On 2023-12-11 10:11 AM, Christoph Hellwig wrote:
>> +#ifdef __riscv_f
>> +
>> +#define kernel_fpu_begin() \
>> +static_assert(false, "floating-point code must use a separate
>> translation unit")
>> +#define kernel_fpu_end() kernel_fpu_begin()
>> +
>> +#else
>> +
>> +void kernel_fpu_begin(void
> +#ifdef __riscv_f
> +
> +#define kernel_fpu_begin() \
> + static_assert(false, "floating-point code must use a separate
> translation unit")
> +#define kernel_fpu_end() kernel_fpu_begin()
> +
> +#else
> +
> +void kernel_fpu_begin(void);
> +void kernel_fpu_end(void);
> +
> +#endif
I'll assum
This is motivated by the amdgpu DRM driver, which needs floating-point
code to support recent hardware. That code is not performance-critical,
so only provide a minimal non-preemptible implementation for now.
Use a similar trick as ARM to force placing floating-point code in a
separate translation
