Re: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-12 Thread Bjorn Helgaas
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. > >

Re: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-12 Thread Bjorn Helgaas
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. > >

Re: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-10 Thread Alex Williamson
On Mon, 10 Apr 2017 21:01:27 -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

Re: [PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-10 Thread Alex Williamson
On Mon, 10 Apr 2017 21:01:27 -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. > >

[PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-10 Thread Jarod Wilson
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:

[PATCH] pci/quirks: ITE 8893 needs quirk_use_pcie_bridge_dma_alias

2017-04-10 Thread Jarod Wilson
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-...@vger.kernel.org CC: Alex