Re: [PATCH for-7.1 3/4] target/loongarch: rename the TCG CPU "la464" to "qemu64-v1.00"

[Richard Henderson]

On 8/14/22 09:55, WANG Xuerui wrote:
> From: WANG Xuerui <git@xen0n.name>
>
> The only LoongArch CPU implemented is modeled after the Loongson 3A5000,
> but it is not the real thing, ...

The 3A5000 is the SoC, as far as I could find, and the documentation of that says the core 
is named the la464.


> In general, high-fidelity models can and should be named after the real
> hardware model, while generic emulation-oriented models should be named
> after ISA levels.

This wasn't intended to be a generic emulation model, as far as I know.  There are missing 
features, but presumably those would eventually be filled in.


> For now, the best reference for LoongArch ISA levels
> is the revision number of the LoongArch ISA Manual, of which v1.00 is
> still the latest. (v1.01 and v1.02 are minor revisions without
> substantive change.)
>
> As defined by various specs, the vendor and model names are also
> reflected in respective CSRs, and are 8 bytes long. So, rename "la464"
> to "qemu64-v1.00", with "QEMU64" as vendor name and "v1.00" as model
> name.

Eh, I suppose.  I'm not really keen on this though, as I would presume there will be 
eventual forward progress on completing the real cpu model.  We simply won't give any 
compatibility guarantees for loongarch until we are ready to do so.


r~