From nobody Mon Feb 9 23:39:10 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1552384708749526.6625108877266; Tue, 12 Mar 2019 02:58:28 -0700 (PDT) Received: from localhost ([127.0.0.1]:48605 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3eAz-0005qK-OM for importer@patchew.org; Tue, 12 Mar 2019 05:58:25 -0400 Received: from eggs.gnu.org ([209.51.188.92]:53006) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3dU8-0008LO-LV for qemu-devel@nongnu.org; Tue, 12 Mar 2019 05:14:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h3dGY-0005RO-1m for qemu-devel@nongnu.org; Tue, 12 Mar 2019 05:00:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42354) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h3dGX-0005Qe-Si; Tue, 12 Mar 2019 05:00:05 -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 D80CBC04D29A; Tue, 12 Mar 2019 08:53:46 +0000 (UTC) Received: from umbus.redhat.com (vpn2-54-33.bne.redhat.com [10.64.54.33]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7E0286013E; Tue, 12 Mar 2019 08:53:44 +0000 (UTC) From: David Gibson To: peter.maydell@linaro.org Date: Tue, 12 Mar 2019 19:52:22 +1100 Message-Id: <20190312085316.8054-9-dgibson@redhat.com> In-Reply-To: <20190312085316.8054-1-dgibson@redhat.com> References: <20190312085316.8054-1-dgibson@redhat.com> MIME-Version: 1.0 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 [10.5.110.31]); Tue, 12 Mar 2019 08:53:46 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 08/62] target/ppc/spapr: Enable the large decrementer for pseries-4.0 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: lvivier@redhat.com, clg@kaod.org, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, groug@kaod.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Suraj Jitindar Singh Enable the large decrementer by default for the pseries-4.0 machine type. It is disabled again by default_caps_with_cpu() for pre-POWER9 cpus since they don't support the large decrementer. Signed-off-by: Suraj Jitindar Singh Message-Id: <20190301024317.22137-4-sjitindarsingh@gmail.com> Signed-off-by: David Gibson --- hw/ppc/spapr.c | 3 ++- hw/ppc/spapr_caps.c | 5 +++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 6b54ad260a..8e24d7dc50 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4311,7 +4311,7 @@ static void spapr_machine_class_init(ObjectClass *oc,= void *data) smc->default_caps.caps[SPAPR_CAP_IBS] =3D SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] =3D 16; /* 64kiB */ smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] =3D SPAPR_CAP_OFF; - smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] =3D SPAPR_CAP_OFF; + smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] =3D SPAPR_CAP_ON; spapr_caps_add_properties(smc, &error_abort); smc->irq =3D &spapr_irq_xics; smc->dr_phb_enabled =3D true; @@ -4387,6 +4387,7 @@ static void spapr_machine_3_1_class_options(MachineCl= ass *mc) mc->default_cpu_type =3D POWERPC_CPU_TYPE_NAME("power8_v2.0"); smc->update_dt_enabled =3D false; smc->dr_phb_enabled =3D false; + smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] =3D SPAPR_CAP_OFF; } =20 DEFINE_SPAPR_MACHINE(3_1, "3.1", false); diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 942ac8ebbe..faab472d06 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -541,6 +541,11 @@ static sPAPRCapabilities default_caps_with_cpu(sPAPRMa= chineState *spapr, =20 caps =3D smc->default_caps; =20 + if (!ppc_type_check_compat(cputype, CPU_POWERPC_LOGICAL_3_00, + 0, spapr->max_compat_pvr)) { + caps.caps[SPAPR_CAP_LARGE_DECREMENTER] =3D SPAPR_CAP_OFF; + } + if (!ppc_type_check_compat(cputype, CPU_POWERPC_LOGICAL_2_07, 0, spapr->max_compat_pvr)) { caps.caps[SPAPR_CAP_HTM] =3D SPAPR_CAP_OFF; --=20 2.20.1