Return-path: Received: from out02.mta.xmission.com ([166.70.13.232]) by bombadil.infradead.org with esmtp (Exim 4.68 #1 (Red Hat Linux)) id 1Jwovh-000524-2P for kexec@lists.infradead.org; Fri, 16 May 2008 01:40:17 +0000 From: ebiederm@xmission.com (Eric W. Biederman) References: <1204773188.4707.109.camel@caritas-dev.intel.com> <20080514205204.GJ30469@redhat.com> <1210830110.23707.141.camel@caritas-dev.intel.com> <20080516005121.GA6926@redhat.com> Date: Thu, 15 May 2008 18:35:28 -0700 In-Reply-To: <20080516005121.GA6926@redhat.com> (Vivek Goyal's message of "Thu, 15 May 2008 20:51:21 -0400") Message-ID: MIME-Version: 1.0 Subject: Re: [PATCH -mm] kexec jump -v9 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: Vivek Goyal Cc: nigel@nigel.suspend2.net, Kexec Mailing List , linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Pavel Machek , "Huang, Ying" , Andrew Morton , linux-pm@lists.linux-foundation.org Vivek Goyal writes: > ioapic_suspend() is not putting APICs in Legacy mode and that's why > we are seeing the issue. It only saves the IOAPIC routing table entries > and these entries are restored during ioapic_resume(). > > But I think somebody has to put APICs in legacy mode for normal > hibernation also. Not sure who does it. May be BIOS, so that during > resume, second kernel can get the timer interrupts. I doubt anything cares in the suspend to ram case. There should just be a small BIOS trampoline to get back to linux when the processor restarts. And you don't need interrupts for any of that. Eric _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec