From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFC67C6778A for ; Mon, 9 Jul 2018 06:30:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F18920852 for ; Mon, 9 Jul 2018 06:30:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="f88Z9qF9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F18920852 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754479AbeGIGak (ORCPT ); Mon, 9 Jul 2018 02:30:40 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:42955 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754065AbeGIGai (ORCPT ); Mon, 9 Jul 2018 02:30:38 -0400 Received: by mail-pf0-f193.google.com with SMTP id l9-v6so1285002pff.9 for ; Sun, 08 Jul 2018 23:30:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:mail-followup-to:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Yi5vgkX1BLOl47glfTMfQXgNLHgAu+/MvTXWG5XQpwI=; b=f88Z9qF9IxHQa9NAuKaj97iBDEDjc+hRHUJF0+WbfaP1JXLjaRWVvAYwQp8t0vxeBs yhr3yq1do7riNLjyncqZwH663XrRZwr3uR+ELFFSTo5XaTCir1vyvbnchCCoPgqIUMxD BqSsYk+ZcfykiBHtwhaQPQV2zfl+0jW79Acis= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id :mail-followup-to:references:mime-version:content-disposition :in-reply-to:user-agent; bh=Yi5vgkX1BLOl47glfTMfQXgNLHgAu+/MvTXWG5XQpwI=; b=tL7kdknN3Xjv/R7/xUEKaM+hzRD/7VV3oakMKh26kjKkX3wiW0noFv9o9sn+rkHOOl LTQa6X1+T2rN5SeqTcMvQkWUD60yFnbLeaeqXQU1jwAT5mcP5DJGU4AC9cKUJGdoAX8E oRSc/kMO28ItQ8ssMOdVUNiQf0He7Ug8sEdgws3EiVrNBv6a1dKUvaTUmeA1XGUIjCfz RsFXYJ48y/eAbJOw2eI61eK3YpWhbdxwO4C2tRTz4vSYjDs+/wAyIxfBhf6hzKiWvmde C2J8uoegIAOGkSMRV85jFX8F/Tr3aAteytz51KEvLjD0vS+X+AceBO5w35+cgFfgVcXy y+Ag== X-Gm-Message-State: APt69E275KakO5IPgU+C3Hbm9QTeMcMFxmbTa5yMTH0k1GcoG3pFChQY 9MPn/uKBj4W9BHrpbFCH2pyrnA== X-Google-Smtp-Source: AAOMgpdpDP26GBxVnfmOW4Mf5m70Rd/VY8jQwB8TKMcmTXkHGt41dXcFZpZ2DmZ7bntvJ/i3Kz9Gjw== X-Received: by 2002:a65:5106:: with SMTP id f6-v6mr17492259pgq.72.1531117838183; Sun, 08 Jul 2018 23:30:38 -0700 (PDT) Received: from linaro.org ([121.95.100.191]) by smtp.googlemail.com with ESMTPSA id q28-v6sm19912331pfg.144.2018.07.08.23.30.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 08 Jul 2018 23:30:37 -0700 (PDT) Date: Mon, 9 Jul 2018 15:31:56 +0900 From: AKASHI Takahiro To: James Morse Cc: catalin.marinas@arm.com, will.deacon@arm.com, dhowells@redhat.com, vgoyal@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de, ard.biesheuvel@linaro.org, bhsharma@redhat.com, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 07/14] arm64: enable KEXEC_FILE config Message-ID: <20180709063136.GS28220@linaro.org> Mail-Followup-To: AKASHI Takahiro , James Morse , catalin.marinas@arm.com, will.deacon@arm.com, dhowells@redhat.com, vgoyal@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de, ard.biesheuvel@linaro.org, bhsharma@redhat.com, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20180623022058.10935-1-takahiro.akashi@linaro.org> <20180623022058.10935-8-takahiro.akashi@linaro.org> <9545cb7f-9648-660a-f034-a94f186a8224@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9545cb7f-9648-660a-f034-a94f186a8224@arm.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org James, On Tue, Jul 03, 2018 at 05:33:20PM +0100, James Morse wrote: > Hi Akashi, > > On 23/06/18 03:20, AKASHI Takahiro wrote: > > Modify arm64/Kconfig to enable kexec_file_load support. > > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > > index 42c090cf0292..f68318f61c85 100644 > > --- a/arch/arm64/Kconfig > > +++ b/arch/arm64/Kconfig > > @@ -835,6 +835,16 @@ config KEXEC > > but it is independent of the system firmware. And like a reboot > > you can start any kernel with it, not just Linux. > > > > +config KEXEC_FILE > > + bool "kexec file based system call" > > + select KEXEC_CORE > > + select BUILD_BIN2C > > Wasn't BIN2C only needed for purgatory? Right. Will remove it. > x86/powerpc/s390 all select CRYPTO_SHA256 here, presumably for arch-specific > verification mechanisms. I assume we're using SIGNED_PE_FILE_VERIFICATION instead. To be clear, hash check (sha256) will be done at reboot (in purgatory), while binary verification will be done at load. > > > + help > > + This is new version of kexec system call. This system call is > > + file based and takes file descriptors as system call argument > > + for kernel and initramfs as opposed to list of segments as > > + accepted by previous system call. > > + > > config CRASH_DUMP > > bool "Build kdump crash kernel" > > help > > > Acked-by: James Morse Thanks! -Takahiro AKASHI > > Thanks, > > James