Re: [PATCH v10 09/13] mm/sparsemem: Support sub-section hotplug

2019-06-24 Thread Oscar Salvador
On Tue, 2019-06-18 at 22:52 -0700, Dan Williams wrote: > The libnvdimm sub-system has suffered a series of hacks and broken > workarounds for the memory-hotplug implementation's awkward > section-aligned (128MB) granularity. For example the following > backtrace > is emitted when attempting arch_ad

[PATCH v10 09/13] mm/sparsemem: Support sub-section hotplug

2019-06-18 Thread Dan Williams
The libnvdimm sub-system has suffered a series of hacks and broken workarounds for the memory-hotplug implementation's awkward section-aligned (128MB) granularity. For example the following backtrace is emitted when attempting arch_add_memory() with physical address ranges that intersect 'System RA