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Message-ID: <8c2cca04-140a-4b0c-b478-5bdc437b5413@zhaoxin.com>
Date:   Wed, 29 Nov 2023 15:24:23 +0800
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Subject: Re: [PATCH v3] crypto: x86/sm2 -add Zhaoxin SM2 algorithm
 implementation
To:     Dave Hansen <dave.hansen@intel.com>, <herbert@gondor.apana.org.au>,
        <davem@davemloft.net>, <tglx@linutronix.de>, <mingo@redhat.com>,
        <bp@alien8.de>, <dave.hansen@linux.intel.com>, <x86@kernel.org>,
        <hpa@zytor.com>, <seanjc@google.com>, <kim.phillips@amd.com>,
        <pbonzini@redhat.com>, <babu.moger@amd.com>,
        <jiaxi.chen@linux.intel.com>, <jmattson@google.com>,
        <pawan.kumar.gupta@linux.intel.com>,
        <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>
CC:     <CobeChen@zhaoxin.com>, <TonyWWang@zhaoxin.com>,
        <YunShen@zhaoxin.com>, <Leoliu@zhaoxin.com>
References: <20231109094744.545887-1-LeoLiu-oc@zhaoxin.com>
 <20231122064355.638946-1-LeoLiu-oc@zhaoxin.com>
 <aa7bbecc-dcd5-4757-8f8a-1eb2ab0d529b@intel.com>
From:   LeoLiu-oc <leoliu-oc@zhaoxin.com>
In-Reply-To: <aa7bbecc-dcd5-4757-8f8a-1eb2ab0d529b@intel.com>
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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