From nobody Mon Feb 9 16:51:13 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 153581206104061.24264233679946; Sat, 1 Sep 2018 07:27:41 -0700 (PDT) Received: from localhost ([::1]:37341 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fw6sF-0007T0-UZ for importer@patchew.org; Sat, 01 Sep 2018 10:27:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55054) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fw6q8-0006BB-90 for qemu-devel@nongnu.org; Sat, 01 Sep 2018 10:25:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fw6pC-00064Y-DQ for qemu-devel@nongnu.org; Sat, 01 Sep 2018 10:24:31 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57216 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fw6p6-0005zf-MT; Sat, 01 Sep 2018 10:24:25 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4C97A807689C; Sat, 1 Sep 2018 14:24:24 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-157.ams2.redhat.com [10.36.116.157]) by smtp.corp.redhat.com (Postfix) with ESMTP id 710E22166B41; Sat, 1 Sep 2018 14:24:22 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org Date: Sat, 1 Sep 2018 16:23:09 +0200 Message-Id: <20180901142312.11662-18-eric.auger@redhat.com> In-Reply-To: <20180901142312.11662-1-eric.auger@redhat.com> References: <20180901142312.11662-1-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Sat, 01 Sep 2018 14:24:24 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Sat, 01 Sep 2018 14:24:24 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eric.auger@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC 17/20] hw/vfio/common: Register MAP notifier for MSI binding 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: yi.l.liu@intel.com, cdall@kernel.org, mst@redhat.com, jean-philippe.brucker@arm.com, peterx@redhat.com, alex.williamson@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Register a MAP notifier to propage MSI stage 1 bindings to the host. When the notifier gets called, we pass the guest stage 1 MSI binding to the host. The host can then build a S2 binding whose entry is the guest MSI doorbell GPA. Signed-off-by: Eric Auger --- hw/vfio/common.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 49fcbbbc8c..412041593e 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -407,6 +407,26 @@ static void vfio_iommu_unmap_notify(IOMMUNotifier *n, = IOMMUTLBEntry *iotlb) } } =20 +static void vfio_iommu_msi_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iot= lb) +{ + VFIOGuestIOMMU *giommu =3D container_of(n, VFIOGuestIOMMU, n); + VFIOContainer *container =3D giommu->container; + struct vfio_iommu_type1_bind_guest_msi ustruct; + int ret; + + ustruct.argsz =3D sizeof(struct vfio_iommu_type1_bind_guest_msi); + ustruct.flags =3D 0; + ustruct.binding.iova =3D iotlb->iova; + ustruct.binding.gpa =3D iotlb->translated_addr; + ustruct.binding.granule =3D ctz64(~iotlb->addr_mask); + + ret =3D ioctl(container->fd, VFIO_IOMMU_BIND_MSI , &ustruct); + if (ret) { + error_report("%s: failed to pass MSI binding (%d)", + __func__, ret); + } +} + static void vfio_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) { VFIOGuestIOMMU *giommu =3D container_of(n, VFIOGuestIOMMU, n); @@ -742,6 +762,15 @@ static void vfio_listener_region_add(MemoryListener *l= istener, iommu_idx); QLIST_INSERT_HEAD(&container->giommu_list, giommu, giommu_next= ); memory_region_register_iommu_notifier(section->mr, &giommu->n); + + giommu =3D vfio_alloc_guest_iommu(container, iommu_mr, offset); + iommu_iotlb_notifier_init(&giommu->n, vfio_iommu_msi_map_notif= y, + IOMMU_NOTIFIER_MAP, + section->offset_within_region, + int128_get64(llend), + iommu_idx); + QLIST_INSERT_HEAD(&container->giommu_list, giommu, giommu_next= ); + memory_region_register_iommu_notifier(section->mr, &giommu->n); } else { /* MAP/UNMAP IOTLB notifier */ giommu =3D vfio_alloc_guest_iommu(container, iommu_mr, offset); --=20 2.17.1