linux-kernel - Re: [PATCH 04/35] x86/cpufeatures: Introduce CPU setup and option parsing for CET

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Date:   Tue, 8 Feb 2022 20:29:25 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To:     "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "bsingharora@...il.com" <bsingharora@...il.com>,
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        "rdunlap@...radead.org" <rdunlap@...radead.org>,
        "keescook@...omium.org" <keescook@...omium.org>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Eranian, Stephane" <eranian@...gle.com>,
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        "Hansen, Dave" <dave.hansen@...el.com>,
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CC:     "Yu, Yu-cheng" <yu-cheng.yu@...el.com>
Subject: Re: [PATCH 04/35] x86/cpufeatures: Introduce CPU setup and option
 parsing for CET

On Mon, 2022-02-07 at 14:49 -0800, Dave Hansen wrote:
> Given this:
> 
>         
> https://lore.kernel.org/all/20220127115626.14179-2-bp@alien8.de/
> 
> I'd probably yank the command-line option out of this series, or
> stick
> it in a separate patch that you tack on to the end.

Makes sense. I'll change the docs to point out exactly how to use this
new parameter for shadow stack. It could come in handy if some
important service miss marks itself as shadow stack capable and
complicates boot.

Thanks.