linux-kernel - Re: [PATCH RESEND 0/3] x86/sgx: eextend ioctl

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Message-ID: <c7b19652-3b5a-e864-1e0e-3e3d26944398@intel.com>
Date:   Wed, 31 Mar 2021 08:53:43 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Raoul Strackx <raoul.strackx@...tanix.com>,
        Jarkko Sakkinen <jarkko@...nel.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>,
        linux-sgx@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND 0/3] x86/sgx: eextend ioctl

On 3/31/21 5:50 AM, Raoul Strackx wrote:
> The sgx driver can only load enclaves whose pages are fully measured.
> This may exclude existing enclaves from running. This patch adds a
> new ioctl to measure 256 byte chunks at a time.

The changelogs here are pretty sparse.  Could you explain in a bit more
detail what's going on?

A review of the relevant pieces of the SGX architecture would be
appreciated.