From patchwork Fri Jul 5 11:01:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 11033671 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 35AC2912 for ; Sat, 6 Jul 2019 11:19:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2812E289BC for ; Sat, 6 Jul 2019 11:19:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1C37D289CB; Sat, 6 Jul 2019 11:19:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=2.0 tests=BAYES_00,DATE_IN_PAST_24_48, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A4B2D289BC for ; Sat, 6 Jul 2019 11:19:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726822AbfGFLTR (ORCPT ); Sat, 6 Jul 2019 07:19:17 -0400 Received: from mga12.intel.com ([192.55.52.136]:5514 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726800AbfGFLTR (ORCPT ); Sat, 6 Jul 2019 07:19:17 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Jul 2019 04:19:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,458,1557212400"; d="scan'208";a="363355017" Received: from yiliu-dev.bj.intel.com ([10.238.156.139]) by fmsmga005.fm.intel.com with ESMTP; 06 Jul 2019 04:19:14 -0700 From: Liu Yi L To: qemu-devel@nongnu.org, mst@redhat.com, pbonzini@redhat.com, alex.williamson@redhat.com, peterx@redhat.com Cc: eric.auger@redhat.com, david@gibson.dropbear.id.au, tianyu.lan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, jun.j.tian@intel.com, yi.y.sun@intel.com, kvm@vger.kernel.org, Jacob Pan , Yi Sun Subject: [RFC v1 09/18] intel_iommu: process pasid cache invalidation Date: Fri, 5 Jul 2019 19:01:42 +0800 Message-Id: <1562324511-2910-10-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1562324511-2910-1-git-send-email-yi.l.liu@intel.com> References: <1562324511-2910-1-git-send-email-yi.l.liu@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds PASID cache flush emulation framework. Per Intel VT-d 3.0 spec, PASID cache invalidation under caching-mode provides a mechanism software Intel VT-d(vIOMMU) implementations to track guest PASID bind/unbind operations. This is a key part of vIOMMU support for guest SVA. And this patch only adds the frame of it. The detailed implementation relies on PASID records management implementation in vIOMMU, which will be covered in later patch of this series. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Yi Sun Signed-off-by: Liu Yi L --- hw/i386/intel_iommu.c | 40 +++++++++++++++++++++++++++++++++++----- hw/i386/intel_iommu_internal.h | 12 ++++++++++++ 2 files changed, 47 insertions(+), 5 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 3cf250d..ef13662 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2331,6 +2331,37 @@ static bool vtd_process_iotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) return true; } +static bool vtd_process_pasid_desc(IntelIOMMUState *s, + VTDInvDesc *inv_desc) +{ + if ((inv_desc->val[0] & VTD_INV_DESC_PASIDC_RSVD_VAL0) || + (inv_desc->val[1] & VTD_INV_DESC_PASIDC_RSVD_VAL1) || + (inv_desc->val[2] & VTD_INV_DESC_PASIDC_RSVD_VAL2) || + (inv_desc->val[3] & VTD_INV_DESC_PASIDC_RSVD_VAL3)) { + trace_vtd_inv_desc("non-zero-field-in-pc_inv_desc", + inv_desc->val[1], inv_desc->val[0]); + return false; + } + + switch (inv_desc->val[0] & VTD_INV_DESC_PASIDC_G) { + case VTD_INV_DESC_PASIDC_DSI: + break; + + case VTD_INV_DESC_PASIDC_PASID_SI: + break; + + case VTD_INV_DESC_PASIDC_GLOBAL: + break; + + default: + trace_vtd_inv_desc("invalid-inv-granu-in-pc_inv_desc", + inv_desc->val[1], inv_desc->val[0]); + return false; + } + + return true; +} + static bool vtd_process_inv_iec_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { @@ -2437,12 +2468,11 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) } break; - /* - * TODO: the entity of below two cases will be implemented in future series. - * To make guest (which integrates scalable mode support patch set in - * iommu driver) work, just return true is enough so far. - */ case VTD_INV_DESC_PC: + trace_vtd_inv_desc("pasid-cache", inv_desc.val[1], inv_desc.val[0]); + if (!vtd_process_pasid_desc(s, &inv_desc)) { + return false; + } break; case VTD_INV_DESC_PIOTLB: diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index f5a2f0d..e335800 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -436,6 +436,18 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_SPTE_LPAGE_L4_RSVD_MASK(aw) \ (0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM)) +#define VTD_INV_DESC_PASIDC_G (3ULL << 4) +#define VTD_INV_DESC_PASIDC_PASID(val) (((val) >> 32) & 0xfffffULL) +#define VTD_INV_DESC_PASIDC_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK) +#define VTD_INV_DESC_PASIDC_RSVD_VAL0 0xfff000000000ffc0ULL +#define VTD_INV_DESC_PASIDC_RSVD_VAL1 0xffffffffffffffffULL +#define VTD_INV_DESC_PASIDC_RSVD_VAL2 0xffffffffffffffffULL +#define VTD_INV_DESC_PASIDC_RSVD_VAL3 0xffffffffffffffffULL + +#define VTD_INV_DESC_PASIDC_DSI (0ULL << 4) +#define VTD_INV_DESC_PASIDC_PASID_SI (1ULL << 4) +#define VTD_INV_DESC_PASIDC_GLOBAL (3ULL << 4) + /* Information about page-selective IOTLB invalidate */ struct VTDIOTLBPageInvInfo { uint16_t domain_id;