[PATCH bpf v2] riscv, bpf: Emit fixed-length instructions for BPF_PSEUDO_FUNC

Pu Lehui pulehui at huawei.com
Tue Dec 6 00:49:41 PST 2022



On 2022/12/6 16:42, Björn Töpel wrote:
> Pu Lehui <pulehui at huaweicloud.com> writes:
> 
>>> Wouldn't that work?
>>>
>>
>> It definitely works. But auipc+addi may be some holes, while
>> lui+addi+slli support all the address of kernel and module. And this
>> might be help for the future feature porting.
> 
> We're already using auipc/jalr for calls, and I'd say it *very* unlikely
> that we'll hit the non-covered range. I'd say go with auipc/addi +
> error, and we can change if this really is a problem.

Well, thank you for your patience, will send new soon.



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