Re: [PATCH v2 0/7] MR5128: winevulkan: Use VK_EXT_map_memory_placed for memory mapping on wow64.

[Georg Lehmann (＠DadSchoorse)]

> Are you sure about that? I don't see it explicitly prohibited and it doesn't seem to cause problem in my testing. This code could use a bit more sharing between code paths, so I refactored it and avoided duplicates, but there is a similar thing in `wine_vk_instance_convert_create_info` (in which we probably want to make `VK_KHR_external_memory_capabilities` optional now).

I thought I was sure, but I can't find anything in the spec either.