From patchwork Tue Jul 28 06:34:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 11688425 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D1B2D6C1 for ; Tue, 28 Jul 2020 06:38:08 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B1E1B21744 for ; Tue, 28 Jul 2020 06:38:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B1E1B21744 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:35908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k0JFX-0007hB-U2 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 28 Jul 2020 02:38:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50950) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k0J65-0001pX-Af for qemu-devel@nongnu.org; Tue, 28 Jul 2020 02:28:21 -0400 Received: from mga09.intel.com ([134.134.136.24]:37270) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k0J63-0002B0-EG for qemu-devel@nongnu.org; Tue, 28 Jul 2020 02:28:20 -0400 IronPort-SDR: L2PAyOZYRHL8U6Df2/RDB2qp2kR5XVTCV+dnGwCTH3zGrdEN9mxNGruQypB8Amkd0L/zDvA9xp e/B0J5NWzvUw== X-IronPort-AV: E=McAfee;i="6000,8403,9695"; a="152412076" X-IronPort-AV: E=Sophos;i="5.75,405,1589266800"; d="scan'208";a="152412076" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jul 2020 23:27:57 -0700 IronPort-SDR: LdqG82WK/VBHslQ5CCMfRI4fIkplb8kpADA9QGaeaJHnkrQCYPNOq9fUhFeUtWXQ7eOEVE6UBr P/g68B3p4smA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,405,1589266800"; d="scan'208";a="394233113" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by fmsmga001.fm.intel.com with ESMTP; 27 Jul 2020 23:27:57 -0700 From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com, jasowang@redhat.com Subject: [RFC v9 24/25] intel_iommu: process PASID-based Device-TLB invalidation Date: Mon, 27 Jul 2020 23:34:17 -0700 Message-Id: <1595918058-33392-25-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1595918058-33392-1-git-send-email-yi.l.liu@intel.com> References: <1595918058-33392-1-git-send-email-yi.l.liu@intel.com> Received-SPF: pass client-ip=134.134.136.24; envelope-from=yi.l.liu@intel.com; helo=mga09.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/28 02:27:45 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , Eduardo Habkost , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , pbonzini@redhat.com, hao.wu@intel.com, Richard Henderson , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This patch adds an empty handling for PASID-based Device-TLB invalidation. For now it is enough as it is not necessary to propagate it to host for passthru device and also there is no emulated device has device tlb. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Yi Sun Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Reviewed-by: Peter Xu Signed-off-by: Liu Yi L --- hw/i386/intel_iommu.c | 18 ++++++++++++++++++ hw/i386/intel_iommu_internal.h | 1 + 2 files changed, 19 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index db4460a..11f815d 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3213,6 +3213,17 @@ static bool vtd_process_inv_iec_desc(IntelIOMMUState *s, return true; } +static bool vtd_process_device_piotlb_desc(IntelIOMMUState *s, + VTDInvDesc *inv_desc) +{ + /* + * no need to handle it for passthru device, for emulated + * devices with device tlb, it may be required, but for now, + * return is enough + */ + return true; +} + static bool vtd_process_device_iotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { @@ -3334,6 +3345,13 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) } break; + case VTD_INV_DESC_DEV_PIOTLB: + trace_vtd_inv_desc("device-piotlb", inv_desc.hi, inv_desc.lo); + if (!vtd_process_device_piotlb_desc(s, &inv_desc)) { + return false; + } + break; + case VTD_INV_DESC_DEVICE: trace_vtd_inv_desc("device", inv_desc.hi, inv_desc.lo); if (!vtd_process_device_iotlb_desc(s, &inv_desc)) { diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 08ff58e..9b4fc67 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -405,6 +405,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descriptor */ #define VTD_INV_DESC_PIOTLB 0x6 /* PASID-IOTLB Invalidate Desc */ #define VTD_INV_DESC_PC 0x7 /* PASID-cache Invalidate Desc */ +#define VTD_INV_DESC_DEV_PIOTLB 0x8 /* PASID-based-DIOTLB inv_desc*/ #define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descriptor */ /* Masks for Invalidation Wait Descriptor*/