>>> On 03.07.17 at 10:40, <prosku...@sec.in.tum.de> wrote:
> On 06/27/2017 02:04 PM, Jan Beulich wrote:
>>>>> Sergej Proskurin <prosku...@sec.in.tum.de> 06/27/17 1:52 PM >>>
>>> The following commits introduce a software guest page table walk
>>> software implementation that supports varying guest page size
>>> granularities. This commit moves already existing PAGE_SHIFT_(4K|64K)
>>> and the new PAGE_SHIFT_16K defines to a common place in xen/lib.h as
>>> to allow the following commits to use the consolidated defines.
>> I don't think the PAGE_SHIFT_* should live far away from the other PAGE_*_*
>> macros derived from them. I'm also not convinced lib.h is a good place.
> 
> I agree. I can move related PAGE_*_* from xen/iommu.h together with
> PAGE_SIZE_* macros into a common place. As we already define PAGE_*
> macros in asm/config.h, I believe it would make sense to extend these by
> the upper PAGE_*_* macros. What do you think?
> 
> If you believe asm/config.h is a good place for the upper macros,

I don't, no: config.h should represent settings only, while here you
define constants which aren't necessarily properties of the system
the hypervisor is being built for.

Jan


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