From patchwork Thu Mar 3 21:30:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Rosato X-Patchwork-Id: 8496331 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 D6F409F314 for ; Thu, 3 Mar 2016 21:32:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 45F8A20396 for ; Thu, 3 Mar 2016 21:32:52 +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 9271F202FF for ; Thu, 3 Mar 2016 21:32:51 +0000 (UTC) Received: from localhost ([::1]:37486 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abara-0005Oe-U2 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 03 Mar 2016 16:32:50 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54790) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abapb-0001nm-Ua for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:30:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1abapZ-0001lW-Vb for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:30:47 -0500 Received: from e34.co.us.ibm.com ([32.97.110.152]:38901) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abapZ-0001lJ-NO for qemu-devel@nongnu.org; Thu, 03 Mar 2016 16:30:45 -0500 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 3 Mar 2016 14:30:42 -0700 X-IBM-Helo: d03dlp01.boulder.ibm.com X-IBM-MailFrom: mjrosato@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 44DA11FF0023 for ; Thu, 3 Mar 2016 14:18:51 -0700 (MST) Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u23LUfxX33292518 for ; Thu, 3 Mar 2016 14:30:41 -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 u23LUe9w000666 for ; Thu, 3 Mar 2016 14:30:40 -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 u23LUXpI032185; Thu, 3 Mar 2016 14:30:38 -0700 From: Matthew Rosato To: qemu-devel@nongnu.org Date: Thu, 3 Mar 2016 16:30:30 -0500 Message-Id: <1457040633-30951-5-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: 16030321-0017-0000-0000-000012B8715F 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 4/7] 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+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 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 --- hw/s390x/s390-virtio.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c index c501a48..90bc58a 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++) { + for (i = 0; i < max_cpus; i++) { S390CPU *cpu; cpu = cpu_s390x_init(machine->cpu_model); - ipi_states[i] = cpu; + cpu_states[i] = cpu; } }