On 26/05/2015 17:49, Alexey Kardashevskiy wrote:
>>
>> It's very little used, but that's just because it's not too common.
>> There's nothing wrong with it. :)
>>
>> If you do del/set_size/add, you may want to put a
>> memory_region_transaction_{begin,commit} around the whole dance.
>
>
> Here I lost you again :)
> Why? These are IOMMU MRs -> they are dynamic, what will begin()/commit()
> change here?
If you don't add them, the memory core may create two or three different
flatviews. With begin/commit, it will only do one change. It's just an
optimization.
Paolo
