From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932520AbcGHLrM (ORCPT ); Fri, 8 Jul 2016 07:47:12 -0400 Received: from 8bytes.org ([81.169.241.247]:51676 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754710AbcGHLpf (ORCPT ); Fri, 8 Jul 2016 07:45:35 -0400 From: Joerg Roedel To: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, Suravee Suthikulpanit , Vincent.Wan@amd.com, Joerg Roedel Subject: [PATCH 17/20] iommu/amd: Use dev_data->domain in get_domain() Date: Fri, 8 Jul 2016 13:45:08 +0200 Message-Id: <1467978311-28322-18-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467978311-28322-1-git-send-email-joro@8bytes.org> References: <1467978311-28322-1-git-send-email-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joerg Roedel Using the cached value is much more efficient than calling into the IOMMU core code. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index e5f8e7f..4b17148 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2223,16 +2223,11 @@ static void queue_add(struct dma_ops_domain *dma_dom, static struct protection_domain *get_domain(struct device *dev) { struct protection_domain *domain; - struct iommu_domain *io_domain; if (!check_device(dev)) return ERR_PTR(-EINVAL); - io_domain = iommu_get_domain_for_dev(dev); - if (!io_domain) - return NULL; - - domain = to_pdomain(io_domain); + domain = get_dev_data(dev)->domain; if (!dma_ops_domain(domain)) return ERR_PTR(-EBUSY); -- 1.9.1