linux-kernel - Re: Re: [PATCH v12 00/18] Enable FSGSBASE instructions

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Date:   Fri, 22 May 2020 21:19:28 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Don Porter <porter@...unc.edu>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        bp@...en8.de, luto@...nel.org, hpa@...or.com,
        dave.hansen@...el.com, tony.luck@...el.com,
        ravi.v.shankar@...el.com, chang.seok.bae@...el.com
Subject: Re: Re: [PATCH v12 00/18] Enable FSGSBASE instructions

> Setting the fs register in userspace is an essential feature for running
> legacy code in SGX.  We have been following LKML discussions on this
> instruction for years, and hoping this feature would be supported by Linux,

If you need a feature you should comment on it. One of the reasons
it took so long is that the users didn't speak up.


-Andi