Re: [RFC PATCH v2 0/5] virtio-balloon: Working Set Reporting

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Apr 09, 2025 at 09:52:12AM -0700, Yuanchu Xie wrote:
> On Mon, Apr 7, 2025 at 2:39 AM Michael S. Tsirkin <mst@redhat.com> wrote:
> >
> > On Thu, May 25, 2023 at 10:20:11PM +0000, T.J. Alumbaugh wrote:
> > > This is the device implementation for the proposed expanded balloon feature
> > > described here:
> > >
> > > https://lore.kernel.org/linux-mm/20230509185419.1088297-1-yuanchu@google.com/
> > >
> > > This series has a fixed number of "bins" for the working set report, but this is
> > > not a constraint of the system. The bin number is fixed at device realization
> > > time (in other implementations it is specified as a command line argument). Once
> > > that number is fixed, this determines the correct number of bin intervals to
> > > pass to the QMP/HMP function 'working_set_config'. Any feedback on how to
> > > properly construct that function for this use case (passing a variable length
> > > list?) would be appreciated.
> >
> > It's been a while. Is there interest is reviving this? I also note that
> > reserving a feature bit is very much recommended to avoid a complete
> > mess.
> Thanks for the reminder Michael! I've been informed [1] that this
> should be brought up in VIRTIO TC, but I haven't gotten around to this
> yet. Should I send a patch to this mailing list or a proposal to
> virtio-comment@lists.oasis-open.org to reserve a feature bit?
> 
> [1] https://lore.kernel.org/linux-mm/20241127025728.3689245-10-yuanchu@google.com/


You can do this in any order.

-- 
MST