From patchwork Fri Feb 19 04:03:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Rosato X-Patchwork-Id: 8356081 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F048DC0553 for ; Fri, 19 Feb 2016 04:06:12 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 56F84203F1 for ; Fri, 19 Feb 2016 04:06:12 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 699D7203F3 for ; Fri, 19 Feb 2016 04:06:11 +0000 (UTC) Received: from localhost ([::1]:48196 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWcKY-00063j-O6 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 18 Feb 2016 23:06:10 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57377) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWcIO-0001Gc-34 for qemu-devel@nongnu.org; Thu, 18 Feb 2016 23:04:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aWcIJ-0007Os-C8 for qemu-devel@nongnu.org; Thu, 18 Feb 2016 23:03:56 -0500 Received: from e37.co.us.ibm.com ([32.97.110.158]:42375) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWcIJ-0007Oh-5k for qemu-devel@nongnu.org; Thu, 18 Feb 2016 23:03:51 -0500 Received: from localhost by e37.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 18 Feb 2016 21:03:48 -0700 X-IBM-Helo: d03dlp02.boulder.ibm.com X-IBM-MailFrom: mjrosato@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b01cxnp23033.gho.pok.ibm.com (b01cxnp23033.gho.pok.ibm.com [9.57.198.28]) by d03dlp02.boulder.ibm.com (Postfix) with ESMTP id 4A0FC3E40044 for ; Thu, 18 Feb 2016 21:03:48 -0700 (MST) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u1J43l3H33423452 for ; Fri, 19 Feb 2016 04:03:47 GMT Received: from d01av04.pok.ibm.com (localhost [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u1J43l2M019930 for ; Thu, 18 Feb 2016 23:03:47 -0500 Received: from rosatomj-ThinkPad-W530.ibm.com (sig-9-65-86-239.ibm.com [9.65.86.239]) by d01av04.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u1J43cPR018988; Thu, 18 Feb 2016 23:03:46 -0500 From: Matthew Rosato To: qemu-devel@nongnu.org Date: Thu, 18 Feb 2016 23:03:37 -0500 Message-Id: <1455854617-30964-7-git-send-email-mjrosato@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1455854617-30964-1-git-send-email-mjrosato@linux.vnet.ibm.com> References: <1455854617-30964-1-git-send-email-mjrosato@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16021904-0025-0000-0000-00002184E020 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 32.97.110.158 Cc: dahi@linux.vnet.ibm.com, agraf@suse.de, borntraeger@de.ibm.com, imammedo@redhat.com, bharata@linux.vnet.ibm.com, cornelia.huck@de.ibm.com, pbonzini@redhat.com, afaerber@suse.de, rth@twiddle.net Subject: [Qemu-devel] [PATCH v5 6/6] s390x/cpu: Allow hotplug of CPUs X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement cpu hotplug routine and add the machine hook. Signed-off-by: Matthew Rosato --- hw/s390x/s390-virtio-ccw.c | 1 + target-s390x/cpu.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ target-s390x/cpu.h | 1 + 3 files changed, 47 insertions(+) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 31c1082..3be41ee 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -199,6 +199,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data) mc->init = ccw_init; mc->reset = s390_machine_reset; + mc->hot_add_cpu = s390_hot_add_cpu; mc->block_default_type = IF_VIRTIO; mc->no_cdrom = 1; mc->no_floppy = 1; diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c index 8dfd063..99394ec 100644 --- a/target-s390x/cpu.c +++ b/target-s390x/cpu.c @@ -32,6 +32,12 @@ #include "trace.h" #ifndef CONFIG_USER_ONLY #include "sysemu/arch_init.h" +#include "sysemu/sysemu.h" +#include "hw/boards.h" +#include "hw/s390x/sclp.h" +#include "qom/cpu.h" + +#define last_cpu QTAILQ_LAST(&cpus, CPUTailQ) #endif #define CR0_RESET 0xE0UL @@ -211,6 +217,12 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp) #endif scc->parent_realize(dev, errp); + +#if !defined(CONFIG_USER_ONLY) + if (dev->hotplugged) { + raise_irq_cpu_hotplug(); + } +#endif } static void s390_cpu_initfn(Object *obj) @@ -254,6 +266,39 @@ static void s390_cpu_finalize(Object *obj) } #if !defined(CONFIG_USER_ONLY) +void s390_hot_add_cpu(const int64_t id, Error **errp) +{ + MachineState *machine = MACHINE(qdev_get_machine()); + + if (id < 0) { + error_setg(errp, "Invalid CPU id: %" PRIi64, id); + return; + } + + if (cpu_exists(id)) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", it already exists", id); + return; + } + + if (id >= max_cpus) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", max allowed: %d", id, max_cpus - 1); + return; + } + + if (id != (last_cpu->cpu_index + 1)) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", The next available id is %d", id, + (last_cpu->cpu_index + 1)); + return; + } + + cpu_s390x_init(machine->cpu_model); +} +#endif + +#if !defined(CONFIG_USER_ONLY) static bool disabled_wait(CPUState *cpu) { return cpu->halted && !(S390_CPU(cpu)->env.psw.mask & diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 06ca60b..cf1e2bd 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -541,6 +541,7 @@ static inline uint8_t s390_cpu_get_state(S390CPU *cpu) void gtod_save(QEMUFile *f, void *opaque); int gtod_load(QEMUFile *f, void *opaque, int version_id); +void s390_hot_add_cpu(const int64_t id, Error **errp); /* service interrupts are floating therefore we must not pass an cpustate */ void s390_sclp_extint(uint32_t parm);