netdev - Re: [PATCH v5 06/14] x86/ioremap: Support hypervisor specified range to map as encrypted

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Message-ID: <cb80e102-4b78-1a03-9c32-6450311c0f55@intel.com>
Date:   Fri, 10 Feb 2023 11:58:32 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Borislav Petkov <bp@...en8.de>,
        "Michael Kelley (LINUX)" <mikelley@...rosoft.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        "hpa@...or.com" <hpa@...or.com>, KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        Dexuan Cui <decui@...rosoft.com>,
        "luto@...nel.org" <luto@...nel.org>,
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Subject: Re: [PATCH v5 06/14] x86/ioremap: Support hypervisor specified range
 to map as encrypted

On 2/10/23 11:36, Borislav Petkov wrote:
>> One approach is to go with the individual device attributes for now.>> If the list does grow significantly, there will probably be patterns
>> or groupings that we can't discern now.  We could restructure into
>> larger buckets at that point based on those patterns/groupings.
> There's a reason the word "platform" is in cc_platform_has(). Initially
> we wanted to distinguish attributes of the different platforms. So even
> if y'all don't like CC_ATTR_PARAVISOR, that is what distinguishes this
> platform and it *is* one platform.
> 
> So call it CC_ATTR_SEV_VTOM as it uses that technology or whatever. But
> call it like the platform, not to mean "I need this functionality".

I can live with that.  There's already a CC_ATTR_GUEST_SEV_SNP, so it
would at least not be too much of a break from what we already have.