linux-kernel - Re: [PATCH v6 00/11] Intel SGX Driver

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Message-ID: <20171214110913.k7g5qmyaiy2x66wj@linux.intel.com>
Date:   Thu, 14 Dec 2017 13:18:54 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Pavel Machek <pavel@....cz>
Cc:     platform-driver-x86@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, Borislav Petkov <bp@...e.de>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Grzegorz Andrejczuk <grzegorz.andrejczuk@...el.com>,
        Haim Cohen <haim.cohen@...el.com>,
        Ingo Molnar <mingo@...nel.org>,
        Janakarajan Natarajan <Janakarajan.Natarajan@....com>,
        Jim Mattson <jmattson@...gle.com>,
        Kan Liang <Kan.liang@...el.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Kyle Huey <me@...ehuey.com>, Len Brown <len.brown@...el.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        "open list:FILESYSTEMS (VFS and infrastructure)" 
        <linux-fsdevel@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Piotr Luc <piotr.luc@...el.com>,
        Radim Kr??m???? <rkrcmar@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        Vikas Shivappa <vikas.shivappa@...ux.intel.com>
Subject: Re: [PATCH v6 00/11] Intel SGX Driver

On Tue, Dec 12, 2017 at 03:07:50PM +0100, Pavel Machek wrote:
> On Sat 2017-11-25 21:29:17, Jarkko Sakkinen wrote:
> > Intel(R) SGX is a set of CPU instructions that can be used by applications to
> > set aside private regions of code and data. The code outside the enclave is
> > disallowed to access the memory inside the enclave by the CPU access control.
> > In a way you can think that SGX provides inverted sandbox. It protects the
> > application from a malicious host.
> 
> Would you list guarantees provided by SGX?
> 
> For example, host can still observe timing of cachelines being
> accessed by "protected" app, right? Can it also introduce bit flips?
> 
> 								Pavel

I'll put this in my backlog. Thank you.

/Jarkko