linux-kernel - Re: [PATCH v14 01/26] Documentation/x86: Add CET description

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Message-ID: <dca16efa-4869-d21d-1056-3aa57f396380@intel.com>
Date:   Fri, 6 Nov 2020 10:32:18 -0800
From:   "Yu, Yu-cheng" <yu-cheng.yu@...el.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-mm@...ck.org,
        linux-arch@...r.kernel.org, linux-api@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Andy Lutomirski <luto@...nel.org>,
        Balbir Singh <bsingharora@...il.com>,
        Cyrill Gorcunov <gorcunov@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Eugene Syromiatnikov <esyr@...hat.com>,
        Florian Weimer <fweimer@...hat.com>,
        "H.J. Lu" <hjl.tools@...il.com>, Jann Horn <jannh@...gle.com>,
        Jonathan Corbet <corbet@....net>,
        Kees Cook <keescook@...omium.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Oleg Nesterov <oleg@...hat.com>, Pavel Machek <pavel@....cz>,
        Peter Zijlstra <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Ravi V. Shankar" <ravi.v.shankar@...el.com>,
        Vedvyas Shanbhogue <vedvyas.shanbhogue@...el.com>,
        Dave Martin <Dave.Martin@....com>,
        Weijiang Yang <weijiang.yang@...el.com>,
        Pengfei Xu <pengfei.xu@...el.com>
Subject: Re: [PATCH v14 01/26] Documentation/x86: Add CET description

On 11/6/2020 10:28 AM, Borislav Petkov wrote:
> On Fri, Nov 06, 2020 at 10:16:47AM -0800, Yu, Yu-cheng wrote:
>> In the current shell, if GLIBC_TUNABLES variable is set as such,
>> applications started will have CET features disabled.  I can put more
>> details here, or maybe a reference to the GLIBC man pages.
> 
> Why do you keep repeating "the current shell"? You pass it with
> setenv(3) too, can't you?
> 

Ture.  I will revise it.

Yu-cheng