Re: [PATCH 06/10] iommu/amd: Add functions copy_command_buffer/copy_event_buffer

[Joerg Roedel]

On Thu, Sep 24, 2015 at 02:37:32PM +0800, Baoquan He wrote:
> Copy command buffer and event buffer from the old to kdump kernel.
> 
> Still there are 2 problems:
>   1) Not very sure if this is necessary. If do not copy the old command buffer, and
> only set the newly allocated command buffer, is there anything wrong?

No, there is no need to copy command and event buffers. Just make sure
they get re-initialized and flush all iommu caches after setting the new
device table.


	Joerg

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