linux-kernel - RE: x86/non-x86: percpu, node ids, apic ids x86.git fixup

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Date:	Thu, 31 Jan 2008 10:34:23 -0800
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Mike Travis" <travis@....com>,
	"Geert Uytterhoeven" <Geert.Uytterhoeven@...ycom.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Linux Kernel Development" <linux-kernel@...r.kernel.org>,
	"Linux/PPC Development" <linuxppc-dev@...abs.org>,
	<linux-ia64@...r.kernel.org>, <sparclinux@...r.kernel.org>
Subject: RE: x86/non-x86: percpu, node ids, apic ids x86.git fixup

> hm, as far as i could check, on ia64 UP the .percpu section link 
> difference was the only ia64 difference i could find out of those 
> changes. Could you try to copy a 2.6.24 include/asm-generic/percpu.h, 
> include/asm-ia64.h and include/linux/percpu.h into your current tree, 
> and see whether that boots? If yes, then it's the percpu changes. The 
> patch below does this ontop of very latest -git - and it builds fine 
> with your UP config with a crosscompiler.

Applied that patch and UP kernel built ok, and then crashed in the
same place with the memset() to a user-looking address from kmem_cache_alloc()

So the percpu changes are innocent ... something else since 2.6.24 is
to blame.  Only 5749 commits :-)  I'll start bisecting.

-Tony
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