From patchwork Fri Nov 17 13:18:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 166176 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:9910:0:b0:403:3b70:6f57 with SMTP id i16csp520924vqn; Fri, 17 Nov 2023 05:18:48 -0800 (PST) X-Google-Smtp-Source: AGHT+IHKa4++EL3s1fEiYIj3EWT8WvI8xDUfpp5n/gmhmpG+W+K0DMYL3uyRTBZ9eTuYrDVB6CNh X-Received: by 2002:a17:90a:72c5:b0:280:1d67:16a6 with SMTP id l5-20020a17090a72c500b002801d6716a6mr21184555pjk.34.1700227128040; Fri, 17 Nov 2023 05:18:48 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1700227128; cv=none; d=google.com; s=arc-20160816; b=MIT78cEYY5CW00zfBgIzsvNry9NvwsLqQLaCMyNA8fQOKNdzs/sm974RTBnGQagmOS hoTnC/m44rbr2Vn7ubpW/NyenKqw03OMtQAdWJ2JhgChUVlinpUcVVaHQVBCe/5PslSG BioP1pmyzOctkGP0gkdEV7U9RghlUhFh88FpLcuvvh8W/OINkzChhBS6DqZRqyLfPCT2 eGGMqzHgdGmzDsXAONxZCiiGDdmFftn+6fNiQtHUJP7Y1vcT4DC26ohC1Xv4JEEKLXCj qNWcLaY41x70t0/R2b127Xc9m002Jmnh2xhA1pqfG5h7v6Kbj896FaP0uriEyAZM9iXB NW6Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=QMGmw/+GV9QWukrj0p9nCn/P2bie1GsCWo7V0ytFvdc=; fh=gm0A6EtasJwovXfz1TpeYfkY+4H0EN5E4rSCpite+Dk=; b=Eg8Y3A4PjrY/EovsTeIvBs8rqoNQan7Txm/S5cS8fs9R3v2nJI97olKyRctBDPtt0z Rpid64UzwQ25Uqmsvxk5wOZiJJ8yn5C5JkJu/zvsrarfJA9xgNpzZUJOvY0Lils+7Qnl RaFnMdmPLHKtgFkCk6+YUMYtFJ9KXdLBPfO6agtV7uX0c8lRmLg2xqxpL2ZXaqgSHcv7 zH57IW1j73GfAUcW7JRgZuhQF7BBMK8SmaDI00pc6IaQQc4VdTs2TJ2Sfgo9T8E2nLpc FuSFZWoQhSaL8S5nFZJ/+RiZStGWIpn4ghAAfJ04UrLFpKt/Uxd9Sv/BAMe3iSOuub7j 1P/g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=KvkNphZw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from agentk.vger.email (agentk.vger.email. [23.128.96.32]) by mx.google.com with ESMTPS id gq13-20020a17090b104d00b002534f4ce2b6si4110625pjb.125.2023.11.17.05.18.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Nov 2023 05:18:48 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=KvkNphZw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id 5DEE181F8FC2; Fri, 17 Nov 2023 05:18:39 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346064AbjKQNS1 (ORCPT + 30 others); Fri, 17 Nov 2023 08:18:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346030AbjKQNSY (ORCPT ); Fri, 17 Nov 2023 08:18:24 -0500 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4BA26D57; Fri, 17 Nov 2023 05:18:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700227101; x=1731763101; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RidyZbnJH2WdtltNPSz30z+b1yF96itdW/+pcCRzRqI=; b=KvkNphZwcQJDJPzACTFBEPDxSYNRnFcW9d8eykHnG0qqJxusfSZrpLD8 cZKoaeDM7/kKj/6XWfqtaOIypnGd0rZOtMHoMAQj6+mvxJHKRYMgS0h3L VvhIz/XasdEfnAS/8/RAL/QPOLRU0PRpQWsco72StfmM4pIvoHpsPzSVG l/GR4RhSVPNoQ0b5sniLBfVnIDGEz/LZ9wHrvFzUR6yBrGn3cEBbCV/QZ G6tpSRq9bVWyn1quUFa3DG5JIEMYYDosnPha42LYgYO3FfBuvEdmHLbyg oleSUcnHPZyEsJRPln3QO1A4OCUaW8dEl2lcWWnedPZfekwCYZ9JmpZn6 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10896"; a="381685614" X-IronPort-AV: E=Sophos;i="6.04,206,1695711600"; d="scan'208";a="381685614" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2023 05:18:20 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10896"; a="794831206" X-IronPort-AV: E=Sophos;i="6.04,206,1695711600"; d="scan'208";a="794831206" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga008.jf.intel.com with ESMTP; 17 Nov 2023 05:18:20 -0800 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, xin.zeng@intel.com, yan.y.zhao@intel.com Subject: [PATCH v7 3/3] iommu/vt-d: Add iotlb flush for nested domain Date: Fri, 17 Nov 2023 05:18:16 -0800 Message-Id: <20231117131816.24359-4-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231117131816.24359-1-yi.l.liu@intel.com> References: <20231117131816.24359-1-yi.l.liu@intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Fri, 17 Nov 2023 05:18:39 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782817360919434474 X-GMAIL-MSGID: 1782817360919434474 This implements the .cache_invalidate_user() callback to support iotlb flush for nested domain. Signed-off-by: Lu Baolu Signed-off-by: Yi Liu --- drivers/iommu/intel/nested.c | 54 ++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c index b5a5563ab32c..44ad48db7ea0 100644 --- a/drivers/iommu/intel/nested.c +++ b/drivers/iommu/intel/nested.c @@ -73,9 +73,63 @@ static void intel_nested_domain_free(struct iommu_domain *domain) kfree(to_dmar_domain(domain)); } +static void domain_flush_iotlb_psi(struct dmar_domain *domain, + u64 addr, unsigned long npages) +{ + struct iommu_domain_info *info; + unsigned long i; + + xa_for_each(&domain->iommu_array, i, info) + iommu_flush_iotlb_psi(info->iommu, domain, + addr >> VTD_PAGE_SHIFT, npages, 1, 0); +} + +static int intel_nested_cache_invalidate_user(struct iommu_domain *domain, + struct iommu_user_data_array *array, + u32 *cerror_idx) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + struct iommu_hwpt_vtd_s1_invalidate inv_info; + u32 index; + int ret; + + /* REVISIT: + * VT-d has defined ITE, ICE, IQE for invalidation failure per hardware, + * but no error code yet, so just set the error code to be 0. + */ + *cerror_idx = 0; + + for (index = 0; index < array->entry_num; index++) { + ret = iommu_copy_struct_from_user_array(&inv_info, array, + IOMMU_HWPT_DATA_VTD_S1, + index, __reserved); + if (ret) { + pr_err_ratelimited("Failed to fetch invalidation request\n"); + break; + } + + if (inv_info.__reserved || (inv_info.flags & ~IOMMU_VTD_INV_FLAGS_LEAF) || + !IS_ALIGNED(inv_info.addr, VTD_PAGE_SIZE)) { + ret = -EINVAL; + break; + } + + if (inv_info.addr == 0 && inv_info.npages == -1) + intel_flush_iotlb_all(domain); + else + domain_flush_iotlb_psi(dmar_domain, + inv_info.addr, inv_info.npages); + } + + array->entry_num = index; + + return ret; +} + static const struct iommu_domain_ops intel_nested_domain_ops = { .attach_dev = intel_nested_attach_dev, .free = intel_nested_domain_free, + .cache_invalidate_user = intel_nested_cache_invalidate_user, }; struct iommu_domain *intel_nested_domain_alloc(struct iommu_domain *parent,