From patchwork Thu Sep 1 21:46:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12963231 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22468ECAAD3 for ; Thu, 1 Sep 2022 21:46:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233136AbiIAVqj (ORCPT ); Thu, 1 Sep 2022 17:46:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233250AbiIAVqi (ORCPT ); Thu, 1 Sep 2022 17:46:38 -0400 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19EE379A45; Thu, 1 Sep 2022 14:46:37 -0700 (PDT) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 281LUgSW031933; Thu, 1 Sep 2022 21:46:23 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding; s=pp1; bh=r2ZqQzsxMzMBvy51gRpn7fAMC1irQrpsOuT7QpcOflw=; b=Ket3w1/Aq7qOEsc1YWBmSvfDetKV0jycPNgjtk3WQz4+UqU9QmMUv2aY7WA9w2pHCekL wO0oTAuRi0TJNALLyyK9+8vfuOAWj20F2UsS+5D7XPsKaWI3WG/SEbT5aygf8que9ukB 5GUp+vkg8ka3NP9Hl4yvISnny3swTxU1LyF+rF07evkOPGS2C+MCbwHtU0/6eulxYlNp Pk00G4vRokI7ualg5vnFn418SdkAS1PmPLqVM59mqzSF7M96TtdAXVOPw4lh73yocgeQ HMTtznSqxXpH4uxnh/hpcr+7btmzBHJiXYsOiYiQCuGxkmV3qnzA9z5JPYnHJ2qrUH9E 8A== Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3jb4qg0h3e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 01 Sep 2022 21:46:23 +0000 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 281LaGBO019083; Thu, 1 Sep 2022 21:46:22 GMT Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by ppma02dal.us.ibm.com with ESMTP id 3j7awa4v52-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 01 Sep 2022 21:46:22 +0000 Received: from b03ledav006.gho.boulder.ibm.com (b03ledav006.gho.boulder.ibm.com [9.17.130.237]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 281LkL3S15860208 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 1 Sep 2022 21:46:21 GMT Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E35A5C6057; Thu, 1 Sep 2022 21:46:20 +0000 (GMT) Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5DE01C6055; Thu, 1 Sep 2022 21:46:20 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 1 Sep 2022 21:46:20 +0000 (GMT) From: Stefan Berger To: kexec@lists.infradead.org, devicetree@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: nayna@linux.ibm.com, nasastry@in.ibm.com, mpe@ellerman.id.au, Stefan Berger Subject: [PATCH v8 0/4] tpm: Preserve TPM measurement log across kexec (ppc64) Date: Thu, 1 Sep 2022 17:46:06 -0400 Message-Id: <20220901214610.768645-1-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: GsA1unPRsVQRw4jZ6R8Ro8Eu6KpIZ5_9 X-Proofpoint-GUID: GsA1unPRsVQRw4jZ6R8Ro8Eu6KpIZ5_9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-09-01_12,2022-08-31_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 mlxscore=0 lowpriorityscore=0 phishscore=0 clxscore=1011 priorityscore=1501 spamscore=0 suspectscore=0 malwarescore=0 mlxlogscore=757 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209010094 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org The of-tree subsystem does not currently preserve the IBM vTPM 1.2 and vTPM 2.0 measurement logs across a kexec on PowerVM and PowerKVM. This series fixes this for the kexec_file_load() syscall using the flattened device tree (fdt) to carry the TPM measurement log's buffer across kexec. Stefan v8: - Added Jarkko's, Coiby's, and Rob's tags - Rebase on v6.0-rc3 that absorbed 2 already upstreamed patches v7: - Added Nageswara's Tested-by tags - Added back original comment to inline function and removed Jarkko's R-b tag v6: - Add __init to get_kexec_buffer as suggested by Jonathan - Fixed issue detected by kernel test robot v5: - Rebased on 1 more patch that would otherwise create merge conflicts v4: - Rebased on 2 patches that would otherwise create merge conflicts; posting these patches in this series with several tags removed so krobot can test the series already - Changes to individual patches documented in patch descripitons v3: - Moved TPM Open Firmware related function to drivers/char/tpm/eventlog/tpm_of.c v2: - rearranged patches - fixed compilation issues for x86 Palmer Dabbelt (1): drivers: of: kexec ima: Support 32-bit platforms Stefan Berger (3): tpm: of: Make of-tree specific function commonly available of: kexec: Refactor IMA buffer related functions to make them reusable tpm/kexec: Duplicate TPM measurement log in of-tree for kexec drivers/char/tpm/eventlog/of.c | 31 +-- drivers/of/kexec.c | 336 ++++++++++++++++++++++++++++----- include/linux/kexec.h | 6 + include/linux/of.h | 9 +- include/linux/tpm.h | 36 ++++ kernel/kexec_file.c | 6 + 6 files changed, 346 insertions(+), 78 deletions(-) base-commit: b90cb1053190353cc30f0fef0ef1f378ccc063c5