linux-kernel - Re: [RFC PATCH 03/20] x86/sgx: Track owning enclave in VA EPC pages

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Message-ID: <Yy2r+MN28I54R9an@kernel.org>
Date:   Fri, 23 Sep 2022 15:52:08 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Kristen Carlson Accardi <kristen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, linux-sgx@...r.kernel.org,
        cgroups@...r.kernel.org, Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Sean Christopherson <seanjc@...gle.com>
Subject: Re: [RFC PATCH 03/20] x86/sgx: Track owning enclave in VA EPC pages

On Thu, Sep 22, 2022 at 10:10:40AM -0700, Kristen Carlson Accardi wrote:
> From: Sean Christopherson <sean.j.christopherson@...el.com>
> 
> In order to fully account for an enclave's EPC page usage, store
> the owning enclave of a VA EPC page.
> 
> Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
> Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
> Cc: Sean Christopherson <seanjc@...gle.com>

Why this change fully accounts enclave's EPC page usage?

BR, Jarkko