linux-kernel - Re: [PATCH 1/2] x86/sgx: Add accounting for tracking overcommit

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Message-ID: <6e8239c6-1b0d-ad42-0bf6-971f37af17b2@intel.com>
Date:   Wed, 22 Dec 2021 06:21:45 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Kristen Carlson Accardi <kristen@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>
Cc:     linux-sgx@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] x86/sgx: Add accounting for tracking overcommit

On 12/20/21 1:35 PM, Kristen Carlson Accardi wrote:
> Thanks for your more detailed explanation - I will take a look at the
> VM overcommit limits. Since obviously the original implementation did
> have a default value set, I had still a remaining specific question
> about your comments. Are you suggesting that there should not be a way
> to override any overcommit limit at all? So drop the parameter all
> together?

Yes, let's kill the exposed tunable.

We don't have any strong, practical need for it at the moment other than
paranoia.