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

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Date:   Wed, 29 Nov 2023 15:24:23 +0800
From:   LeoLiu-oc <leoliu-oc@...oxin.com>
To:     Dave Hansen <dave.hansen@...el.com>, <herbert@...dor.apana.org.au>,
        <davem@...emloft.net>, <tglx@...utronix.de>, <mingo@...hat.com>,
        <bp@...en8.de>, <dave.hansen@...ux.intel.com>, <x86@...nel.org>,
        <hpa@...or.com>, <seanjc@...gle.com>, <kim.phillips@....com>,
        <pbonzini@...hat.com>, <babu.moger@....com>,
        <jiaxi.chen@...ux.intel.com>, <jmattson@...gle.com>,
        <pawan.kumar.gupta@...ux.intel.com>,
        <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <CobeChen@...oxin.com>, <TonyWWang@...oxin.com>,
        <YunShen@...oxin.com>, <Leoliu@...oxin.com>
Subject: Re: [PATCH v3] crypto: x86/sm2 -add Zhaoxin SM2 algorithm
 implementation



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