From patchwork Wed Dec 9 17:00:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 11961963 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=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E7284C433FE for ; Wed, 9 Dec 2020 17:21:57 +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 69F8723C92 for ; Wed, 9 Dec 2020 17:21:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 69F8723C92 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35614 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kn3A4-0001WA-DA for qemu-devel@archiver.kernel.org; Wed, 09 Dec 2020 12:21:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:36440) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kn2q9-0006h9-SG for qemu-devel@nongnu.org; Wed, 09 Dec 2020 12:01:21 -0500 Received: from us-smtp-delivery-44.mimecast.com ([207.211.30.44]:50879) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kn2q0-0000pf-TZ for qemu-devel@nongnu.org; Wed, 09 Dec 2020 12:01:21 -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-575-9WOFJV-4PX2tqYjZCRBPng-1; Wed, 09 Dec 2020 12:00:57 -0500 X-MC-Unique: 9WOFJV-4PX2tqYjZCRBPng-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 42454803620; Wed, 9 Dec 2020 17:00:56 +0000 (UTC) Received: from bahia.redhat.com (ovpn-113-78.ams2.redhat.com [10.36.113.78]) by smtp.corp.redhat.com (Postfix) with ESMTP id 978535D6BA; Wed, 9 Dec 2020 17:00:54 +0000 (UTC) From: Greg Kurz To: qemu-devel@nongnu.org Subject: [PATCH 1/6] spapr: Add an "spapr" property to sPAPR CPU core Date: Wed, 9 Dec 2020 18:00:47 +0100 Message-Id: <20201209170052.1431440-2-groug@kaod.org> In-Reply-To: <20201209170052.1431440-1-groug@kaod.org> References: <20201209170052.1431440-1-groug@kaod.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=groug@kaod.org X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=207.211.30.44; envelope-from=groug@kaod.org; helo=us-smtp-delivery-44.mimecast.com X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no 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: qemu-ppc@nongnu.org, Greg Kurz , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The sPAPR CPU core device can only work with pseries machine types. This is currently checked in the realize function with a dynamic cast of qdev_get_machine(). Some other places also need to reach out to the machine using qdev_get_machine(). Make this dependency explicit by introducing an "spapr" link property which officialy points to the machine. This link is set by pseries machine types only in the pre-plug handler. This allows to drop some users of qdev_get_machine(). Signed-off-by: Greg Kurz --- include/hw/ppc/spapr_cpu_core.h | 2 ++ hw/ppc/spapr.c | 4 ++++ hw/ppc/spapr_cpu_core.c | 17 +++++++---------- 3 files changed, 13 insertions(+), 10 deletions(-) diff --git a/include/hw/ppc/spapr_cpu_core.h b/include/hw/ppc/spapr_cpu_core.h index dab3dfc76c0a..0969b29fd96c 100644 --- a/include/hw/ppc/spapr_cpu_core.h +++ b/include/hw/ppc/spapr_cpu_core.h @@ -10,6 +10,7 @@ #define HW_SPAPR_CPU_CORE_H #include "hw/cpu/core.h" +#include "hw/ppc/spapr.h" #include "hw/qdev-core.h" #include "target/ppc/cpu-qom.h" #include "target/ppc/cpu.h" @@ -24,6 +25,7 @@ OBJECT_DECLARE_TYPE(SpaprCpuCore, SpaprCpuCoreClass, struct SpaprCpuCore { /*< private >*/ CPUCore parent_obj; + SpaprMachineState *spapr; /*< public >*/ PowerPCCPU **threads; diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index d1dcf3ab2c94..4cc51723c62e 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3816,6 +3816,10 @@ static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, int index; unsigned int smp_threads = machine->smp.threads; + /* Required by spapr_cpu_core_realize() */ + object_property_set_link(OBJECT(dev), "spapr", OBJECT(hotplug_dev), + &error_abort); + if (dev->hotplugged && !mc->has_hotpluggable_cpus) { error_setg(errp, "CPU hotplug not supported for this machine"); return; diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c index 2f7dc3c23ded..dec09367e4a0 100644 --- a/hw/ppc/spapr_cpu_core.c +++ b/hw/ppc/spapr_cpu_core.c @@ -25,14 +25,13 @@ #include "sysemu/hw_accel.h" #include "qemu/error-report.h" -static void spapr_reset_vcpu(PowerPCCPU *cpu) +static void spapr_reset_vcpu(PowerPCCPU *cpu, SpaprMachineState *spapr) { CPUState *cs = CPU(cpu); CPUPPCState *env = &cpu->env; PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); target_ulong lpcr; - SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); cpu_reset(cs); @@ -186,7 +185,7 @@ static void spapr_unrealize_vcpu(PowerPCCPU *cpu, SpaprCpuCore *sc) if (!sc->pre_3_0_migration) { vmstate_unregister(NULL, &vmstate_spapr_cpu_state, cpu->machine_data); } - spapr_irq_cpu_intc_destroy(SPAPR_MACHINE(qdev_get_machine()), cpu); + spapr_irq_cpu_intc_destroy(sc->spapr, cpu); qdev_unrealize(DEVICE(cpu)); } @@ -200,7 +199,7 @@ static void spapr_cpu_core_reset(DeviceState *dev) int i; for (i = 0; i < cc->nr_threads; i++) { - spapr_reset_vcpu(sc->threads[i]); + spapr_reset_vcpu(sc->threads[i], sc->spapr); } } @@ -314,16 +313,12 @@ err: static void spapr_cpu_core_realize(DeviceState *dev, Error **errp) { - /* We don't use SPAPR_MACHINE() in order to exit gracefully if the user - * tries to add a sPAPR CPU core to a non-pseries machine. - */ - SpaprMachineState *spapr = - (SpaprMachineState *) object_dynamic_cast(qdev_get_machine(), - TYPE_SPAPR_MACHINE); SpaprCpuCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); + SpaprMachineState *spapr = sc->spapr; CPUCore *cc = CPU_CORE(OBJECT(dev)); int i; + /* Set in spapr_core_pre_plug() */ if (!spapr) { error_setg(errp, TYPE_SPAPR_CPU_CORE " needs a pseries machine"); return; @@ -345,6 +340,8 @@ static Property spapr_cpu_core_properties[] = { DEFINE_PROP_INT32("node-id", SpaprCpuCore, node_id, CPU_UNSET_NUMA_NODE_ID), DEFINE_PROP_BOOL("pre-3.0-migration", SpaprCpuCore, pre_3_0_migration, false), + DEFINE_PROP_LINK("spapr", SpaprCpuCore, spapr, TYPE_SPAPR_MACHINE, + SpaprMachineState *), DEFINE_PROP_END_OF_LIST() };