Re: [PATCH v4 1/1] hw/arm/sbsa-ref: Enable CPU cluster on ARM sbsa machine

[Richard Henderson]

On 4/26/24 00:35, Xiong Yining wrote:
> From: xiongyining1480 <xiongyining1480@phytium.com.cn>
>
> Enable CPU cluster support on SbsaQemu platform, so that users can
> specify a 4-level CPU hierarchy sockets/clusters/cores/threads. And
> this topology can be passed to the firmware through DT cpu-map.
>
> Signed-off-by: Xiong Yining <xiongyining1480@phytium.com.cn>
> tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
> ---
>   docs/system/arm/sbsa.rst |  4 ++++
>   hw/arm/sbsa-ref.c        | 37 ++++++++++++++++++++++++++++++++++++-
>   2 files changed, 40 insertions(+), 1 deletion(-)

Isn't this basically what MPIDR_EL1 is supposed to indicate?
We do not yet implement all of that in QEMU, but should.

Why does the same info need to be replicated in devicetree?


r~