From patchwork Tue Apr 18 13:44:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 674668 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 BBA38C77B75 for ; Tue, 18 Apr 2023 13:44:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230023AbjDRNoT (ORCPT ); Tue, 18 Apr 2023 09:44:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58360 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231892AbjDRNoS (ORCPT ); Tue, 18 Apr 2023 09:44:18 -0400 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E28BD86B6; Tue, 18 Apr 2023 06:44:14 -0700 (PDT) Received: from pps.filterd (m0353722.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33IDG74s012838; Tue, 18 Apr 2023 13:44:14 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=3rTxPXcrDEqRa/DaBHbZhPe1zpvsDR1Y31o1ZvJjF3s=; b=cwpLlpRCIH9kcNaFoDBJilVOnpiAWFvWxJEO8D6qQjW1yFy7604PuDFE/fhKsjkC9Xmh KAOdmKnjk60hUCkXgGXRKyCW12vWiIS0n4p97Ut4gujiJULcNsS2NbNjT/NFui/UsBcP qzZfQifUGxLFgYHEkowMjV7Ckje1s0vYmyvItK1Qa56F92sKtb2bQu3i2FWUJKV3VJag 2Eh5Z2WVJlNvxdQu9HGccEWkLxuR9JLxcQtucQCAvVLuj0cqI905Iq4s1sUeMc0B0kuM d3TOYGAX9MMxvaktOU7UREMNdasQ6ePFSn+6fz4TsV/q7aYoLNhmwCWH/1anUhk3148B rg== Received: from ppma04wdc.us.ibm.com (1a.90.2fa9.ip4.static.sl-reverse.com [169.47.144.26]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3q1q35a8qm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Apr 2023 13:44:13 +0000 Received: from pps.filterd (ppma04wdc.us.ibm.com [127.0.0.1]) by ppma04wdc.us.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 33ICSkMv012039; Tue, 18 Apr 2023 13:44:13 GMT Received: from smtprelay03.wdc07v.mail.ibm.com ([9.208.129.113]) by ppma04wdc.us.ibm.com (PPS) with ESMTPS id 3pykj7967f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Apr 2023 13:44:13 +0000 Received: from smtpav01.wdc07v.mail.ibm.com (smtpav01.wdc07v.mail.ibm.com [10.39.53.228]) by smtprelay03.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 33IDiBoJ27525774 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 18 Apr 2023 13:44:12 GMT Received: from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E74F558059; Tue, 18 Apr 2023 13:44:11 +0000 (GMT) Received: from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1351D58055; Tue, 18 Apr 2023 13:44:11 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by smtpav01.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 18 Apr 2023 13:44:10 +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 v9 0/4] tpm: Preserve TPM measurement log across kexec (ppc64) Date: Tue, 18 Apr 2023 09:44:05 -0400 Message-Id: <20230418134409.177485-1-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: VbtAIg_lLbzpMzY2eBe8yJ8mzsDB6Cdp X-Proofpoint-ORIG-GUID: VbtAIg_lLbzpMzY2eBe8yJ8mzsDB6Cdp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-18_09,2023-04-18_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 adultscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 mlxlogscore=696 bulkscore=0 phishscore=0 mlxscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304180118 Precedence: bulk List-ID: X-Mailing-List: devicetree@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 v9: - 2/4: Rebased on 6.3-rc7: call tpm_read_log_memory_region if -ENODEV returned 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 | 30 +-- drivers/of/kexec.c | 336 ++++++++++++++++++++++++++++----- include/linux/kexec.h | 6 + include/linux/of.h | 6 + include/linux/tpm.h | 36 ++++ kernel/kexec_file.c | 6 + 6 files changed, 344 insertions(+), 76 deletions(-) base-commit: 6a8f57ae2eb07ab39a6f0ccad60c760743051026