From nobody Tue Nov 4 18:40:35 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1530603570265254.87511845582958; Tue, 3 Jul 2018 00:39:30 -0700 (PDT) Received: from localhost ([::1]:38586 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1faFuL-0004fd-H0 for importer@patchew.org; Tue, 03 Jul 2018 03:39:29 -0400 Received: from eggs.gnu.org ([208.118.235.92]:54071) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1faFk7-0005EW-SL for qemu-devel@nongnu.org; Tue, 03 Jul 2018 03:31:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1faFh0-0001mT-2A for qemu-devel@nongnu.org; Tue, 03 Jul 2018 03:28:55 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:37094 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1faFbx-00054m-2l; Tue, 03 Jul 2018 03:20:29 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 36B654075279; Tue, 3 Jul 2018 07:20:28 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-71.ams2.redhat.com [10.36.116.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id 45AA71C5A3; Tue, 3 Jul 2018 07:20:26 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, shameerali.kolothum.thodi@huawei.com, imammedo@redhat.com, david@redhat.com Date: Tue, 3 Jul 2018 09:19:47 +0200 Message-Id: <1530602398-16127-5-git-send-email-eric.auger@redhat.com> In-Reply-To: <1530602398-16127-1-git-send-email-eric.auger@redhat.com> References: <1530602398-16127-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Tue, 03 Jul 2018 07:20:28 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Tue, 03 Jul 2018 07:20:28 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eric.auger@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC v3 04/15] hw/arm/virt: support kvm_type property X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wei@redhat.com, drjones@redhat.com, david@gibson.dropbear.id.au, dgilbert@redhat.com, agraf@suse.de Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The kvm-type property currently is used to pass a user parameter to KVM_CREATE_VM. This matches the way KVM/ARM expects to pass the max_vm_phys_shift parameter. This patch adds the support or the kvm-type property in machvirt and also implements the machine class kvm_type() callback so that it either returns the kvm-type value provided by the user or returns the max_vm_phys_shift exposed by KVM. for instance, the usespace can use the following option to instantiate a 42b IPA guest: -machine kvm-type=3D42 Signed-off-by: Eric Auger --- hw/arm/virt.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ include/hw/arm/virt.h | 1 + 2 files changed, 45 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 281ddcd..04a32de 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1649,6 +1649,21 @@ static void virt_set_iommu(Object *obj, const char *= value, Error **errp) } } =20 +static char *virt_get_kvm_type(Object *obj, Error **errp) +{ + VirtMachineState *vms =3D VIRT_MACHINE(obj); + + return g_strdup(vms->kvm_type); +} + +static void virt_set_kvm_type(Object *obj, const char *value, Error **errp) +{ + VirtMachineState *vms =3D VIRT_MACHINE(obj); + + g_free(vms->kvm_type); + vms->kvm_type =3D g_strdup(value); +} + static CpuInstanceProperties virt_cpu_index_to_props(MachineState *ms, unsigned cpu_index) { @@ -1710,6 +1725,31 @@ static HotplugHandler *virt_machine_get_hotplug_hand= ler(MachineState *machine, return NULL; } =20 +static int virt_kvm_type(MachineState *ms, const char *type_str) +{ + int max_vm_phys_shift, ret =3D 0; + uint64_t type; + + if (!type_str) { + max_vm_phys_shift =3D kvm_arm_get_max_vm_phys_shift(ms); + if (max_vm_phys_shift < 0) { + goto out; + } + } else { + type =3D g_ascii_strtoll(type_str, NULL, 0); + type &=3D 0xFF; + max_vm_phys_shift =3D (int)type; + if (max_vm_phys_shift < 40 || max_vm_phys_shift > 52) { + warn_report("valid kvm-type type values are within [40, 52]:" + " option is ignored and VM is created with 40b IPA= "); + goto out; + } + } + ret =3D max_vm_phys_shift; +out: + return ret; +} + static void virt_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc =3D MACHINE_CLASS(oc); @@ -1733,6 +1773,7 @@ static void virt_machine_class_init(ObjectClass *oc, = void *data) mc->cpu_index_to_instance_props =3D virt_cpu_index_to_props; mc->default_cpu_type =3D ARM_CPU_TYPE_NAME("cortex-a15"); mc->get_default_cpu_node_id =3D virt_get_default_cpu_node_id; + mc->kvm_type =3D virt_kvm_type; assert(!mc->get_hotplug_handler); mc->get_hotplug_handler =3D virt_machine_get_hotplug_handler; hc->plug =3D virt_machine_device_plug_cb; @@ -1826,6 +1867,9 @@ static void virt_3_0_instance_init(Object *obj) "Valid values are none and smmuv3", NULL); =20 + object_property_add_str(obj, "kvm-type", + virt_get_kvm_type, virt_set_kvm_type, NULL); + vms->memmap =3D a15memmap; vms->irqmap =3D a15irqmap; } diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 9a870cc..1a90ffc 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -124,6 +124,7 @@ typedef struct { uint32_t msi_phandle; uint32_t iommu_phandle; int psci_conduit; + char *kvm_type; } VirtMachineState; =20 #define VIRT_ECAM_ID(high) (high ? VIRT_PCIE_ECAM_HIGH : VIRT_PCIE_ECAM) --=20 2.5.5