Thread (166 messages) 166 messages, 7 authors, 2019-12-19

Re: use generic DMA mapping code in powerpc V4

From: Christoph Hellwig <hch@lst.de>
Date: 2019-01-19 13:02:31
Also in: linux-arch, linux-iommu, linux-mm, lkml 

On Sat, Jan 19, 2019 at 12:52:52PM +0100, Christian Zigotzky wrote:
Hi Christoph,

I have found a small workaround. If I add 'mem=3500M' to the boot arguments 
then it detects the SATA hard disk and boots without any problems.

X5000> setenv bootargs root=/dev/sda2 console=ttyS0,115200 mem=3500M
Interesting.  This suggest it is related to the use of ZONE_DMA by
the FSL SOCs that your board uses.  Let me investigate this a bit more.
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