Re: [PATCH v3] crypto: x86/sm2 -add Zhaoxin SM2 algorithm implementation

[LeoLiu-oc]

在 2023/11/22 22:26, Dave Hansen 写道:
> > +/* Zhaoxin sm2 verify function */
> > +static inline size_t zhaoxin_gmi_sm2_verify(unsigned char *key, unsigned char *hash,
> > +				unsigned char *sig, unsigned char *scratch)
> > +{
> > +	size_t result;
> > +
> > +	asm volatile(
> > +		".byte 0xf2, 0x0f, 0xa6, 0xc0"
> > +		:"=c"(result)
> > +		:"a"(hash), "b"(key), "d"(SM2_CWORD_VERIFY), "S"(scratch), "D"(sig)
> > +		:"memory");
> > +
> > +	return result;
> > +}
>
> What version of binutils supports this new instruction?

The instruction has not yet been submitted to binutils. It will only be 
used in the Zhaoxin-rng driver, and we are evaluating the necessity of 
submitting it to binutils.

Yours sincerely,
Leoliu-oc