[SeaBIOS] [Qemu-devel] [RFC PATCH v4 00/30] ACPI memory hotplug

li guang lig.fnst at cn.fujitsu.com
Wed Mar 20 07:18:00 CET 2013

在 2013-01-09三的 01:08 +0100,Andreas Färber写道:
> Am 18.12.2012 13:41, schrieb Vasilis Liaskovitis:
> > Because dimm layout needs to be configured on machine-boot, all dimm devices
> > need to be specified on startup command line (either with populated=on or with
> > populated=off). The dimm information is stored in dimm configuration structures.
> > 
> > After machine startup, dimms are hot-added or removed with normal device_add
> > and device_del operations e.g.:
> > Hot-add syntax: "device_add dimm,id=mydimm0,bus=membus.0"
> > Hot-remove syntax: "device_del dimm,id=mydimm0"
> This sounds contradictory: Either all devices need to be specified on
> the command line, or they can be hot-added via monitor.
> Assuming a fixed layout at startup, I wonder if there is another clever
> way to model this... For CPU hotplug Anthony had suggested to have a
> fixed set of link<Socket> properties that get set to a CPU socket as
> needed. Might a similar strategy work for memory, i.e. a
> startup-configured amount of link<DIMM>s on /machine/dimm[n] that point
> to a QOM DIMM object or NULL if unpopulated? Hot(un)plug would then
> simply work via QMP qom-set command. (CC'ing some people)

Sorry, what's link<>, did it adopted by cpu-QOM?
can you give some hints?


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