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Subject: Re: use generic DMA mapping code in powerpc V4
From:   Benjamin Herrenschmidt <benh@kernel.crashing.org>
To:     Christian Zigotzky <chzigotzky@xenosoft.de>,
        Christoph Hellwig <hch@lst.de>
Cc:     linux-arch@vger.kernel.org,
        Darren Stevens <darren@stevens-zone.net>,
        linux-kernel@vger.kernel.org, Julian Margetson <runaway@candw.ms>,
        linux-mm@kvack.org, iommu@lists.linux-foundation.org,
        Paul Mackerras <paulus@samba.org>,
        Olof Johansson <olof@lixom.net>, linuxppc-dev@lists.ozlabs.org
Date:   Wed, 12 Dec 2018 11:47:16 +1100
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On Tue, 2018-12-11 at 19:17 +0100, Christian Zigotzky wrote:
> X5000 (P5020 board): U-Boot loads the kernel and the dtb file. Then the 
> kernel starts but it doesn't find any hard disks (partitions). That 
> means this is also the bad commit for the P5020 board.

What are the disks hanging off ? A PCIe device of some sort ?

Can you send good & bad dmesg logs ?

Ben.