Re: [Xen-devel] [RFC Design Doc v2] Add vNVDIMM support for Xen

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 04.08.16 at 10:52, <haozhong.zhang@xxxxxxxxx> wrote:
> On 08/03/16 17:25, Konrad Rzeszutek Wilk wrote:
>> Anyhow, wouldn't this 'sizeof(struct page_info)' depend on the ndctl
>> tool and what version was used to create this? What if one version
>> used 32-bytes for a PAGE, while another used 64-bytes for a PAGE too?
>> It would be a bit of catching up .. wait, this same problem MUST
>> be with Linux? How does it deal with this?
> 
> Good question. Linux chooses a size (64 bytes) larger than its current
> sizeof(struct page) (40 bytes). We may also do in the same way,
> e.g. 32 bytes vs. 64 bytes?

I don't understand this: These structures aren't meant to be
persistent, so their size shouldn't matter?

Jan


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