On 09/20/16 at 02:42pm, Joerg Roedel wrote:
> On Thu, Sep 15, 2016 at 11:03:24PM +0800, Baoquan He wrote:
> > This enabling should have been done in normal kernel. It's unnecessary
> > to enable it again in kdump kernel.
> > 
> > And clean up the function comments of init_device_table_dma.
> 
> Well, no. We don't want to make any assumptions on what the previous
> kernel did and what it did not. The init_device_table_dma() code should
> run anyway.

Yes, right. I forget people could set amd_iommu=off in 1st kernel, but
remove it in kdump kernel. Will change and merge the comment clean up
into another patch.

> 

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