[PATCH 1/3] riscv: Add support for kernel-mode FPU

Samuel Holland samuel.holland at sifive.com
Fri Dec 8 04:17:01 UTC 2023


Hi Christoph,

On 2023-11-22 2:33 AM, Christoph Hellwig wrote:
> On Tue, Nov 21, 2023 at 07:05:13PM -0800, Samuel Holland wrote:
>> +static inline void kernel_fpu_begin(void)
>> +{
>> +	preempt_disable();
>> +	fstate_save(current, task_pt_regs(current));
>> +	csr_set(CSR_SSTATUS, SR_FS);
>> +}
>> +
>> +static inline void kernel_fpu_end(void)
>> +{
>> +	csr_clear(CSR_SSTATUS, SR_FS);
>> +	fstate_restore(current, task_pt_regs(current));
>> +	preempt_enable();
>> +}
> 
> Is there any critical reason to inline these two?  I'd much rather see
> them out of line and exported instead of the low-level helpers.

No, I will define them out of line in v2.

Regards,
Samuel



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