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Date:   Wed, 22 Aug 2018 21:07:20 +0800
From:   Pu Wen <>
To:     Borislav Petkov <>, Paolo Bonzini <>
Subject: Re: [PATCH v4 15/16] driver/edac: enable Hygon support to AMD64 EDAC

On 2018/8/21 21:04, Borislav Petkov wrote:
> On Tue, Aug 21, 2018 at 01:26:13PM +0200, Paolo Bonzini wrote:
>> But then I don't see the point of adding the Hygon vendor, since any
>> check can be simplified:
> I think Hygon wanted to superficially show it is not really an AMD. For
> example, the Hygon thing doesn't do SME/SEV. AFAIK.
> So we can just as well check only family but I'd say the vendor thing is
> laying the grounds for the future where reportedly it will differ more
> from an AMD. And then we can start splitting code more based on vendor
> and not look at family at all.
> But for right now I think we should strive to keep the changes as small
> as possible and only do real splitting when they start adding new
> functionality. Which would mean having a hygon_edac.c too, for example.
> All, IMHO, of course. Sharing code between vendors is always yucky.

Thanks for Boris's clarification.

It's hard to find the balance between short term(sharing codes) and long
term(splitting codes).
Current I think we'd better try to follow the following way:
For current version, we will try to minimize the modification and share
For later big modification, will try to split codes to make code path
more clear.

Pu Wen

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