Re: linux-next: Tree for July 18: warning at kernel/lockdep.c:2068 trace_hardirqs_on_caller

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From: Dave Hansen
Date: Sunday, July 20, 2008 - 2:01 am

On Sun, 2008-07-20 at 01:11 +0200, Vegard Nossum wrote:

Heh, I'm catching up on this thread...

It is possible that it could run later.  But, I do know that there are
at least a couple of these tables (on various arches) that we toss out
of memory or become unavailable later in boot.  

I do this this:

    sysfs: add /sys/firmware/memmap

is really being done at the wrong level.  I don't, for instance, see
*any* reference to memory hotplug in these patches.  That's because
they're done against firmware structures, and memory hotplug doesn't
update firmware structures on the two architectures that I can remember
(ppc64 and x86).

In other words, kexec using this probably won't work on a memory hotplug
machine.

Secondly, why don't we just modify the
existing /sys/devices/system/memory things to properly export what exec
needs?  They're already cross-platform *and* they're updated with memory
hotplug events.  

-- Dave

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Messages in current thread:
linux-next: Tree for July 18, Stephen Rothwell, (Fri Jul 18, 2:53 am)
Re: linux-next: Tree for July 18: warning at kernel/lockde ..., Mariusz Kozlowski, (Sat Jul 19, 12:28 am)
Re: linux-next: Tree for July 18: nfs problems, Mariusz Kozlowski, (Sat Jul 19, 12:39 am)
Re: linux-next: Tree for July 18: powerpc g3 hangs, Mariusz Kozlowski, (Sat Jul 19, 2:35 am)
Re: linux-next: Tree for July 18 (very early crash on x86_32), Bartlomiej Zolnierki ..., (Sat Jul 19, 8:31 am)
Re: linux-next: Tree for July 18: sky2 WOL broken, Rafael J. Wysocki, (Sat Jul 19, 5:20 pm)
Re: linux-next: Tree for July 18: warning at kernel/lockde ..., Dave Hansen, (Sun Jul 20, 2:01 am)