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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no 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 DFF3AC47404 for ; Mon, 7 Oct 2019 19:00:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B70F4206C2 for ; Mon, 7 Oct 2019 19:00:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="g4IImn2a"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="bUMg9NWE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B70F4206C2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=IrlNlUQ3u5FjdrQxPhfw0KtFmo4iO+zlhG84jMpOmEc=; b=g4I Imn2akJU5WQji1cX2nhT1cXEcVr4SNMPD311LyHtMkEHHe4/muHBOzOa+2LVnMQYsTSf9gDFiB804 NMMJepSloaShRy0cPPjv2+4ZwXScANWTTVPuirqJep9mSGBLwD7VidNInZ9J50mMVw3rnzTTA0khC TT+46rTw/N/1act3vOAFFsGKEDHM9wNcsLVfZxFIdIVeQchiuI6MTsokxeeBusu0NYihwE9lYY8sa A3wFtkVFRYSZ2HaYm1qJaSe8jEb0PSrmL1yB6fZ4lZkjRmOFHpGhH4I+n3bRiPdeOopylcUapvNOq UO5L0u6fhYX5p6uoHP9b4ScZ8XknV2A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHYEj-0004QJ-OH; Mon, 07 Oct 2019 19:00:01 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iHYEf-0004NQ-7j; Mon, 07 Oct 2019 18:59:58 +0000 Received: from prsriva-Precision-Tower-5810.corp.microsoft.com (unknown [167.220.2.18]) by linux.microsoft.com (Postfix) with ESMTPSA id 69A6F20B71C6; Mon, 7 Oct 2019 11:59:51 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 69A6F20B71C6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1570474791; bh=i1YNYZkRfCpA/p84XvJ1BSmi0vYuNO3vasWc16x7h5w=; h=From:To:Cc:Subject:Date:From; b=bUMg9NWEr+pp4M2o41A1e1I9U30OnGMtJhnx5DLEgLo6Kvcv/b5OkxyhB8aSgkInp eo2PjiRS6TrrYXd3ZUOJxHABmgq4nnQkVVg08ZYCrpoXmkqPAB1v5xw2pQTroT4DmQ EHeXmaECc+Lvvmabg74le1t8VtAaamTGop/Rkdpw= From: Prakhar Srivastava To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-integrity@vger.kernel.org, kexec@lists.infradead.org Subject: [PATCH v2 0/2] Add support to carry ima measurement log in kexec_file_load Date: Mon, 7 Oct 2019 11:59:41 -0700 Message-Id: <20191007185943.1828-1-prsriva@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191007_115957_301743_8CB56EAA X-CRM114-Status: GOOD ( 11.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, jean-philippe@linaro.org, arnd@arndb.de, takahiro.akashi@linaro.org, sboyd@kernel.org, catalin.marinas@arm.com, zohar@linux.ibm.com, yamada.masahiro@socionext.com, kristina.martsenko@arm.org, duwe@lst.de, bauerman@linux.ibm.com, james.morse@arm.org, tglx@linutronix.de, allison@lohutok.net MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support to carry ima measurement log to the next kexec'ed session triggered via kexec_file_load. - Top of Linux 5.3-rc6 Currently during kexec the kernel file signatures are/can be validated prior to actual load, the information(PE/ima signature) is not carried to the next session. This lead to loss of information. Carrying forward the ima measurement log to the next kexec'ed session allows a verifying party to get the entire runtime event log since the last full reboot, since that is when PCRs were last reset. Tested for arm64 qemu and real hardware. I have not been unable to test the patch for powerpc 64bit. Any testing is greatly appretiated. TODO: Add support for 32 bit in the of_ima.c Changelog: v2: - move common code to drivers/of/of_ima.c. - point arm64 to use of_ima implementation. - point powerpc to use of_ima implementation v1: - add new fdt porperties to mark start and end for ima measurement log. - use fdt_* functions to add/remove fdt properties and memory allocations. - remove additional check for endian-ness as they are checked in fdt_* functions. v0: - Add support to carry ima measurement log in arm64, uses same code as powerpc. Prakhar Srivastava (2): Add support for arm64 to carry ima measurement log in kexec_file_load update powerpc implementation to call into of_ima* arch/Kconfig | 6 +- arch/arm64/include/asm/ima.h | 24 +++ arch/arm64/include/asm/kexec.h | 5 + arch/arm64/kernel/Makefile | 3 +- arch/arm64/kernel/ima_kexec.c | 78 ++++++++++ arch/arm64/kernel/machine_kexec_file.c | 6 + arch/powerpc/include/asm/ima.h | 6 - arch/powerpc/kernel/Makefile | 8 +- arch/powerpc/kernel/ima_kexec.c | 170 ++------------------- drivers/of/Kconfig | 6 + drivers/of/Makefile | 1 + drivers/of/of_ima.c | 204 +++++++++++++++++++++++++ include/linux/of.h | 31 ++++ 13 files changed, 378 insertions(+), 170 deletions(-) create mode 100644 arch/arm64/include/asm/ima.h create mode 100644 arch/arm64/kernel/ima_kexec.c create mode 100644 drivers/of/of_ima.c -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel