From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758704AbZEVMYJ (ORCPT ); Fri, 22 May 2009 08:24:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758477AbZEVMWa (ORCPT ); Fri, 22 May 2009 08:22:30 -0400 Received: from outbound-dub.frontbridge.com ([213.199.154.16]:21892 "EHLO IE1EHSOBE004.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758212AbZEVMWX (ORCPT ); Fri, 22 May 2009 08:22:23 -0400 X-BigFish: VPS1(zzzz1202hzzz32i65h) X-Spam-TCS-SCL: 4:0 X-WSS-ID: 0KK1P0Z-01-JR5-01 From: Joerg Roedel To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org CC: Joerg Roedel Subject: [PATCH 10/12] amd-iommu: disable round-robin allocator for CONFIG_IOMMU_STRESS Date: Fri, 22 May 2009 14:21:31 +0200 Message-ID: <1242994893-28902-11-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <1242994893-28902-1-git-send-email-joerg.roedel@amd.com> References: <1242994893-28902-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 22 May 2009 12:21:33.0064 (UTC) FILETIME=[D7D4C880:01C9DAD7] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ impact: put high load on iommu tlb to find stale entry bugs ] Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 31d56c3..543822b 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -783,6 +783,11 @@ static unsigned long dma_ops_alloc_addresses(struct device *dev, { unsigned long address; +#ifdef CONFIG_IOMMU_STRESS + dom->next_address = 0; + dom->need_flush = true; +#endif + address = dma_ops_area_alloc(dev, dom, pages, align_mask, dma_mask, dom->next_address); -- 1.6.3.1