Similar to Intel, AMD, and POWER, Loongson 3A6000 processors will have Simultaneous Multi-Threading. This is 2-way SMT to double the number of threads / logical cores of the processors.
The new Linux patch posted by a Loongson engineer now exposes the proper topology on these LoongArch CPUs for being able to detect the two logical cores per physical core.
In the patch message it notes a 3A6000 model having four cores / eight threads, but it's not clear if that is their flagship processor model or a lower-end SKU.
It will be interesting to see how effective Loongson's SMT implementation is and ultimately how competitive or not are these 3A6000 processors considering the initial LoongArch-based 3A5000 processors are rather slow and fail to compete with recent generations of Intel and AMD processors.