From nobody Mon Oct 13 23:16:44 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.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 (zohomail.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=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1582358620; cv=none; d=zohomail.com; s=zohoarc; b=e1X5+RzbRiSqNdiv6Z0GKMc/iDnlBc3eG8g9kU8NGwc3ejgXb1O9u+sDUsg0KdspLd/Aejxd6zV589mEu7YvGue7Wv50nxTSRrGyimZlRf0mQJg7tnhdRBxwf+CtwEPuQO7UE2UiVGXiB3lp4k7S1kxAA9oz/CGKQ5Kkk2AoyDU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1582358620; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=Rg169dEpfDBOwogtQtTOxhd+nvq4nw0cNmBY4wctvBQ=; b=N99/b5pN5HEIV/9GoerLGACw+tzruvMPn3+ZC2JwzlhKwgq/6hCV938FlFmyhvZ9VwcM7M9WS42c9DsVT9BXBJoeDIDcTW4yntueINJouFpLFwUWKe/QhodbOwqkrpfq5Jmkx2jNtPiL+iboHVYXnRLdNLclCRzfSPI78Jdy/yE= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1582358620072570.4304800906448; Sat, 22 Feb 2020 00:03:40 -0800 (PST) Received: from localhost ([::1]:39908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5PlD-00040y-2n for importer@patchew.org; Sat, 22 Feb 2020 03:03:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57492) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5Pjl-0002BN-MF for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j5Pjj-00082p-Bd for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:09 -0500 Received: from mga12.intel.com ([192.55.52.136]:36218) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j5Pjj-0007tM-2X for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:07 -0500 Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Feb 2020 00:01:58 -0800 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga006.jf.intel.com with ESMTP; 22 Feb 2020 00:01:57 -0800 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,471,1574150400"; d="scan'208";a="240547674" From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v3.1 08/22] vfio/common: add pasid_alloc/free support Date: Sat, 22 Feb 2020 00:07:09 -0800 Message-Id: <1582358843-51931-9-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582358843-51931-1-git-send-email-yi.l.liu@intel.com> References: <1582358843-51931-1-git-send-email-yi.l.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.136 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: kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , pbonzini@redhat.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This patch adds VFIO pasid alloc/free support to allow host intercept in PASID allocation for VM by adding VFIO implementation of HostIOMMUOps. pasid_alloc/free callbacks. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Cc: Alex Williamson Signed-off-by: Liu Yi L --- hw/vfio/common.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index f9be68d..8f30a52 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1179,8 +1179,53 @@ static int vfio_get_iommu_type(VFIOContainer *contai= ner, return -EINVAL; } =20 +static int vfio_host_icx_pasid_alloc(HostIOMMUContext *host_icx, + uint32_t min, uint32_t max, uint32_t *pa= sid) +{ + VFIOContainer *container =3D container_of(host_icx, VFIOContainer, hos= t_icx); + struct vfio_iommu_type1_pasid_request req; + unsigned long argsz; + int ret; + + argsz =3D sizeof(req); + req.argsz =3D argsz; + req.flags =3D VFIO_IOMMU_PASID_ALLOC; + req.alloc_pasid.min =3D min; + req.alloc_pasid.max =3D max; + + if (ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req)) { + ret =3D -errno; + error_report("%s: %d, alloc failed", __func__, ret); + return ret; + } + *pasid =3D req.alloc_pasid.result; + return 0; +} + +static int vfio_host_icx_pasid_free(HostIOMMUContext *host_icx, + uint32_t pasid) +{ + VFIOContainer *container =3D container_of(host_icx, VFIOContainer, hos= t_icx); + struct vfio_iommu_type1_pasid_request req; + unsigned long argsz; + int ret; + + argsz =3D sizeof(req); + req.argsz =3D argsz; + req.flags =3D VFIO_IOMMU_PASID_FREE; + req.free_pasid =3D pasid; + + if (ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req)) { + ret =3D -errno; + error_report("%s: %d, free failed", __func__, ret); + return ret; + } + return 0; +} + static struct HostIOMMUOps vfio_host_icx_ops =3D { -/* To be added later */ + .pasid_alloc =3D vfio_host_icx_pasid_alloc, + .pasid_free =3D vfio_host_icx_pasid_free, }; =20 /** --=20 2.7.4