linux-kernel - Re: [PATCH v3 16/17] driver/edac: enable Hygon support to AMD64 EDAC driver

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Date:   Sat, 11 Aug 2018 16:10:51 -0400
From:   Michael Jin <mikhail.jin@...il.com>
To:     Pu Wen <puwen@...on.cn>
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, thomas.lendacky@....com, bp@...en8.de,
        pbonzini@...hat.com, Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-edac@...r.kernel.org
Subject: Re: [PATCH v3 16/17] driver/edac: enable Hygon support to AMD64 EDAC driver

On Sat, Aug 11, 2018 at 3:56 PM, Michael Jin <mikhail.jin@...il.com> wrote:
> On Sat, Aug 11, 2018 at 9:30 AM, Pu Wen <puwen@...on.cn> wrote:
>> @@ -1051,6 +1065,16 @@ static void determine_memory_type(struct amd64_pvt *pvt)
>>                 else
>>                         pvt->dram_type = MEM_DDR4;
>>                 return;
>> +       case 0x18:
>> +               if (pvt->vendor == X86_VENDOR_HYGON) {
>
> This vendor checking is not necessary as there are no other known
> family 18h processors.

Actually, vendor checking works here. Although, AMD has not released a
family 18h yet.