From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752677AbdDKBBi (ORCPT ); Mon, 10 Apr 2017 21:01:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43412 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750761AbdDKBBg (ORCPT ); Mon, 10 Apr 2017 21:01:36 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com D7E70EC2DB Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jarod@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com D7E70EC2DB From: Jarod Wilson To: linux-kernel@vger.kernel.org Cc: Jarod Wilson , linux-pci@vger.kernel.org, Alex Williamson , Bjorn Helgaas Subject: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias Date: Mon, 10 Apr 2017 21:01:27 -0400 Message-Id: <20170411010127.57858-1-jarod@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 11 Apr 2017 01:01:36 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This bridge has the same problems as the ITE 8892, which were resulting in crippling an older PCI 1Gbps NIC down to 45Mbps throughput with IOMMU and VT-d enabled. With the patch, this old e1000 goes back up to ~900Mbps. Suggested-by: Alex Williamson CC: linux-pci@vger.kernel.org CC: Alex Williamson CC: Bjorn Helgaas Signed-off-by: Jarod Wilson --- drivers/pci/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 9236e40ac055..c95fbf2431f8 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3914,6 +3914,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080, DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias); /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); +/* ITE 8893 has the same problem as the 8892 */ +DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias); /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */ DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias); -- 2.12.1