Re: [Xen-devel] [Memory Accounting] was: Re: PVH dom0 creation fails - the system freezes

[George Dunlap <dunlapg@xxxxxxxxx>]

On Thu, Jul 26, 2018 at 1:19 PM, Juergen Gross <jgross@xxxxxxxx> wrote:
> On 26/07/18 13:27, George Dunlap wrote:
>> On Thu, Jul 26, 2018 at 12:22 PM, Juergen Gross <jgross@xxxxxxxx> wrote:
>>> I believe the right way would be to design a proper ballooning interface
>>> suitable for all kinds of guests from scratch. This should include how
>>> to deal with hotplug of memory or booting with mem < mem_max. Whether
>>> PoD should be included should be discussed, too.
>>
>> Juergen, what do you think of this interface:  The toolstack looks at
>> all the available information about the guest and determines what size
>> the guest's balloon needs to be.  It then writes
>> memory/target_balloon_size.  The guest balloon driver simply attempts
>> to allocate / free memory to make the balloon that size.
>
> This should be per numa node. So memory/node<n>/target-balloon-size
> (I don't like the underscores in the node name).

This should be vnode then, to emphasize that it's a node from the
*guest's* perspective, not the host's perspective.

 -George

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