Re: [PATCH V4 16/17] riscv: compat: Add COMPAT Kbuild skeletal support

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On Mon, Jan 31, 2022 at 8:26 PM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
> Given that most rv64 implementations can't run in rv32 mode, what is the
> failure mode if someone tries it with the compat mode enabled?
A static linked simple hello_world could still run on a non-compat
support hardware. But most rv32 apps would meet different userspace
segment faults.

Current code would let the machine try the rv32 apps without detecting
whether hw support or not.


-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/



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