From patchwork Thu Mar 3 21:30:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Rosato X-Patchwork-Id: 8496351 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 453AB9F314 for ; Thu, 3 Mar 2016 21:32:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6DCB6202FF for ; Thu, 3 Mar 2016 21:32:55 +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 69E9120225 for ; Thu, 3 Mar 2016 21:32:54 +0000 (UTC) Received: from localhost ([::1]:37487 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abard-0005Sq-NV for patchwork-qemu-devel@patchwork.kernel.org; Thu, 03 Mar 2016 16:32:53 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54840) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abapt-0002Hf-Gf for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:31:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1abapq-0001o9-6L for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:31:05 -0500 Received: from e34.co.us.ibm.com ([32.97.110.152]:39176) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abapp-0001o3-U3 for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:31:02 -0500 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 3 Mar 2016 14:31:01 -0700 Received: from d03dlp03.boulder.ibm.com (9.17.202.179) by e34.co.us.ibm.com (192.168.1.134) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 3 Mar 2016 14:30:43 -0700 X-IBM-Helo: d03dlp03.boulder.ibm.com X-IBM-MailFrom: mjrosato@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b03cxnp08025.gho.boulder.ibm.com (b03cxnp08025.gho.boulder.ibm.com [9.17.130.17]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id 8230F19D8042 for ; Thu, 3 Mar 2016 14:18:38 -0700 (MST) Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u23LUgB939977104 for ; Thu, 3 Mar 2016 14:30:42 -0700 Received: from d03av02.boulder.ibm.com (localhost [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u23LUfIC000758 for ; Thu, 3 Mar 2016 14:30:42 -0700 Received: from rosatomj-ThinkPad-W530.endicott.ibm.com (rosatomj-thinkpad-w530.endicott.ibm.com [9.60.84.71]) by d03av02.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u23LUXpK032185; Thu, 3 Mar 2016 14:30:40 -0700 From: Matthew Rosato To: qemu-devel@nongnu.org Date: Thu, 3 Mar 2016 16:30:32 -0500 Message-Id: <1457040633-30951-7-git-send-email-mjrosato@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1457040633-30951-1-git-send-email-mjrosato@linux.vnet.ibm.com> References: <1457040633-30951-1-git-send-email-mjrosato@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16030321-0017-0000-0000-000012B87166 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 32.97.110.152 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 v8 6/7] s390x/cpu: Add error handling to cpu creation 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 Check for and propogate errors during s390 cpu creation. Signed-off-by: Matthew Rosato --- hw/s390x/s390-virtio.c | 2 +- target-s390x/cpu-qom.h | 1 + target-s390x/cpu.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++- target-s390x/cpu.h | 2 ++ target-s390x/helper.c | 42 +++++++++++++++++++++++++++++++++++-- 5 files changed, 99 insertions(+), 4 deletions(-) diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c index f00d6b4..2ab7b94 100644 --- a/hw/s390x/s390-virtio.c +++ b/hw/s390x/s390-virtio.c @@ -116,7 +116,7 @@ void s390_init_cpus(MachineState *machine) } for (i = 0; i < smp_cpus; i++) { - cpu_s390x_init(machine->cpu_model); + s390_new_cpu(machine->cpu_model, i, &error_fatal); } } diff --git a/target-s390x/cpu-qom.h b/target-s390x/cpu-qom.h index 56d82f2..1c90933 100644 --- a/target-s390x/cpu-qom.h +++ b/target-s390x/cpu-qom.h @@ -68,6 +68,7 @@ typedef struct S390CPU { /*< public >*/ CPUS390XState env; + int64_t id; /* needed for live migration */ void *irqstate; uint32_t irqstate_saved_size; diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c index 76c8eaf..d1b7af9 100644 --- a/target-s390x/cpu.c +++ b/target-s390x/cpu.c @@ -30,8 +30,10 @@ #include "qemu/error-report.h" #include "hw/hw.h" #include "trace.h" +#include "qapi/visitor.h" #ifndef CONFIG_USER_ONLY #include "sysemu/arch_init.h" +#include "sysemu/sysemu.h" #endif #define CR0_RESET 0xE0UL @@ -199,16 +201,36 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp) CPUS390XState *env = &cpu->env; Error *err = NULL; +#if !defined(CONFIG_USER_ONLY) + if (cpu->id >= max_cpus) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", max allowed: %d", cpu->id, max_cpus - 1); + return; + } +#endif + if (cpu_exists(cpu->id)) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", it already exists", cpu->id); + return; + } + if (cpu->id != scc->next_cpu_id) { + error_setg(errp, "Unable to add CPU: %" PRIi64 + ", The next available id is %" PRIi64, cpu->id, + scc->next_cpu_id); + return; + } + cpu_exec_init(cs, &err); if (err != NULL) { error_propagate(errp, err); return; } + scc->next_cpu_id = cs->cpu_index + 1; #if !defined(CONFIG_USER_ONLY) qemu_register_reset(s390_cpu_machine_reset_cb, cpu); #endif - env->cpu_num = scc->next_cpu_id++; + env->cpu_num = cpu->id; s390_cpu_gdb_init(cs); qemu_init_vcpu(cs); #if !defined(CONFIG_USER_ONLY) @@ -220,6 +242,36 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp) scc->parent_realize(dev, errp); } +static void s390_cpu_set_id(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + S390CPU *cpu = S390_CPU(obj); + DeviceState *dev = DEVICE(obj); + const int64_t min = 0; + const int64_t max = UINT32_MAX; + Error *err = NULL; + int64_t value; + + if (dev->realized) { + error_setg(errp, "Attempt to set property '%s' on '%s' after " + "it was realized", name, object_get_typename(obj)); + return; + } + + visit_type_int(v, name, &value, &err); + if (err) { + error_propagate(errp, err); + return; + } + if (value < min || value > max) { + error_setg(errp, "Property %s.%s doesn't take value %" PRId64 + " (minimum: %" PRId64 ", maximum: %" PRId64 ")" , + object_get_typename(obj), name, value, min, max); + return; + } + cpu->id = value; +} + static void s390_cpu_initfn(Object *obj) { CPUState *cs = CPU(obj); @@ -233,6 +285,8 @@ static void s390_cpu_initfn(Object *obj) cs->env_ptr = env; cs->halted = 1; cs->exception_index = EXCP_HLT; + object_property_add(OBJECT(cpu), "id", "int64_t", NULL, s390_cpu_set_id, + NULL, NULL, NULL); #if !defined(CONFIG_USER_ONLY) qemu_get_timedate(&tm, 0); env->tod_offset = TOD_UNIX_EPOCH + diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 49c8415..6667cc0 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -413,6 +413,8 @@ void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen); #endif S390CPU *cpu_s390x_init(const char *cpu_model); +S390CPU *s390_new_cpu(const char *cpu_model, int64_t id, Error **errp); +S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp); void s390x_translate_init(void); int cpu_s390x_exec(CPUState *cpu); diff --git a/target-s390x/helper.c b/target-s390x/helper.c index 838bdd9..c48c816 100644 --- a/target-s390x/helper.c +++ b/target-s390x/helper.c @@ -30,6 +30,9 @@ //#define DEBUG_S390 //#define DEBUG_S390_STDOUT +/* Use to track cpu ID for linux-user only */ +static int64_t next_cpu_id; + #ifdef DEBUG_S390 #ifdef DEBUG_S390_STDOUT #define DPRINTF(fmt, ...) \ @@ -65,14 +68,49 @@ void s390x_cpu_timer(void *opaque) } #endif -S390CPU *cpu_s390x_init(const char *cpu_model) +S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp) { S390CPU *cpu; cpu = S390_CPU(object_new(TYPE_S390_CPU)); - object_property_set_bool(OBJECT(cpu), true, "realized", NULL); + return cpu; +} + +S390CPU *s390_new_cpu(const char *cpu_model, int64_t id, Error **errp) +{ + S390CPU *cpu = NULL; + Error *err = NULL; + + cpu = cpu_s390x_create(cpu_model, &err); + if (err != NULL) { + goto out; + } + + object_property_set_int(OBJECT(cpu), id, "id", &err); + if (err != NULL) { + goto out; + } + object_property_set_bool(OBJECT(cpu), true, "realized", &err); +out: + if (err) { + error_propagate(errp, err); + object_unref(OBJECT(cpu)); + cpu = NULL; + } + return cpu; +} + +S390CPU *cpu_s390x_init(const char *cpu_model) +{ + Error *err = NULL; + S390CPU *cpu; + + cpu = s390_new_cpu(cpu_model, next_cpu_id++, &err); + if (err) { + error_report_err(err); + } return cpu; }