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Fri, 04 Dec 2020 12:11:43 -0500 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-496-sitmlEVNNOmRApR390Z48w-1; Fri, 04 Dec 2020 12:09:57 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 84092C7401; Fri, 4 Dec 2020 17:09:56 +0000 (UTC) Received: from dell-r430-03.lab.eng.brq.redhat.com (dell-r430-03.lab.eng.brq.redhat.com [10.37.153.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 89BC119630; Fri, 4 Dec 2020 17:09:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607101799; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NbPKOJFLjelxVZRXIiuFYnqLQBRH5A40D62dQ0hRETY=; b=SfGLUit7MYjUcSZK0DIYddkpeLXt4uYnq7HiNBXn/Wm7lMsep1FVaxSi5YK2dgybnZyW9Y AfI+6Decw34ZTZeVShV/nN+ULP2XtzRc6pUCrBe1HOHi7vrdKsV3z1sshYxkeRZodlVrld 4TuAp0mhUeBRjrTs871B9P0qXIDmFow= X-MC-Unique: sitmlEVNNOmRApR390Z48w-1 From: Igor Mammedov To: qemu-devel@nongnu.org Subject: [PATCH 8/8] x86: ich9: let firmware negotiate 'CPU hot-unplug with SMI' feature Date: Fri, 4 Dec 2020 12:09:39 -0500 Message-Id: <20201204170939.1815522-9-imammedo@redhat.com> In-Reply-To: <20201204170939.1815522-1-imammedo@redhat.com> References: <20201204170939.1815522-1-imammedo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.496, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no 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: lersek@redhat.com, ankur.a.arora@oracle.com, mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Keep CPU hotunplug with SMI disabled on 5.2 and older and enable it by default on newer machine types. Signed-off-by: Igor Mammedov --- v1: - ensure that unplug can't be enabled without hotplug (Laszlo) --- hw/i386/pc.c | 4 +++- hw/isa/lpc_ich9.c | 8 +++++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 781523684c..6476d8d853 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -97,7 +97,9 @@ #include "trace.h" #include CONFIG_DEVICES =20 -GlobalProperty pc_compat_5_2[] =3D {}; +GlobalProperty pc_compat_5_2[] =3D { + { "ICH9-LPC", "x-smi-cpu-hotunplug", "off" }, +}; const size_t pc_compat_5_2_len =3D G_N_ELEMENTS(pc_compat_5_2); =20 GlobalProperty pc_compat_5_1[] =3D { diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c index da80430144..d3145bf014 100644 --- a/hw/isa/lpc_ich9.c +++ b/hw/isa/lpc_ich9.c @@ -392,6 +392,12 @@ static void smi_features_ok_callback(void *opaque) return; } =20 + if (guest_cpu_hotplug_features =3D=3D + BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)) { + /* cpu hot-unplug is unsupported without cpu-hotplug */ + return; + } + /* valid feature subset requested, lock it down, report success */ lpc->smi_negotiated_features =3D guest_features; lpc->smi_features_ok =3D 1; @@ -774,7 +780,7 @@ static Property ich9_lpc_properties[] =3D { DEFINE_PROP_BIT64("x-smi-cpu-hotplug", ICH9LPCState, smi_host_features, ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT, true), DEFINE_PROP_BIT64("x-smi-cpu-hotunplug", ICH9LPCState, smi_host_featur= es, - ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT, false), + ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT, true), DEFINE_PROP_END_OF_LIST(), }; =20 --=20 2.27.0