From patchwork Wed Nov 15 12:31:08 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 10059305 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 43C2460231 for ; Wed, 15 Nov 2017 12:33:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3A2DA29F57 for ; Wed, 15 Nov 2017 12:33:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2F40F29F58; Wed, 15 Nov 2017 12:33:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C1FAD29F5A for ; Wed, 15 Nov 2017 12:33:11 +0000 (UTC) Received: from localhost ([::1]:35809 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEwsQ-00035r-TT for patchwork-qemu-devel@patchwork.kernel.org; Wed, 15 Nov 2017 07:33:10 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60765) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEwqo-000313-Fk for qemu-devel@nongnu.org; Wed, 15 Nov 2017 07:31:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eEwqk-0002An-IQ for qemu-devel@nongnu.org; Wed, 15 Nov 2017 07:31:30 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:53154) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eEwqk-0002AB-Aa for qemu-devel@nongnu.org; Wed, 15 Nov 2017 07:31:26 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vAFCTFL9052740 for ; Wed, 15 Nov 2017 07:31:20 -0500 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0a-001b2d01.pphosted.com with ESMTP id 2e8jdn9e9g-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 15 Nov 2017 07:31:20 -0500 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 15 Nov 2017 07:31:17 -0500 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vAFCVGvl37945400; Wed, 15 Nov 2017 12:31:16 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7B18FAE034; Wed, 15 Nov 2017 07:32:07 -0500 (EST) Received: from sbct-3.watson.ibm.com (unknown [9.47.158.153]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP id 65D29AE03B; Wed, 15 Nov 2017 07:32:07 -0500 (EST) From: Stefan Berger To: qemu-devel@nongnu.org Date: Wed, 15 Nov 2017 07:31:08 -0500 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1510749069-22059-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1510749069-22059-1-git-send-email-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 17111512-0024-0000-0000-000002F3463C X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008067; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000240; SDB=6.00946207; UDB=6.00477600; IPR=6.00726504; BA=6.00005691; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018028; XFM=3.00000015; UTC=2017-11-15 12:31:18 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17111512-0025-0000-0000-0000460A090A Message-Id: <1510749069-22059-4-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-11-15_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1711150172 X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-001b2d01.pphosted.com id vAFCTFL9052740 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PULL 3/4] tpm_tis: Return TPM_VERSION_UNSPEC in case of BE failure X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, marcandre.lureau@gmail.com, Stefan Berger Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP In case the backend has a failure, such as the tpm_emulator's CMD_INIT failing, the TIS goes into failure mode and does not respond to reads or writes to MMIO registers. In this case we need to prevent the ACPI table from being added and the straight-forward way is to indicate that there's no known TPM version being used. Signed-off-by: Stefan Berger Reviewed-by: Marc-André Lureau --- hw/tpm/tpm_tis.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 7402528..fec2fc6 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -1008,6 +1008,10 @@ TPMVersion tpm_tis_get_tpm_version(Object *obj) { TPMState *s = TPM(obj); + if (tpm_backend_had_startup_error(s->be_driver)) { + return TPM_VERSION_UNSPEC; + } + return tpm_backend_get_tpm_version(s->be_driver); }