Re: Adding VHOST_USER_PROTOCOL_F_CONFIG_MEM_SLOTS to 5.1 release notes

[Michael S. Tsirkin]

A bit verbose. I shortened it to

A new feature, VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS, has been
added to the vhost-user protocol.
VMs with vhost-user device backends which support this feature will
not be subject to the current max RAM slots limit of 8 and will be able to
hot-add memory as many times as the target platform supports.

Peter, can you pls allow Raphael wiki access? I don't remember how it's done ...

On Wed, Jul 29, 2020 at 09:17:27PM -0600, Raphael Norwitz wrote:
> How about something like:
> "A new feature, VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS, has been
> added to the vhost-user protocol which, when negotiated, changes the
> way QEMU transmit memory regions to backend devices. Instead of
> sending all regions in a single VHOST_USER_SET_MEM_TABLE message, QEMU
> will send supporting backends individual VHOST_USER_ADD_MEM_REG and
> VHOST_USER_REM_MEM_REG messages to update the devices memory tables.
> VMs with vhost-user device backends which support this feature will
> not be subject to the max RAM slots limit of 8 and will be able to
> hot-add memory as many times as the target platform supports. Backends
> which do not support VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS are
> unaffected."
> 
> I don't have permission to edit the wiki. How can I get permission? Or
> can someone post it for me?
> 
> On Wed, Jul 29, 2020 at 8:19 AM Michael S. Tsirkin <mst@redhat.com> wrote:
> >
> > On Tue, Jul 28, 2020 at 09:16:10PM -0600, Raphael Norwitz wrote:
> > > Hi mst,
> > >
> > > Looking at the current changelog
> > > https://wiki.qemu.org/ChangeLog/5.1#virtio, I don't see any mention of
> > > the VHOST_USER_PROTOCOL_F_CONFIG_MEM_SLOTS protocol feature. It is a
> > > user visible change so shouldn't we add a note?
> > >
> > > Thanks,
> > > Raphael
> >
> > I didn't look at updating the changelog yet.
> > Would be great if you could write up new vhost user things.
> >
> > --
> > MST
> >