From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ns2.suse.de ([195.135.220.15] helo=mx2.suse.de) by bombadil.infradead.org with esmtps (Exim 4.68 #1 (Red Hat Linux)) id 1KKb5u-0003hL-Pu for kexec@lists.infradead.org; Sun, 20 Jul 2008 15:45:07 +0000 Date: Sun, 20 Jul 2008 17:44:56 +0200 From: Bernhard Walle Subject: Re: linux-next: Tree for July 18: warning at kernel/lockdep.c:2068 trace_hardirqs_on_caller Message-ID: <20080720174456.55e41e8b@kopernikus.site> In-Reply-To: <20080720150341.7cd381c2@kopernikus.site> References: <20080718195352.e562a00f.sfr@canb.auug.org.au> <200807190928.33978.m.kozlowski@tuxland.pl> <19f34abd0807190255x304173d4wf2bfabb2d5bce511@mail.gmail.com> <19f34abd0807190559y2fe5ebf9h7095793e82de3122@mail.gmail.com> <20080719221723.GB5578@suse.de> <19f34abd0807191527u61c5ed61kffe2279c8d46915d@mail.gmail.com> <19f34abd0807191544nfd73be5nf7dde4b61992a7e8@mail.gmail.com> <20080719225817.GA6264@suse.de> <19f34abd0807191611y7cabf405iad307ba79591e04f@mail.gmail.com> <1216544462.9311.20.camel@nimitz> <20080720150341.7cd381c2@kopernikus.site> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Bernhard Walle Cc: Stephen Rothwell , Vegard Nossum , Pekka Enberg , Greg KH , kexec , LKML , Dave Hansen , Mariusz Kozlowski , linux-next@vger.kernel.org, Ingo Molnar , kernel-testers@vger.kernel.org, Vivek Goyal * Bernhard Walle [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 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec