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[2620:137:e000::3:5]) by mx.google.com with ESMTPS id bd40-20020a056a0027a800b006cbb36b9060si4751880pfb.385.2023.12.02.01.56.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Dec 2023 01:56:10 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:5 as permitted sender) client-ip=2620:137:e000::3:5; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=dYmF9aQn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:5 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 groat.vger.email (Postfix) with ESMTP id B92C2807C64E; Sat, 2 Dec 2023 01:55:39 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232398AbjLBJzZ (ORCPT + 99 others); Sat, 2 Dec 2023 04:55:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232437AbjLBJzX (ORCPT ); Sat, 2 Dec 2023 04:55:23 -0500 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFD001A6; Sat, 2 Dec 2023 01:55:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701510929; x=1733046929; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=BZYTTtyQtvoxZgxXT0A+sCWE4cIHFzWJmMiUL2ynGlI=; b=dYmF9aQnVmkJu07WnrokIVdrrNK9YE4DbiE3Nqmtjm6cynHIf0YWYgH0 6BCgO/jI1g2n/b0zcjGw55hAujJNPX7Jb4R2uGd1gqgcmtCAYbdNxWAOY nqyJBC/15s6TjfQVxKrKedMxfKMR50TJimQ3Yob9z8x76AFWfKuhalSw+ zo/cXC/FT9IKNo9SHsuPeqcxsgfKOvAioRtHcfKzC2rfh562cLHnfTZy0 +6XkkyalKT9TAombryRzQEnIlB9zA9hdKuhCQhzePMvPAjJk05LtyS9Uv 2CVCsg86/1jnWJ/+yZKgKA5c00SakhhoMB7IoPgS0Wb7I4LFe2FZmKkMT Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10911"; a="393322196" X-IronPort-AV: E=Sophos;i="6.04,245,1695711600"; d="scan'208";a="393322196" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2023 01:55:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10911"; a="804337094" X-IronPort-AV: E=Sophos;i="6.04,245,1695711600"; d="scan'208";a="804337094" Received: from yzhao56-desk.sh.intel.com ([10.239.159.62]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2023 01:55:24 -0800 From: Yan Zhao To: iommu@lists.linux.dev, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: alex.williamson@redhat.com, jgg@nvidia.com, pbonzini@redhat.com, seanjc@google.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, dwmw2@infradead.org, yi.l.liu@intel.com, Yan Zhao Subject: [RFC PATCH 22/42] iommu/vt-d: Support cache invalidate of IOMMU_DOMAIN_KVM domain Date: Sat, 2 Dec 2023 17:26:30 +0800 Message-Id: <20231202092630.14764-1-yan.y.zhao@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231202091211.13376-1-yan.y.zhao@intel.com> References: <20231202091211.13376-1-yan.y.zhao@intel.com> 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 autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.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 (groat.vger.email [0.0.0.0]); Sat, 02 Dec 2023 01:55:39 -0800 (PST) Support invalidation of hardware TLBs on KVM invalidates mappings on domain of type IOMMU_DOMAIN_KVM. Signed-off-by: Yan Zhao --- drivers/iommu/intel/kvm.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/iommu/intel/kvm.c b/drivers/iommu/intel/kvm.c index 998d6daaf7ea1..56cb8f9bf1da0 100644 --- a/drivers/iommu/intel/kvm.c +++ b/drivers/iommu/intel/kvm.c @@ -62,10 +62,41 @@ static bool kvm_domain_enforce_cache_coherency(struct iommu_domain *domain) return true; } +static void domain_flush_iotlb_psi(struct dmar_domain *domain, + unsigned long iova, unsigned long size) +{ + struct iommu_domain_info *info; + unsigned long i; + + if (!IS_ALIGNED(size, VTD_PAGE_SIZE) || + !IS_ALIGNED(iova, VTD_PAGE_SIZE)) { + pr_err("Invalid KVM domain invalidation: iova=0x%lx, size=0x%lx\n", + iova, size); + return; + } + + xa_for_each(&domain->iommu_array, i, info) + iommu_flush_iotlb_psi(info->iommu, domain, + iova >> VTD_PAGE_SHIFT, + size >> VTD_PAGE_SHIFT, 1, 0); +} + +static void kvm_domain_cache_invalidate(struct iommu_domain *domain, + unsigned long iova, unsigned long size) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + + if (iova == 0 && size == -1UL) + intel_flush_iotlb_all(domain); + else + domain_flush_iotlb_psi(dmar_domain, iova, size); +} + static const struct iommu_domain_ops intel_kvm_domain_ops = { .attach_dev = intel_iommu_attach_device, .free = intel_iommu_domain_free, .enforce_cache_coherency = kvm_domain_enforce_cache_coherency, + .cache_invalidate_kvm = kvm_domain_cache_invalidate, }; struct iommu_domain * -- 2.17.1