From nobody Fri Dec 19 15:46:38 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.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=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1766039279; cv=none; d=zohomail.com; s=zohoarc; b=FRfdSAiuurmJLX++Df6crqnD7AiCRp7N/yv78NSNBMHimMJPKDdAzBgR3Tj8k9gtJ2O9K0sYoGzJV33ovR5iABjL8ri4++htL3HE5Xta3G0ga9TPMfdDBo0l1LX3wHA9NItrz9G/DlwihgzWJ1EPocEcBr7xVhaowSWYKbxc7Io= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1766039279; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=om6VO618eIcqFFG8nW9fkNBF54tj0GeDdhzmTMg3TsA=; b=gbQ29c9W5l1Vx4yZicVffvf0B7tctr/oRXxDNV6xwJqhM/PybIoWvEl9bOvxPBbuJazu9h/NhIoOhg5fl1aRmWo5zkWiAV3fnzf2YjARCo4eMnvfiXeywF8pNClT3IHVs5PcqHXaOeh2qX/AEu6wN05vr+k4GMgsftnuB9WpnMw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.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=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1766039279498882.1459201488981; Wed, 17 Dec 2025 22:27:59 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vW7Ty-0003Kx-LW; Thu, 18 Dec 2025 01:27:26 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vW7Tx-0003KW-6A for qemu-devel@nongnu.org; Thu, 18 Dec 2025 01:27:25 -0500 Received: from mgamail.intel.com ([198.175.65.18]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vW7Tu-00015T-Ld for qemu-devel@nongnu.org; Thu, 18 Dec 2025 01:27:24 -0500 Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Dec 2025 22:27:19 -0800 Received: from unknown (HELO gnr-sp-2s-612.sh.intel.com) ([10.112.230.229]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Dec 2025 22:27:17 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766039242; x=1797575242; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=QdZ1ubBQIL/oXabO9On2Or1ttJr/IWvuDU6xXkUi2/c=; b=fakLYqLJ6McWm7+Zvj3vJAGoRJOkzFUNrIoniKyT7cG8ALoir6oNTGNI sNK2YlXs6BnfBqEKstHkgfwPPXgnNx7VhdOaLQrHddG/n3aw8hEl3SCr+ UppmLldpgWDCXYbBw6ma6Zpt0F4sJlGMlDmdhpqaLP/6gF9BUL2Q+FxT3 Tp176jR8g9IOGbytztnwC00nuviJg1+BfSl5cEmj0BOadxqmsFRgxiZKM XYYBfmvdw5lk5ikORctUjhY2l4HEbuL/qQ3ASlo6OppnHcwbK9Yumvbhr nsATVJb0zMzQ+f2VNaYDd78jEBrqvgbIrgpYkoTmKXMgfnURL0SA4Hqu+ Q==; X-CSE-ConnectionGUID: i9aX1W84SzSJTbEQy+a9ug== X-CSE-MsgGUID: ZsqwsqvnT9ypMw+5mPZHKQ== X-IronPort-AV: E=McAfee;i="6800,10657,11645"; a="68028499" X-IronPort-AV: E=Sophos;i="6.21,156,1763452800"; d="scan'208";a="68028499" X-CSE-ConnectionGUID: cXArXbc+SiC75uqlxnMlpg== X-CSE-MsgGUID: /C2ySSYGSJ2hfn6gDv+L7Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,156,1763452800"; d="scan'208";a="203569840" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex@shazbot.org, clg@redhat.com, mst@redhat.com, jasowang@redhat.com, yi.l.liu@intel.com, clement.mathieu--drif@eviden.com, eric.auger@redhat.com, joao.m.martins@oracle.com, avihaih@nvidia.com, xudong.hao@intel.com, giovanni.cabiddu@intel.com, rohith.s.r@intel.com, mark.gross@intel.com, arjan.van.de.ven@intel.com, Zhenzhong Duan Subject: [PATCH v6 1/9] vfio/iommufd: Add framework code to support getting dirty bitmap before unmap Date: Thu, 18 Dec 2025 01:26:22 -0500 Message-ID: <20251218062643.624796-2-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251218062643.624796-1-zhenzhong.duan@intel.com> References: <20251218062643.624796-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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; 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; Received-SPF: pass client-ip=198.175.65.18; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1766039281226158500 Currently we support device and iommu dirty tracking, device dirty tracking is preferred. Add the framework code in iommufd_cdev_unmap() to choose either device or iommu dirty tracking, just like vfio_legacy_dma_unmap_one(). Signed-off-by: Zhenzhong Duan Reviewed-by: C=C3=A9dric Le Goater Reviewed-by: Yi Liu Tested-by: Xudong Hao Tested-by: Giovannio Cabiddu Tested-by: Rohith S R --- hw/vfio/iommufd.c | 34 +++++++++++++++++++++++++++++++--- 1 file changed, 31 insertions(+), 3 deletions(-) diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index ca8a6b7029..b527c7d1eb 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -61,14 +61,42 @@ static int iommufd_cdev_unmap(const VFIOContainer *bcon= tainer, IOMMUTLBEntry *iotlb, bool unmap_all) { const VFIOIOMMUFDContainer *container =3D VFIO_IOMMU_IOMMUFD(bcontaine= r); + IOMMUFDBackend *be =3D container->be; + uint32_t ioas_id =3D container->ioas_id; + bool need_dirty_sync =3D false; + Error *local_err =3D NULL; + int ret; =20 if (unmap_all) { size =3D UINT64_MAX; } =20 - /* TODO: Handle dma_unmap_bitmap with iotlb args (migration) */ - return iommufd_backend_unmap_dma(container->be, - container->ioas_id, iova, size); + if (iotlb && vfio_container_dirty_tracking_is_started(bcontainer)) { + if (!vfio_container_devices_dirty_tracking_is_supported(bcontainer= ) && + bcontainer->dirty_pages_supported) { + /* TODO: query dirty bitmap before DMA unmap */ + return iommufd_backend_unmap_dma(be, ioas_id, iova, size); + } + + need_dirty_sync =3D true; + } + + ret =3D iommufd_backend_unmap_dma(be, ioas_id, iova, size); + if (ret) { + return ret; + } + + if (need_dirty_sync) { + ret =3D vfio_container_query_dirty_bitmap(bcontainer, iova, size, + iotlb->translated_addr, + &local_err); + if (ret) { + error_report_err(local_err); + return ret; + } + } + + return 0; } =20 static bool iommufd_cdev_kvm_device_add(VFIODevice *vbasedev, Error **errp) --=20 2.47.1