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=-4.0 required=3.0 tests=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 D975DC4CEC5 for ; Fri, 13 Sep 2019 22:50:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B23042089F for ; Fri, 13 Sep 2019 22:50:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404197AbfIMWuR (ORCPT ); Fri, 13 Sep 2019 18:50:17 -0400 Received: from linux.microsoft.com ([13.77.154.182]:46632 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404114AbfIMWuR (ORCPT ); Fri, 13 Sep 2019 18:50:17 -0400 Received: from prsriva-Precision-Tower-5810.corp.microsoft.com (unknown [167.220.2.18]) by linux.microsoft.com (Postfix) with ESMTPSA id E945020B7186; Fri, 13 Sep 2019 15:50:15 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com E945020B7186 From: Prakhar Srivastava To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-integrity@vger.kernel.org, kexec@lists.infradead.org Cc: arnd@arndb.de, jean-philippe@linaro.org, allison@lohutok.net, kristina.martsenko@arm.org, yamada.masahiro@socionext.com, duwe@lst.de, mark.rutland@arm.com, tglx@linutronix.de, takahiro.akashi@linaro.org, james.morse@arm.org, catalin.marinas@arm.com, sboyd@kernel.org, bauerman@linux.ibm.com, zohar@linux.ibm.com Subject: [RFC PATCH v1 0/1] Add support for arm64 to carry ima measurement log in kexec_file_load Date: Fri, 13 Sep 2019 15:50:08 -0700 Message-Id: <20190913225009.3406-1-prsriva@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for arm64 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. Changelog: 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 (1): Add support for arm64 to carry ima measurement log in kexec_file_load arch/arm64/Kconfig | 7 + arch/arm64/include/asm/ima.h | 29 ++++ arch/arm64/include/asm/kexec.h | 5 + arch/arm64/kernel/Makefile | 3 +- arch/arm64/kernel/ima_kexec.c | 213 +++++++++++++++++++++++++ arch/arm64/kernel/machine_kexec_file.c | 6 + 6 files changed, 262 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/include/asm/ima.h create mode 100644 arch/arm64/kernel/ima_kexec.c -- 2.17.1