From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.skyhub.de ([2a01:4f8:120:8448::d00d]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VKRWK-0002D0-0G for kexec@lists.infradead.org; Fri, 13 Sep 2013 11:26:41 +0000 Date: Fri, 13 Sep 2013 13:26:54 +0200 From: Borislav Petkov Subject: Re: [PATCH 15/16] bootparam: Pass acpi_rsdp pointer in bootparam Message-ID: <20130913112654.GA12095@x1.alien8.de> References: <1378849471-10521-1-git-send-email-vgoyal@redhat.com> <1378849471-10521-16-git-send-email-vgoyal@redhat.com> <522FA2A8.8080703@zytor.com> <20130911114419.GB31551@x1.alien8.de> <20130911134534.GB15364@redhat.com> <20130911143216.GA933@x1.alien8.de> <20130912064930.GA5288@dhcp-16-126.nay.redhat.com> <20130912125350.GB9280@x1.alien8.de> <20130913071240.GF13561@dhcp-16-126.nay.redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20130913071240.GF13561@dhcp-16-126.nay.redhat.com> 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" Errors-To: kexec-bounces+dwmw2=twosheds.infradead.org@lists.infradead.org To: Dave Young Cc: matthew.garrett@nebula.com, d.kasatkin@samsung.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, ebiederm@xmission.com, "H. Peter Anvin" , akpm@linux-foundation.org, zohar@linux.vnet.ibm.com, Vivek Goyal On Fri, Sep 13, 2013 at 03:12:40PM +0800, Dave Young wrote: > Also the fw_vendor, runtime, tables elements will be fixed up to use > virtual address after 1st kernel call SetVirtualAddress, so even with > 1:1 mapping we still need save them and use in kexec kernel. As I said a couple of times already, 1:1 mapping is a no go. Concerning the runtime services, we need to pass the UEFI memory map to the kexec'ed kernel because it needs to know those to start mapping them from -4G virtual downwards. -- Regards/Gruss, Boris. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec