From nobody Sun Feb 8 22:34:58 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 150531040631947.885999639972056; Wed, 13 Sep 2017 06:46:46 -0700 (PDT) Received: from localhost ([::1]:42623 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds801-0001yc-K4 for importer@patchew.org; Wed, 13 Sep 2017 09:46:41 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39601) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds7g5-0006E8-7r for qemu-devel@nongnu.org; Wed, 13 Sep 2017 09:26:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ds7g4-0003XH-4O for qemu-devel@nongnu.org; Wed, 13 Sep 2017 09:26:05 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35446) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ds7g3-0003X4-RK for qemu-devel@nongnu.org; Wed, 13 Sep 2017 09:26:04 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E1E2D7E425; Wed, 13 Sep 2017 13:26:02 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-21.ams2.redhat.com [10.36.116.21]) by smtp.corp.redhat.com (Postfix) with ESMTP id E1C2269FB6; Wed, 13 Sep 2017 13:25:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com E1E2D7E425 Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=david@redhat.com From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 13 Sep 2017 15:24:16 +0200 Message-Id: <20170913132417.24384-22-david@redhat.com> In-Reply-To: <20170913132417.24384-1-david@redhat.com> References: <20170913132417.24384-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Wed, 13 Sep 2017 13:26:03 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v5 21/22] s390x: generate sclp cpu information from possible_cpus X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matthew Rosato , thuth@redhat.com, Eduardo Habkost , david@redhat.com, cohuck@redhat.com, Richard Henderson , Alexander Graf , Markus Armbruster , borntraeger@de.ibm.com, Igor Mammedov , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This is the first step to allow hot plugging of CPUs in a non-sequential order. If a cpu is available ("plugged") can directly be decided by looking at the cpu state pointer. This makes sure, that really only cpus attached to the machine are reported. Signed-off-by: David Hildenbrand --- hw/s390x/sclp.c | 34 ++++++++++++++-------------------- 1 file changed, 14 insertions(+), 20 deletions(-) diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c index fd097262c7..30aefbfd15 100644 --- a/hw/s390x/sclp.c +++ b/hw/s390x/sclp.c @@ -34,16 +34,21 @@ static inline SCLPDevice *get_sclp_device(void) return sclp; } =20 -static void prepare_cpu_entries(SCLPDevice *sclp, CPUEntry *entry, int cou= nt) +static void prepare_cpu_entries(SCLPDevice *sclp, CPUEntry *entry, int *co= unt) { + MachineState *ms =3D MACHINE(qdev_get_machine()); uint8_t features[SCCB_CPU_FEATURE_LEN] =3D { 0 }; int i; =20 s390_get_feat_block(S390_FEAT_TYPE_SCLP_CPU, features); - for (i =3D 0; i < count; i++) { - entry[i].address =3D i; - entry[i].type =3D 0; - memcpy(entry[i].features, features, sizeof(entry[i].features)); + for (i =3D 0, *count =3D 0; i < ms->possible_cpus->len; i++) { + if (!ms->possible_cpus->cpus[i].cpu) { + continue; + } + entry[*count].address =3D ms->possible_cpus->cpus[i].arch_id; + entry[*count].type =3D 0; + memcpy(entry[*count].features, features, sizeof(features)); + (*count)++; } } =20 @@ -53,17 +58,13 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb) ReadInfo *read_info =3D (ReadInfo *) sccb; MachineState *machine =3D MACHINE(qdev_get_machine()); sclpMemoryHotplugDev *mhd =3D get_sclp_memory_hotplug_dev(); - CPUState *cpu; - int cpu_count =3D 0; + int cpu_count; int rnsize, rnmax; int slots =3D MIN(machine->ram_slots, s390_get_memslot_count()); IplParameterBlock *ipib =3D s390_ipl_get_iplb(); =20 - CPU_FOREACH(cpu) { - cpu_count++; - } - /* CPU information */ + prepare_cpu_entries(sclp, read_info->entries, &cpu_count); read_info->entries_cpu =3D cpu_to_be16(cpu_count); read_info->offset_cpu =3D cpu_to_be16(offsetof(ReadInfo, entries)); read_info->highest_cpu =3D cpu_to_be16(max_cpus); @@ -76,8 +77,6 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb) s390_get_feat_block(S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT, read_info->conf_char_ext); =20 - prepare_cpu_entries(sclp, read_info->entries, cpu_count); - read_info->facilities =3D cpu_to_be64(SCLP_HAS_CPU_INFO | SCLP_HAS_IOA_RECONFIG); =20 @@ -333,13 +332,9 @@ static void unassign_storage(SCLPDevice *sclp, SCCB *s= ccb) static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb) { ReadCpuInfo *cpu_info =3D (ReadCpuInfo *) sccb; - CPUState *cpu; - int cpu_count =3D 0; - - CPU_FOREACH(cpu) { - cpu_count++; - } + int cpu_count; =20 + prepare_cpu_entries(sclp, cpu_info->entries, &cpu_count); cpu_info->nr_configured =3D cpu_to_be16(cpu_count); cpu_info->offset_configured =3D cpu_to_be16(offsetof(ReadCpuInfo, entr= ies)); cpu_info->nr_standby =3D cpu_to_be16(0); @@ -348,7 +343,6 @@ static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *= sccb) cpu_info->offset_standby =3D cpu_to_be16(cpu_info->offset_configured + cpu_info->nr_configured*sizeof(CPUEntry)); =20 - prepare_cpu_entries(sclp, cpu_info->entries, cpu_count); =20 sccb->h.response_code =3D cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION); } --=20 2.13.5