From patchwork Fri Mar 11 09:56:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 596118 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3C611140297 for ; Fri, 11 Mar 2016 20:59:27 +1100 (AEDT) Received: from localhost ([::1]:53729 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeJqv-0004eG-A3 for incoming@patchwork.ozlabs.org; Fri, 11 Mar 2016 04:59:25 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49882) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeJoa-0000Gj-8x for qemu-devel@nongnu.org; Fri, 11 Mar 2016 04:57:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aeJoX-0007DD-J2 for qemu-devel@nongnu.org; Fri, 11 Mar 2016 04:57:00 -0500 Received: from e06smtp08.uk.ibm.com ([195.75.94.104]:40262) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeJoX-0007CU-90 for qemu-devel@nongnu.org; Fri, 11 Mar 2016 04:56:57 -0500 Received: from localhost by e06smtp08.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 11 Mar 2016 09:56:53 -0000 X-IBM-Helo: d06dlp03.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id C09281B0806B for ; Fri, 11 Mar 2016 09:57:19 +0000 (GMT) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u2B9uqlV8389086 for ; Fri, 11 Mar 2016 09:56:52 GMT Received: from d06av05.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u2B9uqXp010376 for ; Fri, 11 Mar 2016 02:56:52 -0700 Received: from gondolin.ibm.com (sig-9-79-15-195.uk.ibm.com [9.79.15.195]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u2B9um5x010203 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 11 Mar 2016 02:56:52 -0700 From: Cornelia Huck To: peter.maydell@linaro.org Date: Fri, 11 Mar 2016 10:56:35 +0100 Message-Id: <1457690202-10361-5-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 2.7.2 In-Reply-To: <1457690202-10361-1-git-send-email-cornelia.huck@de.ibm.com> References: <1457690202-10361-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16031109-0033-0000-0000-0000063A7AC0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.104 Cc: Matthew Rosato , qemu-devel@nongnu.org, agraf@suse.de, borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Cornelia Huck Subject: [Qemu-devel] [PULL for-2.6 04/11] s390x/cpu: Tolerate max_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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Matthew Rosato Once hotplug is enabled, interrupts may come in for CPUs with an address > smp_cpus. Allocate for this and allow search routines to look beyond smp_cpus. Signed-off-by: Matthew Rosato Message-Id: <1457112875-5209-5-git-send-email-mjrosato@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand Signed-off-by: Cornelia Huck --- hw/s390x/s390-virtio.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c index c501a48..57c3c88 100644 --- a/hw/s390x/s390-virtio.c +++ b/hw/s390x/s390-virtio.c @@ -58,15 +58,16 @@ #define S390_TOD_CLOCK_VALUE_MISSING 0x00 #define S390_TOD_CLOCK_VALUE_PRESENT 0x01 -static S390CPU **ipi_states; +static S390CPU **cpu_states; S390CPU *s390_cpu_addr2state(uint16_t cpu_addr) { - if (cpu_addr >= smp_cpus) { + if (cpu_addr >= max_cpus) { return NULL; } - return ipi_states[cpu_addr]; + /* Fast lookup via CPU ID */ + return cpu_states[cpu_addr]; } void s390_init_ipl_dev(const char *kernel_filename, @@ -101,14 +102,14 @@ void s390_init_cpus(MachineState *machine) machine->cpu_model = "host"; } - ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus); + cpu_states = g_malloc0(sizeof(S390CPU *) * max_cpus); for (i = 0; i < smp_cpus; i++) { S390CPU *cpu; cpu = cpu_s390x_init(machine->cpu_model); - ipi_states[i] = cpu; + cpu_states[i] = cpu; } }