linux-kernel - Re: [PATCH 4/5] selftests/sgx: Ensure expected enclave data buffer size and placement.

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Message-Id: <CUE1R4HRQ599.1BX4CEIPSDWRW@seitikki>
Date:   Fri, 28 Jul 2023 19:19:45 +0000
From:   "Jarkko Sakkinen" <jarkko@...nel.org>
To:     "Jo Van Bulck" <jo.vanbulck@...kuleuven.be>,
        <linux-sgx@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Cc:     <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH 4/5] selftests/sgx: Ensure expected enclave data buffer
 size and placement.

On Mon Jul 24, 2023 at 4:58 PM UTC, Jo Van Bulck wrote:
> Do not declare the enclave data buffer static to ensure it is not optimized
                                         ~~~~~~
					 as static

/enclave data buffer/encl_buffer/

> away by the compiler, even when not used entirely by the test enclave code.

"Declare encl_buffer as global, in order to ensure that it is not
optimized away by the compiler."

So, when exactly is it optimized away by the compiler? This is missing.

BR, Jarkko