> As Linus mentioned, main problem is to figure out the correct attribute
quoted text
> for ioremap() which doesn't specify the actual attribute to be used.

In this case the correct attribute is the one of the underlying MTRR.

And if it conflicts with some other mapping that overrides an MTRR
the driver was always broken and it should probably error out and be
reevaluated/fixed.

-Andi
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