linux-kernel - Re: [Patch v4 1/2] cgroup: svm: Add Encryption ID controller

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Message-ID: <YBF0bb7gGkF01VCR@slm.duckdns.org>
Date:   Wed, 27 Jan 2021 09:10:53 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Vipin Sharma <vipinsh@...gle.com>
Cc:     David Rientjes <rientjes@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        "Singh, Brijesh" <brijesh.singh@....com>,
        "Grimm, Jon" <jon.grimm@....com>,
        "Van Tassell, Eric" <eric.vantassell@....com>, pbonzini@...hat.com,
        lizefan@...wei.com, hannes@...xchg.org, frankja@...ux.ibm.com,
        borntraeger@...ibm.com, corbet@....net, joro@...tes.org,
        vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        gingell@...gle.com, dionnaglaze@...gle.com, kvm@...r.kernel.org,
        x86@...nel.org, cgroups@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [Patch v4 1/2] cgroup: svm: Add Encryption ID controller

Hello,

On Tue, Jan 26, 2021 at 05:11:59PM -0800, Vipin Sharma wrote:
> Sounds good, we can have a single top level stat file
> 
> misc.stat
>   Shows how many are supported on the host:
>   $ cat misc.stat
>   sev 500
>   sev_es 10
> 
> If total value of some resource is 0 then it will be considered inactive and
> won't show in misc.{stat, current, max}
> 
> We discussed earlier, instead of having "stat" file we should show
> "current" and "capacity" files in the root but I think we can just have stat
> at top showing total resources to keep it consistent with other cgroup
> files.

Let's do misc.capacity and show only the entries which have their resources
initialized.

Thanks.

-- 
tejun