Hi Jonathan,
On Tue, Oct 08, 2024 at 11:30:38AM +0100, Jonathan Cameron wrote:
> Date: Tue, 8 Oct 2024 11:30:38 +0100
> From: Jonathan Cameron <[email protected]>
> Subject: Re: [RFC v2 00/12] Introduce Hybrid CPU Topology via Custom
> Topology Tree
> X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32)
>
> On Thu, 19 Sep 2024 14:11:16 +0800
> Zhao Liu <[email protected]> wrote:
>
>
> > -smp maxsockets=1,maxdies=1,maxmodules=2,maxcores=2,maxthreads=2
> > -machine pc,custom-topo=on \
> > -device cpu-socket,id=sock0 \
> > -device cpu-die,id=die0,bus=sock0 \
> > -device cpu-module,id=mod0,bus=die0 \
> > -device cpu-module,id=mod1,bus=die0 \
> > -device x86-intel-core,id=core0,bus=mod0 \
> > -device x86-intel-atom,id=core1,bus=mod1 \
> > -device x86-intel-atom,id=core2,bus=mod1 \
> > -device
> > host-x86_64-cpu,id=cpu0,socket-id=0,die-id=0,module-id=0,core-id=0,thread-id=0
> > \
> > -device
> > host-x86_64-cpu,id=cpu1,socket-id=0,die-id=0,module-id=0,core-id=0,thread-id=1
> > \
> > -device
> > host-x86_64-cpu,id=cpu2,socket-id=0,die-id=0,module-id=1,core-id=0,thread-id=0
> > \
> > -device
> > host-x86_64-cpu,id=cpu3,socket-id=0,die-id=0,module-id=1,core-id=1,thread-id=0
>
> I quite like this as a way of doing the configuration but that needs
> some review from others.
>
> Peter, Alex, do you think this scheme is flexible enough to ultimately
> allow us to support this for arm?
BTW, this series requires a preliminary RFC [*] to first convert all the
topology layers into devices.
If you’re interested as well, welcome your comments. :)
[*]: [RFC v2 00/15] qom-topo: Abstract CPU Topology Level to Topology Device
https://lore.kernel.org/qemu-devel/[email protected]/
Regards,
Zhao
