Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756182Ab3I3VJo (ORCPT ); Mon, 30 Sep 2013 17:09:44 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55560 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755507Ab3I3VJm (ORCPT ); Mon, 30 Sep 2013 17:09:42 -0400 Date: Mon, 30 Sep 2013 17:09:21 -0400 From: Vivek Goyal To: Borislav Petkov Cc: "H. Peter Anvin" , Dave Young , X86 ML , LKML , Borislav Petkov , Matt Fleming , Matthew Garrett , James Bottomley , linux-efi@vger.kernel.org Subject: Re: [PATCH -v2] EFI: Runtime services virtual mapping Message-ID: <20130930210921.GC6116@redhat.com> References: <52422A6A.8080305@zytor.com> <20130926031242.GA4487@dhcp-16-126.nay.redhat.com> <20130930201730.GD16383@pd.tnic> <20130930203505.GA6116@redhat.com> <20130930204154.GE19411@pd.tnic> <20130930204642.GB6116@redhat.com> <20130930210646.GF19411@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130930210646.GF19411@pd.tnic> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1171 Lines: 26 On Mon, Sep 30, 2013 at 11:06:46PM +0200, Borislav Petkov wrote: > On Mon, Sep 30, 2013 at 04:46:42PM -0400, Vivek Goyal wrote: > > On Mon, Sep 30, 2013 at 10:41:54PM +0200, Borislav Petkov wrote: > > > > [..] > > > hpa, so, for the struct efi_mapping thing to work, I will have to grep > > > dmesg of the first kernel to get an output like the one below, filter > > > the runtime regions so that I can build the struct efi_mapping array of > > > mem regions which I pass on to the second, kexec kernel with setup_data. > > > > Any data you need to pass to second kernel will have to be exported to > > user space either using /sys or /proc so that kexec-tools can parse it. > > And I cannot parse dmesg? Because I have all the info there already. dmesg can 't relied on. It is just a kernel buffer which root can clear. (dmesg --clear). So required info has to be exported to user space in a suitable form. Thanks Vivek -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/