From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD668ECDFAA for ; Sat, 14 Jul 2018 07:57:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BE40208CE for ; Sat, 14 Jul 2018 07:57:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7BE40208CE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727051AbeGNIP0 (ORCPT ); Sat, 14 Jul 2018 04:15:26 -0400 Received: from mga02.intel.com ([134.134.136.20]:11971 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726412AbeGNIPZ (ORCPT ); Sat, 14 Jul 2018 04:15:25 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Jul 2018 00:57:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,351,1526367600"; d="scan'208";a="54966332" Received: from allen-box.sh.intel.com ([10.239.48.172]) by fmsmga008.fm.intel.com with ESMTP; 14 Jul 2018 00:57:10 -0700 From: Lu Baolu To: Joerg Roedel , David Woodhouse Cc: ashok.raj@intel.com, sanjay.k.kumar@intel.com, jacob.jun.pan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, peterx@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu , Jacob Pan Subject: [PATCH v5 3/9] iommu/vt-d: Apply global PASID in SVA Date: Sat, 14 Jul 2018 15:46:56 +0800 Message-Id: <1531554422-6874-4-git-send-email-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531554422-6874-1-git-send-email-baolu.lu@linux.intel.com> References: <1531554422-6874-1-git-send-email-baolu.lu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch applies the global pasid name space in the shared virtual address (SVA) implementation. Cc: Ashok Raj Cc: Jacob Pan Cc: Kevin Tian Cc: Liu Yi L Signed-off-by: Lu Baolu Reviewed-by: Kevin Tian Reviewed-by: Liu Yi L --- drivers/iommu/intel-svm.c | 22 +++++++++++----------- include/linux/intel-iommu.h | 1 - 2 files changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 36cc1d1..56e65d0 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -26,6 +26,8 @@ #include #include +#include "intel-pasid.h" + #define PASID_ENTRY_P BIT_ULL(0) #define PASID_ENTRY_FLPM_5LP BIT_ULL(9) #define PASID_ENTRY_SRE BIT_ULL(11) @@ -85,8 +87,6 @@ int intel_svm_alloc_pasid_tables(struct intel_iommu *iommu) iommu->name); } - idr_init(&iommu->pasid_idr); - return 0; } @@ -102,7 +102,7 @@ int intel_svm_free_pasid_tables(struct intel_iommu *iommu) free_pages((unsigned long)iommu->pasid_state_table, order); iommu->pasid_state_table = NULL; } - idr_destroy(&iommu->pasid_idr); + return 0; } @@ -392,9 +392,9 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ pasid_max = iommu->pasid_max; /* Do not use PASID 0 in caching mode (virtualised IOMMU) */ - ret = idr_alloc(&iommu->pasid_idr, svm, - !!cap_caching_mode(iommu->cap), - pasid_max - 1, GFP_KERNEL); + ret = intel_pasid_alloc_id(svm, + !!cap_caching_mode(iommu->cap), + pasid_max - 1, GFP_KERNEL); if (ret < 0) { kfree(svm); kfree(sdev); @@ -410,7 +410,7 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_ if (mm) { ret = mmu_notifier_register(&svm->notifier, mm); if (ret) { - idr_remove(&svm->iommu->pasid_idr, svm->pasid); + intel_pasid_free_id(svm->pasid); kfree(svm); kfree(sdev); goto out; @@ -460,7 +460,7 @@ int intel_svm_unbind_mm(struct device *dev, int pasid) if (!iommu || !iommu->pasid_table) goto out; - svm = idr_find(&iommu->pasid_idr, pasid); + svm = intel_pasid_lookup_id(pasid); if (!svm) goto out; @@ -485,7 +485,7 @@ int intel_svm_unbind_mm(struct device *dev, int pasid) svm->iommu->pasid_table[svm->pasid].val = 0; wmb(); - idr_remove(&svm->iommu->pasid_idr, svm->pasid); + intel_pasid_free_id(svm->pasid); if (svm->mm) mmu_notifier_unregister(&svm->notifier, svm->mm); @@ -520,7 +520,7 @@ int intel_svm_is_pasid_valid(struct device *dev, int pasid) if (!iommu || !iommu->pasid_table) goto out; - svm = idr_find(&iommu->pasid_idr, pasid); + svm = intel_pasid_lookup_id(pasid); if (!svm) goto out; @@ -618,7 +618,7 @@ static irqreturn_t prq_event_thread(int irq, void *d) if (!svm || svm->pasid != req->pasid) { rcu_read_lock(); - svm = idr_find(&iommu->pasid_idr, req->pasid); + svm = intel_pasid_lookup_id(req->pasid); /* It *can't* go away, because the driver is not permitted * to unbind the mm while any page faults are outstanding. * So we only need RCU to protect the internal idr code. */ diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index e1e1938..2ff1519 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -420,7 +420,6 @@ struct intel_iommu { struct pasid_state_entry *pasid_state_table; struct page_req_dsc *prq; unsigned char prq_name[16]; /* Name for PRQ interrupt */ - struct idr pasid_idr; u32 pasid_max; #endif struct q_inval *qi; /* Queued invalidation info */ -- 2.7.4