On 2020/10/16 15:27, Hanjun Guo wrote:

quoted

The patch only takes the address limit field into account if its value 

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0.

Sorry I missed the if (*->memory_address_limit) check, thanks
for the reminding.

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Also, before commit 7fb89e1d44cb6aec ("ACPI/IORT: take _DMA methods
into account for named components"), the _DMA method was not taken
into account for named components at all, and only the IORT limit was
used, so I do not anticipate any problems with that.

Then this patch is fine to me.

Certainly we need to address Lorenzo's comments.

Thanks
Hanjun