Is there a way for xdma driver to serve risc-v PC

[huchensong]

this is my result ,after installing the driver module.
It seems to works fine in riscv, but the bandwidth is very slow.
I write a fpga program to test the bandwidth ,this is my result on x86 and riscv.

x86 on the left, while riscv on the right.
x86 cpu is i9-12900K, riscv cpu is SOPHON SG2042.
The performance gap between them is too large,what is the reason?
any reason about cpu performance?