kinds of DMA windows that might be presented by PowerVM DDW support -- huge windows (that can map all of system memory regardless of the LPAR configuration) and non-huge windows (which can't). They are implemented slightly differently in PowerVM, and thus have different characteristics. The most obvious is that slot isolate doesn't clear the TCEs/window for us with non-huge windows. Thus, when a DLPAR operation occurs on a slot using a non-huge window, TCEs are still present (the notifier chain doesn't currently remove them explicitly) and the DLPAR fails. Fix this by calling remove_ddw() first, which will unmap the DDW TCEs. Note: a corresponding change to drmgr is needed to actually successfully DLPAR, such that the device-tree update (which causes the notifier chain to fire) occurs before slot isolate. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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| .. | ||
| cmm.c | ||
| dlpar.c | ||
| dtl.c | ||
| eeh_cache.c | ||
| eeh_dev.c | ||
| eeh_driver.c | ||
| eeh_event.c | ||
| eeh_pe.c | ||
| eeh_pseries.c | ||
| eeh_sysfs.c | ||
| eeh.c | ||
| event_sources.c | ||
| firmware.c | ||
| hotplug-cpu.c | ||
| hotplug-memory.c | ||
| hvCall_inst.c | ||
| hvCall.S | ||
| hvconsole.c | ||
| hvcserver.c | ||
| io_event_irq.c | ||
| iommu.c | ||
| Kconfig | ||
| kexec.c | ||
| lpar.c | ||
| Makefile | ||
| mobility.c | ||
| msi.c | ||
| nvram.c | ||
| offline_states.h | ||
| pci_dlpar.c | ||
| pci.c | ||
| plpar_wrappers.h | ||
| power.c | ||
| processor_idle.c | ||
| pseries_energy.c | ||
| pseries.h | ||
| ras.c | ||
| reconfig.c | ||
| scanlog.c | ||
| setup.c | ||
| smp.c | ||
| suspend.c | ||