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Subject: Re: [virtio] [OASIS Issue Tracker] Created: (VIRTIO-28) Implement new balloon device (ID 13)

Daniel Kiper <daniel.kiper@oracle.com> writes:
> On Tue, Oct 29, 2013 at 11:31:58AM +1030, Rusty Russell wrote:
>> Rusty Russell <rusty@au1.ibm.com> writes:
>> > But it makes sense to put the page size in each request.  A bit more
>> > painful to implement, since the driver can't know in advance that it
>> > doesn't support a request.
>> Actually, I changed my mind.
>> It isn't useful to ask for different size pages.  QEMU currently does
>> all-or-nothing.  Even if it did a mix of both, it would need to tell the
>> guest which areas were which (I really want one of *these* huge pages).
>> That's too much complexity for a feature which doesn't exist.  So I
>> prefer the current single-page-size model.
> If we assume that we could add this feature in the future
> then it is OK for me.

Yes, I don't quite know what the feature would look like, so we should
add it when we do.  It may involve specifying pfn ranges, as well as
sizes which the balloon wants..


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