Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755515Ab3JJI6f (ORCPT ); Thu, 10 Oct 2013 04:58:35 -0400 Received: from mail.skyhub.de ([78.46.96.112]:57464 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752549Ab3JJI6d (ORCPT ); Thu, 10 Oct 2013 04:58:33 -0400 Date: Thu, 10 Oct 2013 10:58:28 +0200 From: Borislav Petkov To: Dave Young Cc: X86 ML , LKML , Borislav Petkov , Matt Fleming , Matthew Garrett , "H. Peter Anvin" , James Bottomley , Vivek Goyal , linux-efi@vger.kernel.org, fwts-devel@lists.ubuntu.com Subject: Re: [PATCH 12/12] EFI: Runtime services virtual mapping Message-ID: <20131010085827.GA9929@pd.tnic> References: <1379602494-26684-1-git-send-email-bp@alien8.de> <20131008164551.GB16793@pd.tnic> <20131008164831.GD16793@pd.tnic> <20131010080635.GA3692@dhcp-16-126.nay.redhat.com> <20131010081434.GB3692@dhcp-16-126.nay.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20131010081434.GB3692@dhcp-16-126.nay.redhat.com> 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: 1293 Lines: 32 On Thu, Oct 10, 2013 at 04:14:34PM +0800, Dave Young wrote: > Even though I still have no idea why kernel text overlap with efi boot > region, anyway map the un-overlapped part is necessary though. > > I can post the kexec related patches after your mapping patches settle > down Right, "settle down" being the key here. Matt just mentioned on IRC that we might not need boot services mappings by the time we have to start the kexec kernel, which would mean, you don't have to do anything in efi_reserve_boot_services(). The question which needs answering first though is, how the whole efi thing is going to handle any functionality like calling into efi boot regions from runtime functions and such. Which hasn't really been tested and fw vendors don't really want to support that. But this is all bits and pieces I heard yesterday so it is all pretty wet and I'll let efi guys, i.e. the Matts and a couple of others :-), figure out this whole issue. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- 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/