From patchwork Thu Jun 11 09:10:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 11599599 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 758CB60D for ; Thu, 11 Jun 2020 09:11:25 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 55AC320760 for ; Thu, 11 Jun 2020 09:11:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 55AC320760 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kaod.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:59098 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjJF6-0002Sa-GH for patchwork-qemu-devel@patchwork.kernel.org; Thu, 11 Jun 2020 05:11:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52926) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjJE0-0000jm-8M for qemu-devel@nongnu.org; Thu, 11 Jun 2020 05:10:16 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:26527 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jjJDz-0008Ux-K2 for qemu-devel@nongnu.org; Thu, 11 Jun 2020 05:10:15 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-315-DfY-fTscMxWmNw7l3TAY_w-1; Thu, 11 Jun 2020 05:10:11 -0400 X-MC-Unique: DfY-fTscMxWmNw7l3TAY_w-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 04A86873092; Thu, 11 Jun 2020 09:10:10 +0000 (UTC) Received: from bahia.lan (ovpn-114-202.ams2.redhat.com [10.36.114.202]) by smtp.corp.redhat.com (Postfix) with ESMTP id CD08E60BF4; Thu, 11 Jun 2020 09:10:08 +0000 (UTC) Subject: [PATCH v2 3/3] spapr: Forbid nested KVM-HV in pre-power9 compat mode From: Greg Kurz To: David Gibson Date: Thu, 11 Jun 2020 11:10:08 +0200 Message-ID: <159186660803.48605.11792415961949917926.stgit@bahia.lan> In-Reply-To: <159186635896.48605.3457464705220760573.stgit@bahia.lan> References: <159186635896.48605.3457464705220760573.stgit@bahia.lan> User-Agent: StGit/0.21 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=207.211.31.120; envelope-from=groug@kaod.org; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 03:29:35 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Vladimir Sementsov-Ogievskiy , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Markus Armbruster Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Nested KVM-HV only works on POWER9. Signed-off-by: Greg Kurz Reviewed-by: Laurent Vivier --- hw/ppc/spapr_caps.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 2cb7ba8f005a..e86a7c350444 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -409,6 +409,8 @@ static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr, uint8_t val, Error **errp) { ERRP_AUTO_PROPAGATE(); + PowerPCCPU *cpu = POWERPC_CPU(first_cpu); + if (!val) { /* capability disabled by default */ return; @@ -418,6 +420,14 @@ static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr, error_setg(errp, "No Nested KVM-HV support in TCG"); error_append_hint(errp, "Try appending -machine cap-nested-hv=off\n"); } else if (kvm_enabled()) { + if (!ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0, + spapr->max_compat_pvr)) { + error_setg(errp, "Nested KVM-HV only supported on POWER9"); + error_append_hint(errp, + "Try appending -machine max-cpu-compat=power9\n"); + return; + } + if (!kvmppc_has_cap_nested_kvm_hv()) { error_setg(errp, "KVM implementation does not support Nested KVM-HV");