Re: [PATCH bpf-next] bpf, sparc: Add support for BPF_SDIV and BPF_SMOD in the sparc64 JIT

[Nicholas Dudar]

On Wed, Jul 29, 2026 at 08:33:15AM +0800, Kuan-Wei Chiu wrote:
> I saw that your bpf jit patches span multiple architectures.
> Assuming you don't have access to all these different hardware platforms.
> Just out of curiosity how were these patches tested?

Correct, I used QEMU for my local testing. For sparc64 I cross-compiled
bpf-next 520d7d794202 with sparc64-linux-gnu-gcc 11.4.0, then compared
complete lib/test_bpf runs from stock and patched kernels under
qemu-system-sparc64 -M sun4u. Ten tests changed from FAIL to PASS.

I also compared stock and patched runs for x86_32, parisc32/64 and
MIPS32/64, including MIPS R6.

For LoongArch I reproduced the issue under QEMU and Tiezhu Yang later
ran test_bpf with the patch and supplied Tested-by.

Thanks,
Nicholas