From nobody Sun Feb 8 14:45:57 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 1537520024824193.88360233589424; Fri, 21 Sep 2018 01:53:44 -0700 (PDT) Received: from localhost ([::1]:54569 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3HC3-00034v-FX for importer@patchew.org; Fri, 21 Sep 2018 04:53:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48601) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g3Ggy-0005qN-Dt for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g3Ggx-0007aS-Je for qemu-devel@nongnu.org; Fri, 21 Sep 2018 04:21:36 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50838) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1g3Ggv-0007VP-N1; Fri, 21 Sep 2018 04:21:33 -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 0411F3002A92; Fri, 21 Sep 2018 08:21:33 +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 AF1947D665; Fri, 21 Sep 2018 08:21:30 +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 10:18:15 +0200 Message-Id: <20180921081819.9203-25-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 [10.5.110.47]); Fri, 21 Sep 2018 08:21:33 +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 24/28] memory: Introduce IOMMU_NOTIFIER_INIT_CFG IOMMU Config Notifier 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" This patch adds a new IOMMU config notifier. It aims at configuring the fault reporting from host to guest. Signed-off-by: Eric Auger --- I acknowledge I am not a big fan of having a vfio uapi struct referenced in IOMMUConfig. However this config really sets something at VFIO layer. Also I may rename IOMMU_NOTIFIER_INIT_CFG into IOMMU_NOTIFIER_FAULT_CONFIG. Globally it is also questionnable at this stage if such a notifier really is requested. I devised that to allow the SMMU to pass a fifo size to the kernel. This size can be aligned to the size as seen/set by the guest. However for unrecoverable errors we may consider that having an arbitrary size determined by vfio/common.c can be sufficient? --- include/exec/memory.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/exec/memory.h b/include/exec/memory.h index 93150e1450..f54c39b248 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -28,6 +28,7 @@ #include "hw/qdev-core.h" #ifdef CONFIG_LINUX #include +#include #endif =20 #define RAM_ADDR_INVALID (~(ram_addr_t)0) @@ -82,6 +83,7 @@ typedef struct IOMMUConfig { union { #ifdef __linux__ struct iommu_pasid_table_config pasid_cfg; + struct vfio_iommu_type1_guest_fault_config fault_cfg; #endif }; } IOMMUConfig; @@ -98,10 +100,13 @@ typedef enum { IOMMU_NOTIFIER_MAP =3D 0x2, /* Notify stage 1 config changes */ IOMMU_NOTIFIER_PASID_CFG =3D 0x4, + /* Notify IOMMU initial setup */ + IOMMU_NOTIFIER_INIT_CFG =3D 0x8, } IOMMUNotifierFlag; =20 #define IOMMU_NOTIFIER_IOTLB_ALL (IOMMU_NOTIFIER_MAP | IOMMU_NOTIFIER_UNMA= P) -#define IOMMU_NOTIFIER_CONFIG_ALL (IOMMU_NOTIFIER_PASID_CFG) +#define IOMMU_NOTIFIER_CONFIG_ALL (IOMMU_NOTIFIER_PASID_CFG | \ + IOMMU_NOTIFIER_INIT_CFG) =20 struct IOMMUNotifier; struct IOMMUConfig; --=20 2.17.1