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Mon, 5 Oct 2020 16:52:00 +0000 (GMT) Received: from smtp.tlslab.ibm.com (unknown [9.101.4.1]) by d06av22.portsmouth.uk.ibm.com (Postfix) with SMTP; Mon, 5 Oct 2020 16:52:00 +0000 (GMT) Received: from yukon.ibmuc.com (sig-9-145-2-207.uk.ibm.com [9.145.2.207]) by smtp.tlslab.ibm.com (Postfix) with ESMTP id F2EE2220155; Mon, 5 Oct 2020 18:51:59 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: David Gibson Subject: [PATCH v2 5/6] spapr/xive: Activate StoreEOI at the source level Date: Mon, 5 Oct 2020 18:51:46 +0200 Message-Id: <20201005165147.526426-6-clg@kaod.org> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20201005165147.526426-1-clg@kaod.org> References: <20201005165147.526426-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-10-05_11:2020-10-05, 2020-10-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 impostorscore=0 clxscore=1034 bulkscore=0 adultscore=0 suspectscore=0 phishscore=0 mlxscore=0 malwarescore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2010050117 Received-SPF: softfail client-ip=148.163.156.1; envelope-from=clg@kaod.org; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/05 12:52:09 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , qemu-ppc@nongnu.org, Greg Kurz , Gustavo Romero Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When the StoreEOI capability is "on", the H_INT_GET_SOURCE_INFO will set the StoreEOI flag for all sources. This could be an issue if StoreEOI is not supported on a specific source, of a passthrough device for instance. In that case, we could either introduce a new KVM ioctl to query the characteristics of the source at the HW level or deactivate StoreEOI on the machine. This is theoretically unsafe on a POWER9 host but it still runs. Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/spapr_xive.c | 1 + hw/ppc/spapr_irq.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 1fa09f287ac0..41f2719ff93a 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -280,6 +280,7 @@ static void spapr_xive_instance_init(Object *obj) SpaprXive *xive =3D SPAPR_XIVE(obj); =20 object_initialize_child(obj, "source", &xive->source, TYPE_XIVE_SOUR= CE); + object_property_add_alias(obj, "flags", OBJECT(&xive->source), "flag= s"); =20 object_initialize_child(obj, "end_source", &xive->end_source, TYPE_XIVE_END_SOURCE); diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c index f59960339ec3..cdf9f9df4173 100644 --- a/hw/ppc/spapr_irq.c +++ b/hw/ppc/spapr_irq.c @@ -325,9 +325,14 @@ void spapr_irq_init(SpaprMachineState *spapr, Error = **errp) =20 if (spapr->irq->xive) { uint32_t nr_servers =3D spapr_max_server_number(spapr); + uint64_t flags =3D 0; DeviceState *dev; int i; =20 + if (spapr_get_cap(spapr, SPAPR_CAP_STOREEOI) =3D=3D SPAPR_CAP_ON= ) { + flags |=3D XIVE_SRC_STORE_EOI; + } + dev =3D qdev_new(TYPE_SPAPR_XIVE); qdev_prop_set_uint32(dev, "nr-irqs", smc->nr_xirqs + SPAPR_XIRQ_= BASE); /* @@ -337,6 +342,7 @@ void spapr_irq_init(SpaprMachineState *spapr, Error *= *errp) qdev_prop_set_uint32(dev, "nr-ends", nr_servers << 3); object_property_set_link(OBJECT(dev), "xive-fabric", OBJECT(spap= r), &error_abort); + object_property_set_int(OBJECT(dev), "flags", flags, &error_abor= t); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); =20 spapr->xive =3D SPAPR_XIVE(dev); --=20 2.25.4