linux-kernel - Re: use generic DMA mapping code in powerpc V4

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Message-ID: <47bff9d1-7001-4d92-4ad1-e24215b56555@xenosoft.de>
Date:   Tue, 12 Feb 2019 20:31:56 +0100
From:   Christian Zigotzky <chzigotzky@...osoft.de>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-arch@...r.kernel.org,
        Darren Stevens <darren@...vens-zone.net>,
        linux-kernel@...r.kernel.org, Julian Margetson <runaway@...dw.ms>,
        linux-mm@...ck.org, iommu@...ts.linux-foundation.org,
        Paul Mackerras <paulus@...ba.org>,
        Olof Johansson <olof@...om.net>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: use generic DMA mapping code in powerpc V4

On 12 February 2019 at 4:25PM, Christoph Hellwig wrote:
> On Tue, Feb 12, 2019 at 01:42:56PM +0100, Christian Zigotzky wrote:
>> On 11 February 2019 at 08:38AM, Christoph Hellwig wrote:
>>> On Sun, Feb 10, 2019 at 01:00:20PM +0100, Christian Zigotzky wrote:
>>>> I tested the whole series today. The kernels boot and the P.A. Semi
>>>> Ethernet works! :-) Thanks a lot!
>>>>
>>>> I also tested it in a virtual e5500 QEMU machine today. Unfortunately the
>>>> kernel crashes.
>>> This looks like a patch I fixed in mainline a while ago, but which
>>> the powerpc tree didn't have yet.
>>>
>>> I've cherry picked this commit
>>> ("swiotlb: clear io_tlb_start and io_tlb_end in swiotlb_exit")
>>>
>>> and added it to the powerpc-dma.6 tree, please retry with that one.
>>>
>> Hello Christoph,
>>
>> Have you added it to the powerpc-dma.6 tree yet? The last commit was 4 days
>> ago.
> I added it, but forgot to push it out.  It is there now, sorry:
>
> http://git.infradead.org/users/hch/misc.git/commitdiff/2cf0745b7420af4a3e871d5a970a45662dfae69c
>
Hi Christoph

Many thanks! Your Git kernel works in a virtual e5500 machine now! :-)

I think we have reached the end of testing! All things are working with 
your DMA updates.

I am looking forward to test your DMA changes in the next merge window 
again. :-)

Cheers
Christian