From patchwork Wed Mar 6 15:55:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 1908908 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=ixt6DFbe; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TqcTw5nynz1yX4 for ; Thu, 7 Mar 2024 02:55:48 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=ixt6DFbe; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4TqcTw1bhbz3d2W for ; Thu, 7 Mar 2024 02:55:48 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=ixt6DFbe; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=stefanb@linux.ibm.com; receiver=lists.ozlabs.org) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4TqcTc5RdJz3cgJ for ; Thu, 7 Mar 2024 02:55:32 +1100 (AEDT) Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 426FoaB7028094; Wed, 6 Mar 2024 15:55:20 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=dqXDU606IX7tPW6Aj3a3JGsIYTkiO0MyBca1qoCZcCw=; b=ixt6DFbeH98kWxhcMq/MF3KKTsQ7aShD0yrXy6Vcr2OSd8mRVy+d446vXRxaBmW/Q+7E d5TkXusNvytNvOqVP0AZlI8LAAWqz1ufOfFPce6l/7/mxEErFbvc9hYObB2OSbl3qswA q7F/tDUDC90uSRH+L+jEtaFNPLa3I24eA2Y7jspH70pyxKxL+Mdp2xVaFmQf+R/ytaSO ukvRWn0TmN63vzK5AICg5dQzeROW1us3HnDT1myYr60Cy5O2zE9GJURskT/Pcw+JefmI +NaWfHxGuN6LLl/AOV6qwWSiGf5k/0vque9BItqEuFxoRrwQpK4yi2yht8Au3IA+9Qsd tw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wptj8t6rq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Mar 2024 15:55:20 +0000 Received: from m0353729.ppops.net (m0353729.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 426FoqH2029694; Wed, 6 Mar 2024 15:55:19 GMT Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wptj8t6r9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Mar 2024 15:55:19 +0000 Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 426ExWth024185; Wed, 6 Mar 2024 15:55:18 GMT Received: from smtprelay04.wdc07v.mail.ibm.com ([172.16.1.71]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3wpjwsavju-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Mar 2024 15:55:18 +0000 Received: from smtpav04.dal12v.mail.ibm.com (smtpav04.dal12v.mail.ibm.com [10.241.53.103]) by smtprelay04.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 426FtEQx31326484 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 6 Mar 2024 15:55:17 GMT Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BB32A58065; Wed, 6 Mar 2024 15:55:14 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E32E58063; Wed, 6 Mar 2024 15:55:14 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 6 Mar 2024 15:55:14 +0000 (GMT) From: Stefan Berger To: mpe@ellerman.id.au, linux-integrity@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/2] Preserve TPM log across kexec Date: Wed, 6 Mar 2024 10:55:09 -0500 Message-ID: <20240306155511.974517-1-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: o_181VeA48Inz-Y-9-q8JknX23pZW9qR X-Proofpoint-ORIG-GUID: w52wozKT8c3wrcTE3WBlFdhPjZH18sFk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-06_10,2024-03-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxlogscore=861 clxscore=1011 bulkscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 phishscore=0 malwarescore=0 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2403060127 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: rnsastry@linux.ibm.com, linux-kernel@vger.kernel.org, jarkko@kernel.org, peterhuewe@gmx.de, viparash@in.ibm.com, Stefan Berger Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This series resolves an issue on PowerVM and KVM on Power where the memory the TPM log was held in may become inaccessible or corrupted after a kexec soft reboot. The solution on these two platforms is to store the whole log in the device tree because the device tree is preserved across a kexec with either of the two kexec syscalls. Regards, Stefan Stefan Berger (2): powerpc/prom_init: Replace linux,sml-base/sml-size with linux,sml-log tpm: of: If available Use linux,sml-log to get the log and its size arch/powerpc/kernel/prom_init.c | 8 ++------ drivers/char/tpm/eventlog/of.c | 36 ++++++++++----------------------- 2 files changed, 13 insertions(+), 31 deletions(-)