From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C43EC07E9B for ; Mon, 19 Jul 2021 12:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E2CC6113E for ; Mon, 19 Jul 2021 12:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236690AbhGSLy0 (ORCPT ); Mon, 19 Jul 2021 07:54:26 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:12570 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231388AbhGSLyZ (ORCPT ); Mon, 19 Jul 2021 07:54:25 -0400 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 16JCXkaJ119961; Mon, 19 Jul 2021 08:34:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=2wMrOmOaMfVeFVX7tNb5AIsXI9mO7cENkLTsH3g4nNE=; b=PsE7PE+B6AVN4YkQYybLkXpNnK/T2zYj/pZLzMdefyOxY3TklaXLwV6RVQs3aSvn76M5 75tUCUSg9pfTZEMhlxXeeATHLKtWyOotsMYnBNqQu2xE9SG10k4wpldTdFkEoGKJ9Cck /o220vZnKSfsLb/Szo4HQ1FO7UT7ZRZA8mMRDbSuoDbEb3fUcvxcEs4CdOxysvXd9oAV 8R3U6tS6Bzvpe56NmbZlHS1+8pmQSui9XEBb+DcWYWcr/YZzEW5OXO5iqEAsakkRdOvd EAsR7HSuSEb9DdI0HdHJKcdOYej/prWQx7bixC/Oig4B9SPEKnGxcNItbB9+m4Dzv6i9 JQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 39w7ykugej-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Jul 2021 08:34:55 -0400 Received: from m0127361.ppops.net (m0127361.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 16JCXll3119999; Mon, 19 Jul 2021 08:34:54 -0400 Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0a-001b2d01.pphosted.com with ESMTP id 39w7ykugdx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Jul 2021 08:34:54 -0400 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 16JCSs1a031965; Mon, 19 Jul 2021 12:34:53 GMT Received: from b01cxnp23033.gho.pok.ibm.com (b01cxnp23033.gho.pok.ibm.com [9.57.198.28]) by ppma02dal.us.ibm.com with ESMTP id 39vuk3x47p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Jul 2021 12:34:53 +0000 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 16JCYqi936372798 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 19 Jul 2021 12:34:52 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A395812405A; Mon, 19 Jul 2021 12:34:52 +0000 (GMT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E9197124054; Mon, 19 Jul 2021 12:34:48 +0000 (GMT) Received: from [9.65.195.237] (unknown [9.65.195.237]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP; Mon, 19 Jul 2021 12:34:48 +0000 (GMT) Subject: Re: [RFC PATCH 4/6] i386/sev: add the SNP launch start context To: Brijesh Singh , qemu-devel@nongnu.org Cc: Connor Kuehl , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , "Michael S . Tsirkin" , James Bottomley , "Dr . David Alan Gilbert" , Tom Lendacky , Paolo Bonzini , David Gibson , =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= , kvm@vger.kernel.org, Michael Roth , Eduardo Habkost , Dov Murik References: <20210709215550.32496-1-brijesh.singh@amd.com> <20210709215550.32496-5-brijesh.singh@amd.com> From: Dov Murik Message-ID: Date: Mon, 19 Jul 2021 15:34:47 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20210709215550.32496-5-brijesh.singh@amd.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: mzMUnhXLv0GHVr23VtPdoX38i_7122-u X-Proofpoint-ORIG-GUID: wwY5Lok3vEV7-sSpUstUjp4CpIrosZSa X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-07-19_05:2021-07-19,2021-07-19 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 impostorscore=0 mlxscore=0 phishscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107190072 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hi Brijesh, On 10/07/2021 0:55, Brijesh Singh wrote: > The SNP_LAUNCH_START is called first to create a cryptographic launch > context within the firmware. > > Signed-off-by: Brijesh Singh > --- > target/i386/sev.c | 30 +++++++++++++++++++++++++++++- > target/i386/trace-events | 1 + > 2 files changed, 30 insertions(+), 1 deletion(-) > > diff --git a/target/i386/sev.c b/target/i386/sev.c > index 84ae244af0..259408a8f1 100644 > --- a/target/i386/sev.c > +++ b/target/i386/sev.c > @@ -812,6 +812,29 @@ sev_read_file_base64(const char *filename, guchar **data, gsize *len) > return 0; > } > > +static int > +sev_snp_launch_start(SevGuestState *sev) > +{ > + int ret = 1; > + int fw_error, rc; > + struct kvm_sev_snp_launch_start *start = &sev->snp_config.start; > + > + trace_kvm_sev_snp_launch_start(start->policy); > + > + rc = sev_ioctl(sev->sev_fd, KVM_SEV_SNP_LAUNCH_START, start, &fw_error); > + if (rc < 0) { > + error_report("%s: SNP_LAUNCH_START ret=%d fw_error=%d '%s'", > + __func__, ret, fw_error, fw_error_to_str(fw_error)); Did you mean to report the value of ret or rc? > + goto out; Suggestion: Remove the `ret` variable. Here: simply `return 1`. At the end: remove the `out:` label; simply `return 0`. > + } > + > + sev_set_guest_state(sev, SEV_STATE_LAUNCH_UPDATE); > + ret = 0; > + > +out: > + return ret; > +} > + > static int > sev_launch_start(SevGuestState *sev) > { > @@ -1105,7 +1128,12 @@ int sev_kvm_init(ConfidentialGuestSupport *cgs, Error **errp) > goto err; > } > > - ret = sev_launch_start(sev); > + if (sev_snp_enabled()) { > + ret = sev_snp_launch_start(sev); > + } else { > + ret = sev_launch_start(sev); > + } > + > if (ret) { > error_setg(errp, "%s: failed to create encryption context", __func__); > goto err; > diff --git a/target/i386/trace-events b/target/i386/trace-events > index 2cd8726eeb..18cc14b956 100644 > --- a/target/i386/trace-events > +++ b/target/i386/trace-events > @@ -11,3 +11,4 @@ kvm_sev_launch_measurement(const char *value) "data %s" > kvm_sev_launch_finish(void) "" > kvm_sev_launch_secret(uint64_t hpa, uint64_t hva, uint64_t secret, int len) "hpa 0x%" PRIx64 " hva 0x%" PRIx64 " data 0x%" PRIx64 " len %d" > kvm_sev_attestation_report(const char *mnonce, const char *data) "mnonce %s data %s" > +kvm_sev_snp_launch_start(uint64_t policy) "policy 0x%" PRIx64 >