From patchwork Thu Sep 28 07:15:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13402173 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CEDACE7B08 for ; Thu, 28 Sep 2023 07:15:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231516AbjI1HPt (ORCPT ); Thu, 28 Sep 2023 03:15:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231367AbjI1HPn (ORCPT ); Thu, 28 Sep 2023 03:15:43 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6D35CC0; Thu, 28 Sep 2023 00:15:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695885341; x=1727421341; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=caYY16c3X4qJEs7vjlwRO/5AoAt3WHXwfSZCdiD2ZmE=; b=MUUMRgTThCSMlVV1j4ZAkDCiQnN9ahJ6PcuzU+TcvyVcHdmKXm8mQy/F g+aAp8eaWWt/Te+fZL3WWhBmn6nKxpYDZDEVMpnN8ProDarasVWjq+4c8 VkYWlZkfoHhL0Pd+5xO1+G2i+/Pc9m0Vp5TFJFlLkTABF/rXNwnpQFpvr 2CXqJYOih/iLUOE5kDpWrP6E5EH2Ry4iaPh6XPmwo1l/bTqxlHDB9ijOA yvddVyVhU3n9kD3aiazM2aqmWI40jlWP72/xnU9snwxIyt6pTv5KwNYbN +LqUS+2BpDfjQGXGz5fVOmtVooC9h75rOJ0zcTap1qW+Lp0oZcbn3ijS1 A==; X-IronPort-AV: E=McAfee;i="6600,9927,10846"; a="412914872" X-IronPort-AV: E=Sophos;i="6.03,183,1694761200"; d="scan'208";a="412914872" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Sep 2023 00:15:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10846"; a="784602100" X-IronPort-AV: E=Sophos;i="6.03,183,1694761200"; d="scan'208";a="784602100" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga001.jf.intel.com with ESMTP; 28 Sep 2023 00:15:36 -0700 From: Yi Liu To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.com, baolu.lu@linux.intel.com Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, zhenzhong.duan@intel.com, joao.m.martins@oracle.com Subject: [PATCH v2 4/6] iommufd/hw_pagetable: Support allocating nested parent domain Date: Thu, 28 Sep 2023 00:15:26 -0700 Message-Id: <20230928071528.26258-5-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230928071528.26258-1-yi.l.liu@intel.com> References: <20230928071528.26258-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This extends IOMMU_HWPT_ALLOC to allocate domains used as parent (stage-2) in nested translation. Signed-off-by: Yi Liu Reviewed-by: Lu Baolu Reviewed-by: Kevin Tian --- drivers/iommu/iommufd/hw_pagetable.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index 5be7a31cbd9c..8b3d2875d642 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -83,6 +83,9 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas, lockdep_assert_held(&ioas->mutex); + if (flags && !ops->domain_alloc_user) + return ERR_PTR(-EOPNOTSUPP); + hwpt = iommufd_object_alloc(ictx, hwpt, IOMMUFD_OBJ_HW_PAGETABLE); if (IS_ERR(hwpt)) return hwpt; @@ -154,7 +157,7 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd) struct iommufd_ioas *ioas; int rc; - if (cmd->flags || cmd->__reserved) + if ((cmd->flags & (~IOMMU_HWPT_ALLOC_NEST_PARENT)) || cmd->__reserved) return -EOPNOTSUPP; idev = iommufd_get_device(ucmd, cmd->dev_id);