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Re: [Xen-devel] [RFC 2/2] xen/public: grant-table: Specificy the size of the grant

On 12/08/15 11:35, Jan Beulich wrote:
>>>> On 12.08.15 at 12:00, <julien.grall@xxxxxxxxxx> wrote:
>> On 12/08/2015 08:21, Jan Beulich wrote:
>>> This paragraph should get "on ARM" added somewhere. There is no
>>> inherent requirement for such a restriction on another architecture
>>> Xen might get ported to; the only restriction of the current interface
>>> is that it can't support page sizes from 64k up. On an architecture
>>> e.g. not supporting other than 8k pages things would still be fine,
>>> yet the comment above would then be wrong.
>>> An alternative might be to say "... is always the smallest
>>> architecturally supported page size (e.g. 4k on x86 and ARM)
>>> irrespective of ...".
>> While this is true today, I don't see anything that would prevent a new 
>> architecture to respect this.
> I don't think I get what you're trying to say here.

I meant that it may be possible to have an architecture where Xen would
support 64KB page size and the smallest page granularity would be 4KB.


Julien Grall

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