From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754924AbdDLReA (ORCPT ); Wed, 12 Apr 2017 13:34:00 -0400 Received: from mail.kernel.org ([198.145.29.136]:42832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752372AbdDLRdy (ORCPT ); Wed, 12 Apr 2017 13:33:54 -0400 Date: Wed, 12 Apr 2017 12:33:50 -0500 From: Bjorn Helgaas To: Jarod Wilson Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Alex Williamson , Bjorn Helgaas Subject: Re: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias Message-ID: <20170412173350.GG25197@bhelgaas-glaptop.roam.corp.google.com> References: <20170411010127.57858-1-jarod@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170411010127.57858-1-jarod@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 10, 2017 at 09:01:27PM -0400, Jarod Wilson wrote: > 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 Applied with Alex's reviewed-by to pci/iommu for v4.12, thanks! > --- > 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 >