From: Bernhard Walle <bwalle@suse.de>
To: Bernhard Walle <bwalle@suse.de>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
Vegard Nossum <vegard.nossum@gmail.com>,
Pekka Enberg <penberg@cs.helsinki.fi>, Greg KH <gregkh@suse.de>,
kexec <kexec@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Mariusz Kozlowski <m.kozlowski@tuxland.pl>,
linux-next@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
kernel-testers@vger.kernel.org, Vivek Goyal <vgoyal@redhat.com>
Subject: Re: linux-next: Tree for July 18: warning at kernel/lockdep.c:2068 trace_hardirqs_on_caller
Date: Sun, 20 Jul 2008 17:44:56 +0200 [thread overview]
Message-ID: <20080720174456.55e41e8b@kopernikus.site> (raw)
In-Reply-To: <20080720150341.7cd381c2@kopernikus.site>
* Bernhard Walle <bwalle@suse.de> [2008-07-20 15:03]:
>
> Because I didn't know that interface. And because I don't see that
> interface on my two systems that I just checked. i386 and x86-64. What
> do I have to do to enable that interface?
That interface depends on CONFIG_MEMORY_HOTPLUG. But given to that
dependency list,
128 config MEMORY_HOTPLUG
129 bool "Allow for memory hot-add"
130 depends on SPARSEMEM || X86_64_ACPI_NUMA
131 depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG
132 depends on (IA64 || X86 || PPC64 || SUPERH || S390)
that interface is off on *many* systems (i386, x86_64), so we can't rely
on that interface in kexec. I think on POWER it's much more common than
on PC architectures.
Bernhard
--
Bernhard Walle, SUSE LINUX Products GmbH, Architecture Development
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next prev parent reply other threads:[~2008-07-20 15:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080718195352.e562a00f.sfr@canb.auug.org.au>
[not found] ` <200807190928.33978.m.kozlowski@tuxland.pl>
[not found] ` <19f34abd0807190255x304173d4wf2bfabb2d5bce511@mail.gmail.com>
[not found] ` <19f34abd0807190559y2fe5ebf9h7095793e82de3122@mail.gmail.com>
[not found] ` <20080719221723.GB5578@suse.de>
[not found] ` <19f34abd0807191527u61c5ed61kffe2279c8d46915d@mail.gmail.com>
[not found] ` <19f34abd0807191544nfd73be5nf7dde4b61992a7e8@mail.gmail.com>
[not found] ` <20080719225817.GA6264@suse.de>
[not found] ` <19f34abd0807191611y7cabf405iad307ba79591e04f@mail.gmail.com>
2008-07-20 9:01 ` linux-next: Tree for July 18: warning at kernel/lockdep.c:2068 trace_hardirqs_on_caller Dave Hansen
2008-07-20 9:35 ` Thomas Meyer
2008-07-20 13:03 ` Bernhard Walle
2008-07-20 15:44 ` Bernhard Walle [this message]
2008-07-21 13:17 ` Vivek Goyal
2008-07-21 13:25 ` Bernhard Walle
2008-07-21 13:39 ` Vivek Goyal
2008-07-21 13:47 ` Bernhard Walle
2008-07-21 14:54 ` Vivek Goyal
2008-07-21 15:00 ` Bernhard Walle
2008-07-21 15:00 ` Bernhard Walle
2008-07-22 6:15 ` Yasunori Goto
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