netdev - RE: atl1c: DMA: Out of SW-IOMMU space

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Date:	Sun, 3 Mar 2013 01:48:06 +0000
From:	"Huang, Xiong" <xiong@....qualcomm.com>
To:	Andre Heider <a.heider@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: atl1c: DMA: Out of SW-IOMMU space

There is another patch follows commit ac574804d412047e52de4dd887615cc88f58aeb0, would you have a try ?

Thanks
Xiong 

> -----Original Message-----
> From: Andre Heider [mailto:a.heider@...il.com]
> Sent: Sunday, March 03, 2013 1:29 AM
> To: netdev@...r.kernel.org; Huang, Xiong
> Subject: atl1c: DMA: Out of SW-IOMMU space
> 
> The problem doesn't exist on v3.8-rc7.
> 
> The only atl1c commit in v3.8-rc7..v3.8 is:
> 
> commit ac574804d412047e52de4dd887615cc88f58aeb0
> Author: Huang, Xiong <xiong@....qualcomm.com>
> Date:   Mon Feb 11 14:44:40 2013 +0000
> 
>     atl1c: add error checking for pci_map_single functions
> 
>     it is reported that code hit DMA-API errors on 3.8-rc6+,
>     (see https://bugzilla.redhat.com/show_bug.cgi?id=908436, and
>          https://bugzilla.redhat.com/show_bug.cgi?id=908550)
> 
>     this patch just adds error handler for
>         pci_map_single and skb_frag_dma_map.
> 
>     Signed-off-by: xiong <xiong@....qualcomm.com>
>     Signed-off-by: David S. Miller <davem@...emloft.net>
> 
> Reverting that on top of v3.8 seems to fix the problem in my little testing, so
> it sounds like that fix introduced a iommu leak?
> 
> Thanks,
> Andre
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