On Thu, Jan 24, 2019 at 10:31:32AM +0800, Lu Baolu wrote:
> Commit 765b6a98c1de3 ("iommu/vt-d: Enumerate the scalable
> mode capability") enables VT-d scalable mode if hardware
> advertises the capability. As we will bring up different
> features and use cases to upstream in different patch
> series, it will leave some intermediate kernel versions
> which support partial features. Hence, end user might run
> into problems when they use such kernels on bare metals
> or virtualization environments.
I don't get it, can you be more specific about the problems that users
might run into? And is this patch needed as a fix for v5.0 or is it just
a precaution because future patches might break something for users?
Regards,
Joerg
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