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Fri, 29 Jan 2021 17:41:39 +0000 Date: Fri, 29 Jan 2021 11:41:35 -0600 From: Venu Busireddy To: Tom Lendacky Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Marcel Apfelbaum , Paolo Bonzini , "Dr. David Alan Gilbert" , Eduardo Habkost , Richard Henderson , Connor Kuehl , Brijesh Singh , Jiri Slaby , Marcelo Tosatti , "Michael S. Tsirkin" , Sean Christopherson , Richard Henderson Subject: Re: [PATCH v6 2/6] sev/i386: Require in-kernel irqchip support for SEV-ES guests Message-ID: <20210129174135.GB231819@dt> References: Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Originating-IP: [209.17.40.36] X-ClientProxiedBy: CH2PR02CA0022.namprd02.prod.outlook.com (2603:10b6:610:4e::32) To DM5PR10MB2044.namprd10.prod.outlook.com (2603:10b6:3:110::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from dt (209.17.40.36) by CH2PR02CA0022.namprd02.prod.outlook.com (2603:10b6:610:4e::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3805.17 via Frontend Transport; Fri, 29 Jan 2021 17:41:37 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 55e0d83c-94b2-40ea-ba19-08d8c47d21c5 X-MS-TrafficTypeDiagnostic: DM6PR10MB3018: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:989; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; 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This > lessens the Qemu support burden required to boot APs. > > Cc: Paolo Bonzini > Cc: Richard Henderson > Cc: Eduardo Habkost > Reviewed-by: Dr. David Alan Gilbert > Signed-off-by: Tom Lendacky Reviewed-by: Venu Busireddy > --- > target/i386/sev.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/target/i386/sev.c b/target/i386/sev.c > index fce2128c07..ddec7ebaa7 100644 > --- a/target/i386/sev.c > +++ b/target/i386/sev.c > @@ -776,6 +776,12 @@ sev_guest_init(const char *id) > sev->api_minor = status.api_minor; > > if (sev_es_enabled()) { > + if (!kvm_kernel_irqchip_allowed()) { > + error_report("%s: SEV-ES guests require in-kernel irqchip support", > + __func__); > + goto err; > + } > + > if (!(status.flags & SEV_STATUS_FLAGS_CONFIG_ES)) { > error_report("%s: guest policy requires SEV-ES, but " > "host SEV-ES support unavailable", > -- > 2.30.0 >