From patchwork Tue Feb 27 14:28:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Krowiak X-Patchwork-Id: 10245487 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 E8E0D60362 for ; Tue, 27 Feb 2018 14:30:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DA7E22891C for ; Tue, 27 Feb 2018 14:30:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDE7E28926; Tue, 27 Feb 2018 14:30:11 +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 vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C43A726220 for ; Tue, 27 Feb 2018 14:30:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753564AbeB0OaJ (ORCPT ); Tue, 27 Feb 2018 09:30:09 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:33368 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753553AbeB0OaH (ORCPT ); Tue, 27 Feb 2018 09:30:07 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1RETv1a160647 for ; Tue, 27 Feb 2018 09:30:06 -0500 Received: from e38.co.us.ibm.com (e38.co.us.ibm.com [32.97.110.159]) by mx0b-001b2d01.pphosted.com with ESMTP id 2gd7fg54e2-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 27 Feb 2018 09:30:04 -0500 Received: from localhost by e38.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 27 Feb 2018 07:28:32 -0700 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1RESVe711403580; Tue, 27 Feb 2018 07:28:31 -0700 Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 803767805C; Tue, 27 Feb 2018 07:28:31 -0700 (MST) Received: from localhost.localdomain (unknown [9.60.75.238]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTPS id B246678041; Tue, 27 Feb 2018 07:28:29 -0700 (MST) From: Tony Krowiak To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: freude@de.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, cohuck@redhat.com, kwankhede@nvidia.com, bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com, alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com, alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com, jjherne@linux.vnet.ibm.com, thuth@redhat.com, pasic@linux.vnet.ibm.com, fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com, Tony Krowiak Subject: [PATCH v2 03/15] s390: zcrypt: externalize AP instructions available function Date: Tue, 27 Feb 2018 09:28:01 -0500 X-Mailer: git-send-email 1.7.1 In-Reply-To: <1519741693-17440-1-git-send-email-akrowiak@linux.vnet.ibm.com> References: <1519741693-17440-1-git-send-email-akrowiak@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18022714-0028-0000-0000-0000093B1DA0 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008601; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.00995862; UDB=6.00506230; IPR=6.00775186; MB=3.00019761; MTD=3.00000008; XFM=3.00000015; UTC=2018-02-27 14:28:35 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022714-0029-0000-0000-000039C4BF50 Message-Id: <1519741693-17440-4-git-send-email-akrowiak@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-27_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 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-1802270183 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If the AP instructions are not available on the linux host, then AP devices can not be interpreted by the SIE. The AP bus has a function it uses to determine if the AP instructions are available. This patch provides a new function that wraps the AP bus's function to externalize it for use by KVM. Signed-off-by: Tony Krowiak Reviewed-by: Pierre Morel Reviewed-by: Harald Freudenberger --- arch/s390/include/asm/ap.h | 7 +++++++ drivers/s390/crypto/ap_bus.c | 6 ++++++ 2 files changed, 13 insertions(+), 0 deletions(-) diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index cfce683..1df6b59 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -120,4 +120,11 @@ struct ap_queue_status ap_queue_irq_ctrl(ap_qid_t qid, struct ap_qirq_ctrl qirqctrl, void *ind); +/** + * ap_instructions_installed() - Tests whether AP instructions are installed + * + * Returns 1 if the AP instructions are installed, otherwise; returns 0 + */ +int ap_instructions_installed(void); + #endif /* _ASM_S390_AP_H_ */ diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 48d55dc..089b1cf 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -211,6 +211,12 @@ int ap_query_configuration(struct ap_config_info *info) } EXPORT_SYMBOL(ap_query_configuration); +int ap_instructions_installed(void) +{ + return (ap_instructions_available() == 0); +} +EXPORT_SYMBOL(ap_instructions_installed); + /** * ap_init_configuration(): Allocate and query configuration array. */