From patchwork Wed May 22 06:23:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13670499 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D2BC7C25B78 for ; Wed, 22 May 2024 06:31:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s9fRv-0006RU-7E; Wed, 22 May 2024 02:27:43 -0400 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 1s9fRI-0005UD-C0 for qemu-devel@nongnu.org; Wed, 22 May 2024 02:27:04 -0400 Received: from mgamail.intel.com ([192.198.163.7]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s9fRG-0006je-7J for qemu-devel@nongnu.org; Wed, 22 May 2024 02:27:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716359222; x=1747895222; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MvDqM9kfp1JUceyLOpnfxHWaYOB5yCLfdRu6z6ix0uE=; b=Mv9d9BmPvGxue1GDEYH/3HS0YswicCg0V2PSaXtvU61yqg5BY+syYzTJ C6O0ft4rHTM9O1OmNjMsYkc527TpcMYrljtIdv99JcpDIJBLqa7lQ5e8W v3BSMRFlUufBLsO81DWD6J6MPhOZsOaaMlq5/Rs5g9yIj2iqYjIjCp5NB KFY7ZyrYd2rCXyKj1L15zI2xQL3+bj0v2c7wx28/F964/FGPBTNgtoqEL JixpKwCyhZFU9WZr8+cDtNQ0UOOF0rHYHI8pTSZ/WvMd+xom0A+ALVCkx nRXWR3ucIH0yaigDj0wJfNGxmb4yHP0H9KtENfAYqggSJkHTt+QQLrz3C w==; X-CSE-ConnectionGUID: m7yLMZqURTSzc72VVZ6QNA== X-CSE-MsgGUID: r91qBpaUT9KQ3WHL0Mhpmg== X-IronPort-AV: E=McAfee;i="6600,9927,11079"; a="37972709" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="37972709" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 23:27:00 -0700 X-CSE-ConnectionGUID: /oHbJ0bmSHKClRD1Qcfdjg== X-CSE-MsgGUID: bQIQB1kbQjulb/D3IopSaw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="33597941" Received: from unknown (HELO SPR-S2600BT.bj.intel.com) ([10.240.192.124]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 23:26:56 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Yi Sun , Paolo Bonzini , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum Subject: [PATCH rfcv2 14/17] intel_iommu: piotlb invalidation should notify unmap Date: Wed, 22 May 2024 14:23:10 +0800 Message-Id: <20240522062313.453317-15-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240522062313.453317-1-zhenzhong.duan@intel.com> References: <20240522062313.453317-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.7; 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, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This is used by some emulated devices which caches address translation result. When piotlb invalidation issued in guest, those caches should be refreshed. Signed-off-by: Yi Sun Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu.c | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index de4e8afcf9..e07daaba99 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2890,7 +2890,7 @@ static void vtd_piotlb_pasid_invalidate(IntelIOMMUState *s, continue; } - if (!s->scalable_modern) { + if (!s->scalable_modern || !vtd_as_has_map_notifier(vtd_as)) { vtd_address_space_sync(vtd_as); } } @@ -2902,6 +2902,9 @@ static void vtd_piotlb_page_invalidate(IntelIOMMUState *s, uint16_t domain_id, bool ih) { VTDIOTLBPageInvInfo info; + VTDAddressSpace *vtd_as; + VTDContextEntry ce; + hwaddr size = (1 << am) * VTD_PAGE_SIZE; info.domain_id = domain_id; info.pasid = pasid; @@ -2912,6 +2915,36 @@ static void vtd_piotlb_page_invalidate(IntelIOMMUState *s, uint16_t domain_id, g_hash_table_foreach_remove(s->iotlb, vtd_hash_remove_by_page_piotlb, &info); vtd_iommu_unlock(s); + + QLIST_FOREACH(vtd_as, &s->vtd_as_with_notifiers, next) { + if (!vtd_dev_to_context_entry(s, pci_bus_num(vtd_as->bus), + vtd_as->devfn, &ce) && + domain_id == vtd_get_domain_id(s, &ce, vtd_as->pasid)) { + uint32_t rid2pasid = VTD_CE_GET_RID2PASID(&ce); + IOMMUTLBEvent event; + + if ((vtd_as->pasid != PCI_NO_PASID || pasid != rid2pasid) && + vtd_as->pasid != pasid) { + continue; + } + + /* + * Page-Selective-within-PASID PASID-based-IOTLB Invalidation + * does not flush stage-2 entries. See spec section 6.5.2.4 + */ + if (!s->scalable_modern) { + continue; + } + + event.type = IOMMU_NOTIFIER_UNMAP; + event.entry.target_as = &address_space_memory; + event.entry.iova = addr; + event.entry.perm = IOMMU_NONE; + event.entry.addr_mask = size - 1; + event.entry.translated_addr = 0; + memory_region_notify_iommu(&vtd_as->iommu, 0, event); + } + } } static bool vtd_process_piotlb_desc(IntelIOMMUState *s,