linux-kernel - Re: 2.6.25 DMA: Out of SW-IOMMU space

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Date:	Sat, 23 Aug 2008 18:23:12 +0300
From:	Jari Aalto <jari.aalto@...k.fi>
To:	linux-kernel@...r.kernel.org
Subject:  Re: 2.6.25 DMA: Out of SW-IOMMU space - Asus M2N32 AMD 8GB memory

Alistair John Strachan <alistair@...zero.co.uk> writes:

> On Saturday 23 August 2008 13:31:03 Krzysztof Halasa wrote:
>
>> Jari Aalto <jari.aalto@...te.net> writes:
>> >         [1] Aug 21 11:01:19 jondo kernel: [174628.275859] DMA: Out of
>> > SW-IOMMU space for 65536 bytes at device 0000:00:0d.0 model name      :
>> > AMD Athlon(tm) X2 Dual Core Processor
>> >         BE-2400
>
> Agreed, you shouldn't be using the SW-IOMMU on this processor.

So the correct boot paramer is?

  imoou=off,noagp,noaperture

no swiotlb setting at all?

> That said, do you use the r8169 driver with jumbo frames enabled? Francois
> Romieu just fixed a leak in it that affected Intel platforms (because some
> have no hardware IOMMU).

I'm using the onboard WiFi:

$ lsmod | grep rtl
rtl8187                39424  0

$ dmesg ...

[    2.758861] usb 1-9: new full speed USB device using ohci_hcd and address 4
[    2.978258] usb 1-9: configuration #1 chosen from 1 choice
[    2.985369] usb 1-9: New USB device found, idVendor=0bda, idProduct=8187
[    2.985372] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    2.985374] usb 1-9: Product: RTL8187_Wireless
[    2.985376] usb 1-9: Manufacturer: Manufacturer_Realtek_RTL8187_
[    2.985378] usb 1-9: SerialNumber: 0015AF0B59A6

I'm not sure how it maps to pci -nn:

00:04.0 PCI bridge [0604]: nVidia Corporation C51 PCI Express Bridge [10de:02fb] (rev a1)
00:09.0 ISA bridge [0601]: nVidia Corporation MCP55 LPC Bridge [10de:0360] (rev a2)
00:09.1 SMBus [0c05]: nVidia Corporation MCP55 SMBus [10de:0368] (rev a2)
00:0a.0 USB Controller [0c03]: nVidia Corporation MCP55 USB Controller [10de:036c] (rev a1)
00:0a.1 USB Controller [0c03]: nVidia Corporation MCP55 USB Controller [10de:036d] (rev a2)
00:0e.0 PCI bridge [0604]: nVidia Corporation MCP55 PCI bridge [10de:0370] (rev a2)
00:10.0 Bridge [0680]: nVidia Corporation MCP55 Ethernet [10de:0373] (rev a2)
00:11.0 Bridge [0680]: nVidia Corporation MCP55 Ethernet [10de:0373] (rev a2)
00:16.0 PCI bridge [0604]: nVidia Corporation MCP55 PCI Express bridge [10de:0375] (rev a2)

Thank you,
Jari

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