linux-kernel - Re: [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap

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Message-ID: <20090408140521.GB12931@elte.hu>
Date:	Wed, 8 Apr 2009 16:05:21 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	beckyb@...nel.crashing.org, linux-kernel@...r.kernel.org,
	jeremy@...p.org, ian.campbell@...rix.com
Subject: Re: [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap_single


* Kumar Gala <galak@...nel.crashing.org> wrote:

>
> On Apr 8, 2009, at 7:43 AM, Ingo Molnar wrote:
>
>>
>> * FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> wrote:
>>
>>>> Same here.  It makes it easier for us to work on the powerpc arch
>>>> specific changes for .31 if we can get these into .30.  What are you
>>>> looking at for .31?
>>>
>>> I need to finish the dma_mapping_ops cleanups and cross-arch
>>> unification stuff:
>>>
>>> http://marc.info/?l=linux-kernel&m=123827903216314&w=2
>>>
>>> But the changes to swiotlb is minor. BTW, I have the patches for
>>> powerpc too.
>>>
>>>> Ingo, any comments on that?
>>
>> if it's genuine fixes we can do it post-rc1, but it looks a tad wide
>> for that:
>>
>> arch/x86/kernel/pci-swiotlb.c |    2 +-
>> include/linux/swiotlb.h       |    3 +-
>> lib/swiotlb.c                 |  115 +++++++++++++++++++++ 
>> +-------------------
>>
>> the patches came right in the merge window - that's too late for
>> IOMMU bits, the patch cutoff is generally the beginning of the merge
>> window. (Which was on March 23 in this window)
>
> Fair.
>
>> But i can queue them up in the .31 queue if it has all the Acks from
>> you folks. Becky, mind resending the latest version, with all the
>> acks in place?
>
> I can do this in Becky's abscense this week.  The only "acks" I've 
> seen are from FUJITA Tomonori.

_your_ ack (or signoff) counts too - so to me it's plural :-)

> Can we ask there be a unique swiotlb branch in your tree to make 
> it easier for us to continue additional swiotlb work as well as 
> arch specific work.

yes - tip:core/iommu is already distinct from tip:x86/iommu and is 
intended for such more generic patches. It has no patches pending 
right now (it just got all merged upstream) - so please use an 
upstream base - 2.6.30-rc1 would be a good starting point.

Thanks,

	Ingo
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