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

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Message-ID:  <874p5a24gt.fsf@jondo.cante.net>
Date:	Sun, 24 Aug 2008 11:37:54 +0300
From:	Jari Aalto <jari.aalto@...te.net>
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
>>
>> grep GART_IOMMU .config
>
> Agreed, you shouldn't be using the SW-IOMMU on this processor.

Are these the correct boot options, without swiotlb?

   iommu=noagp,noaperture,off

Or just:

   iommu=off

> 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).

The onboard WiFi is in use:

        $ 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

Jari

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