From nobody Mon Feb 9 04:46:15 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 1537520237611845.7105067906807; Fri, 21 Sep 2018 01:57:17 -0700 (PDT) Received: from localhost ([::1]:54593 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3HFU-0006Mf-Gu for importer@patchew.org; Fri, 21 Sep 2018 04:57:16 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48453) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3Ggm-0005e3-73 for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g3Ggl-00078M-DW for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38576) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1g3Ggf-0006m1-0L; Fri, 21 Sep 2018 04:21:18 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B24C23083391; Fri, 21 Sep 2018 08:21:11 +0000 (UTC) Received: from laptop.redhat.com (ovpn-117-87.ams2.redhat.com [10.36.117.87]) by smtp.corp.redhat.com (Postfix) with ESMTP id CE25A7D90A; Fri, 21 Sep 2018 08:20:56 +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: Fri, 21 Sep 2018 10:18:11 +0200 Message-Id: <20180921081819.9203-21-eric.auger@redhat.com> In-Reply-To: <20180921081819.9203-1-eric.auger@redhat.com> References: <20180921081819.9203-1-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Fri, 21 Sep 2018 08:21:11 +0000 (UTC) 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] [RFC v2 20/28] 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 77bdb76ade..172ddd396f 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -408,6 +408,26 @@ 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); @@ -743,6 +763,15 @@ 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