From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from terminus.zytor.com ([198.137.202.10]) by bombadil.infradead.org with esmtps (Exim 4.68 #1 (Red Hat Linux)) id 1L0PIe-0007EK-CS for kexec@lists.infradead.org; Wed, 12 Nov 2008 23:39:05 +0000 Message-ID: <491B6855.1080609@kernel.org> Date: Wed, 12 Nov 2008 15:35:49 -0800 From: "H. Peter Anvin" MIME-Version: 1.0 Subject: Re: [PATCH] Always use 64 bit addresses for the firmware memory map References: <1226519089-21647-1-git-send-email-bwalle@suse.de> <491B358D.2040304@kernel.org> <20081112221106.5d9d7801@kopernikus.site> In-Reply-To: <20081112221106.5d9d7801@kopernikus.site> 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: x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org Bernhard Walle wrote: > * H. Peter Anvin [2008-11-12 11:59]: >> I want to make sure, though, that we don't just end up pushing the >> truncation further down in the code. > > Well, I think that interface should export the BIOS memmap as provided. > Since E820 does provide 64 bit addresses, that should get exported. > > It should even possible to kexec a PAE kernel from a non PAE kernel ... > I didn't test, but it could work. But only if the E820 map is correctly > written in the zero page, which is only the case if we get it correctly. > That's fine, but we do have to check that we don't truncate elsewhere. -hpa _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec