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Subject: Re: use generic DMA mapping code in powerpc V4
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 12 Dec 2018 11:47:16 +1100
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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
Message-ID: <20181212004716.CYiK7SudWBXh1lD8hrb_zPs_DE7E5KUD3T0yrT4w1v4@z>

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.