Re: [PATCH v2] crypto: x86/sm2 -add Zhaoxin SM2 algorithm implementation

From: Dave Hansen
Date: Wed Nov 15 2023 - 14:21:54 EST



> vim +/asm +43 arch/x86/crypto/sm2-zhaoxin-gmi_glue.c
>
> 35
> 36 /* Zhaoxin sm2 verify function */
> 37 static inline int zhaoxin_gmi_sm2_verify(unsigned char *key, unsigned char *hash, unsigned char *sig,
> 38 unsigned char *scratch)
> 39 {
> 40 uint64_t cword, f_ok;
> 41 cword = (uint64_t)0x8;
> 42
> > 43 asm(".byte 0xf2, 0x0f, 0xa6, 0xc0"
> 44 :"=c"(f_ok), "+a"(hash), "+b"(key), "+d"(cword), "+S"(scratch), "+D"(sig));
> 45
> 46 return f_ok;
> 47 }
> 48

When you go fix your compile error, can you please look around the tree
and see what folks do for replacing .byte? AS_SHA1_NI, for example.