Re: [PATCH] Fix boot problem in situations where the boot CPU is running on a memoryless node

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To: Pekka Enberg <penberg@...>

Cc: Nishanth Aravamudan <nacc@...>, Mel Gorman <mel@...>, <akpm@...>, <linux-kernel@...>, <linuxppc-dev@...>, Aneesh Kumar K.V <aneesh.kumar@...>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...>, <lee.schermerhorn@...>, Linux MM <linux-mm@...>, Olaf Hering <olaf@...>

Subject: Re: [PATCH] Fix boot problem in situations where the boot CPU is running on a memoryless node

Date: Wednesday, January 23, 2008 - 5:14 pm

On Wed, 23 Jan 2008, Pekka Enberg wrote:

quoted text> I think Mel said that their configuration did work with 2.6.23
> although I also wonder how that's possible. AFAIK there has been some
> changes in the page allocator that might explain this. That is, if
> kmem_getpages() returned pages for memoryless node before, bootstrap
> would have worked.

Regular kmem_getpages is called with GFP_THISNODE set. There was some 
breakage in 2.6.22 and before with GFP_THISNODE returning pages from the 
wrong node if a node had no memory. So it may have worked accidentally and 
in an unsafe manner because the pages would have been associated with the 
wrong node which could trigger bug ons and locking troubles.

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Messages in current thread:

crash in kmem_cache_init, Olaf Hering, (Tue Jan 15, 11:09 am)

Re: crash in kmem_cache_init, Pekka Enberg, (Thu Jan 17, 8:14 am)

Re: crash in kmem_cache_init, Christoph Lameter, (Thu Jan 17, 10:30 am)

Re: crash in kmem_cache_init, Olaf Hering, (Thu Jan 17, 2:12 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Thu Jan 17, 3:03 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Thu Jan 17, 2:58 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Thu Jan 17, 5:15 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 2:51 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 2:47 pm)

Re: crash in kmem_cache_init, Mel Gorman, (Fri Jan 18, 5:30 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 6:16 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Fri Jan 18, 6:57 pm)

Re: crash in kmem_cache_init, Mel Gorman, (Tue Jan 22, 3:54 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Tue Jan 22, 5:45 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 6:23 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Wed Jan 23, 3:58 am)

Re: crash in kmem_cache_init, Mel Gorman, (Wed Jan 23, 6:50 am)

Re: crash in kmem_cache_init, Olaf Hering, (Wed Jan 23, 8:14 am)

Re: crash in kmem_cache_init, Mel Gorman, (Wed Jan 23, 9:41 am)

Re: crash in kmem_cache_init, Olaf Hering, (Wed Jan 23, 8:52 am)

[PATCH] Fix boot problem in situations where the boot CPU is..., Mel Gorman, (Wed Jan 23, 9:55 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 2:41 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Olaf Hering, (Wed Jan 23, 10:27 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Mel Gorman, (Wed Jan 23, 10:42 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka J Enberg, (Wed Jan 23, 10:18 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 2:35 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka J Enberg, (Wed Jan 23, 10:32 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka J Enberg, (Wed Jan 23, 10:49 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 2:36 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Mel Gorman, (Wed Jan 23, 11:56 am)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka J Enberg, (Wed Jan 23, 1:29 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Nishanth Aravamudan, (Wed Jan 23, 3:52 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka Enberg, (Wed Jan 23, 5:02 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 5:14 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Nishanth Aravamudan, (Wed Jan 23, 5:36 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 11:13 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Christoph Lameter, (Wed Jan 23, 2:51 pm)

Re: [PATCH] Fix boot problem in situations where the boot CP..., Pekka J Enberg, (Wed Jan 23, 1:42 pm)

Re: crash in kmem_cache_init, Nish Aravamudan, (Tue Jan 22, 6:12 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 4:11 pm)

Re: crash in kmem_cache_init, Mel Gorman, (Tue Jan 22, 5:26 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 5:34 pm)

Re: crash in kmem_cache_init, Mel Gorman, (Tue Jan 22, 6:50 pm)

Re: crash in kmem_cache_init, Pekka Enberg, (Tue Jan 22, 6:59 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 7:12 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 7:18 pm)

Re: crash in kmem_cache_init, Pekka Enberg, (Wed Jan 23, 4:19 am)

Re: crash in kmem_cache_init, Olaf Hering, (Wed Jan 23, 4:40 am)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 6:57 pm)

Re: crash in kmem_cache_init, Mel Gorman, (Tue Jan 22, 7:10 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Tue Jan 22, 7:14 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 6:38 pm)

Re: crash in kmem_cache_init, Nish Aravamudan, (Fri Jan 18, 6:19 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 5:43 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Fri Jan 18, 2:56 am)

Re: crash in kmem_cache_init, Christoph Lameter, (Sat Jan 19, 12:55 am)

Re: crash in kmem_cache_init, Christoph Lameter, (Fri Jan 18, 2:42 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Thu Jan 17, 3:54 pm)

Re: crash in kmem_cache_init, Olaf Hering, (Thu Jan 17, 4:20 pm)

Re: crash in kmem_cache_init, Christoph Lameter, (Sat Jan 19, 12:56 am)

Re: crash in kmem_cache_init, Olaf Hering, (Tue Jan 15, 11:58 am)


linux-kernel:
Christoph Lameter	Re: [RFC 00/15] x86_64: Optimize percpu accesses
Linus Torvalds	Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
Greg Kroah-Hartman	[PATCH 005/196] Chinese: add translation of SubmittingDrivers
Bart Van Assche	Integration of SCST in the mainstream Linux kernel
git:

openbsd-misc:

linux-netdev:
David Miller	[GIT]: Networking
David Miller	Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().
Christoph Hellwig	Re: [PATCH 06/32] IGET: Mark iget() and read_inode() as being obsolete [try #2]
Gerrit Renker	[PATCH 26/37] dccp: Integration of dynamic feature activation - part 1 (socket set...

Re: [PATCH] Fix boot problem in situations where the boot CPU is running on a memoryless node

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