From nobody Tue Dec 16 03:21:44 2025 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.zoho.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 1490189703440305.5393524604708; Wed, 22 Mar 2017 06:35:03 -0700 (PDT) Received: from localhost ([::1]:51111 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqgPl-0008St-FX for importer@patchew.org; Wed, 22 Mar 2017 09:35:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44249) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cqgNp-0006vk-TS for qemu-devel@nongnu.org; Wed, 22 Mar 2017 09:33:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cqgNn-0001iM-L0 for qemu-devel@nongnu.org; Wed, 22 Mar 2017 09:33:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:32790) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cqgNl-0001hM-4y; Wed, 22 Mar 2017 09:32:57 -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 0150A64E0; Wed, 22 Mar 2017 13:32:57 +0000 (UTC) Received: from dell-r430-03.lab.eng.brq.redhat.com (dell-r430-03.lab.eng.brq.redhat.com [10.34.112.60]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0ACF35C6C9; Wed, 22 Mar 2017 13:32:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 0150A64E0 Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=imammedo@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 0150A64E0 From: Igor Mammedov To: qemu-devel@nongnu.org Date: Wed, 22 Mar 2017 14:32:27 +0100 Message-Id: <1490189568-167621-3-git-send-email-imammedo@redhat.com> In-Reply-To: <1490189568-167621-1-git-send-email-imammedo@redhat.com> References: <1490189568-167621-1-git-send-email-imammedo@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 [10.5.110.38]); Wed, 22 Mar 2017 13:32:57 +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 for-2.10 02/23] hw/arm/virt: extract mp-affinity calculation in separate function 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: Peter Maydell , Andrew Jones , Eduardo Habkost , qemu-arm@nongnu.org, qemu-ppc@nongnu.org, Shannon Zhao , Paolo Bonzini , David Gibson 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" Signed-off-by: Igor Mammedov --- hw/arm/virt.c | 59 ++++++++++++++++++++++++++++++++++++++++++-------------= ---- 1 file changed, 42 insertions(+), 17 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 5f62a03..484754e 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1194,6 +1194,45 @@ void virt_machine_done(Notifier *notifier, void *dat= a) virt_build_smbios(vms); } =20 +static uint64_t virt_idx2mp_affinity(VirtMachineState *vms, int idx) +{ + uint64_t mp_affinity; + uint8_t clustersz; + VirtMachineClass *vmc =3D VIRT_MACHINE_GET_CLASS(vms); + + if (!vmc->disallow_affinity_adjustment) { + uint8_t aff0, aff1; + + if (vms->gic_version =3D=3D 3) { + clustersz =3D GICV3_TARGETLIST_BITS; + } else { + clustersz =3D GIC_TARGETLIST_BITS; + } + + /* Adjust MPIDR like 64-bit KVM hosts, which incorporate the + * GIC's target-list limitations. 32-bit KVM hosts currently + * always create clusters of 4 CPUs, but that is expected to + * change when they gain support for gicv3. When KVM is enabled + * it will override the changes we make here, therefore our + * purposes are to make TCG consistent (with 64-bit KVM hosts) + * and to improve SGI efficiency. + */ + aff1 =3D idx / clustersz; + aff0 =3D idx % clustersz; + mp_affinity =3D (aff1 << ARM_AFF1_SHIFT) | aff0; + } else { + /* This cpu-id-to-MPIDR affinity is used only for TCG; + * KVM will override it. We don't support setting cluster ID + * ([16..23]) (known as Aff2 in later ARM ARM versions), or any of + * the higher affinity level fields, so these bits always RAZ. + */ + uint32_t Aff1 =3D idx / ARM_DEFAULT_CPUS_PER_CLUSTER; + uint32_t Aff0 =3D idx % ARM_DEFAULT_CPUS_PER_CLUSTER; + mp_affinity =3D (Aff1 << ARM_AFF1_SHIFT) | Aff0; + } + return mp_affinity; +} + static void machvirt_init(MachineState *machine) { VirtMachineState *vms =3D VIRT_MACHINE(machine); @@ -1210,7 +1249,6 @@ static void machvirt_init(MachineState *machine) CPUClass *cc; Error *err =3D NULL; bool firmware_loaded =3D bios_name || drive_get(IF_PFLASH, 0, 0); - uint8_t clustersz; =20 if (!cpu_model) { cpu_model =3D "cortex-a15"; @@ -1263,10 +1301,8 @@ static void machvirt_init(MachineState *machine) */ if (vms->gic_version =3D=3D 3) { virt_max_cpus =3D vms->memmap[VIRT_GIC_REDIST].size / 0x20000; - clustersz =3D GICV3_TARGETLIST_BITS; } else { virt_max_cpus =3D GIC_NCPU; - clustersz =3D GIC_TARGETLIST_BITS; } =20 if (max_cpus > virt_max_cpus) { @@ -1326,20 +1362,9 @@ static void machvirt_init(MachineState *machine) =20 for (n =3D 0; n < smp_cpus; n++) { Object *cpuobj =3D object_new(typename); - if (!vmc->disallow_affinity_adjustment) { - /* Adjust MPIDR like 64-bit KVM hosts, which incorporate the - * GIC's target-list limitations. 32-bit KVM hosts currently - * always create clusters of 4 CPUs, but that is expected to - * change when they gain support for gicv3. When KVM is enabled - * it will override the changes we make here, therefore our - * purposes are to make TCG consistent (with 64-bit KVM hosts) - * and to improve SGI efficiency. - */ - uint8_t aff1 =3D n / clustersz; - uint8_t aff0 =3D n % clustersz; - object_property_set_int(cpuobj, (aff1 << ARM_AFF1_SHIFT) | aff= 0, - "mp-affinity", NULL); - } + + object_property_set_int(cpuobj, virt_idx2mp_affinity(vms, n), + "mp-affinity", NULL); =20 if (!vms->secure) { object_property_set_bool(cpuobj, false, "has_el3", NULL); --=20 2.7.4