Messages in this thread | | | Subject | RE: [patch 2/2] add x86-64 support for memory hot-add | From | keith <> | Date | Mon, 09 Jan 2006 12:09:07 -0800 |
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On Mon, 2006-01-09 at 11:55 -0800, Tolentino, Matthew E wrote: > Andi Kleen <mailto:ak@suse.de> wrote: > > On Monday 09 January 2006 16:21, Matt Tolentino wrote: > >> Add x86-64 specific memory hot-add functions, Kconfig options, > >> and runtime kernel page table update functions to make > >> hot-add usable on x86-64 machines. Also, fixup the nefarious > >> conditional locking and exports pointed out by Andi. > > > > I'm trying to stabilize my tree for the 2.6.16 submission right now > > and this one comes a bit too late and is a bit too involved > > to slip through - sorry. I will consider it after Linus > > has merged the whole batch of changes for 2.6.16 - so hopefully > > in 2.6.17. > > > >> +/* > >> + * Memory hotplug specific functions > >> + * These are only for non-NUMA machines right now. > > > > How much work would it be to allow it for NUMA kernels too?
Not too much. I have a start of this code. Just saving off the SRAT locality information and using it during the add-event to decide which node it goes to. But I went to test this weekend on a multi-node system and the underlying __add_pages refused to add the pages. The underlying sparsemem can do this (It works for PPC). I am still collecting the debug info needed.
When I get the numa system sorted I will post patches.
-- keith <kmannth@us.ibm.com>
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