linux-kernel - RE: [PATCH] ARM: Implement Clang's SLS mitigation

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Message-ID: <3f61af0eee9b495e8e8c032902d033c5@AcuMS.aculab.com>
Date:   Fri, 12 Feb 2021 10:41:03 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Nathan Chancellor' <nathan@...nel.org>,
        Jian Cai <jiancai@...gle.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Arnd Bergmann <arnd@...db.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        "Daniel Palmer" <daniel@...f.com>,
        "ndesaulniers@...gle.com" <ndesaulniers@...gle.com>,
        Russell King <linux@...linux.org.uk>,
        "clang-built-linux@...glegroups.com" 
        <clang-built-linux@...glegroups.com>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "manojgupta@...gle.com" <manojgupta@...gle.com>,
        Andreas Färber <afaerber@...e.de>,
        "llozano@...gle.com" <llozano@...gle.com>,
        James Morris <jmorris@...ei.org>,
        Will Deacon <will@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "Serge E. Hallyn" <serge@...lyn.com>
Subject: RE: [PATCH] ARM: Implement Clang's SLS mitigation

> > on -mharden-sls=all, which mitigates the straight-line speculation
> > vulnerability, or more commonly known as Spectre, Meldown.
> 
>                  ^ I would drop "or" here
>                                                   ^ drop comma,
>                                                     use "and",
>                                                     typo: "Meltdown"
> 
> Although, is that a fair statement? SLS is not called Spectre or
> Meltdown by ARM, it is a speculative processor vulnerabilty. It
> might just be better to drop eerything after the first comma (although
> maybe that is just being pedantic).

or replace with:
   (speculative execution of the instruction following some unconditional jumps).

Which will save a lot of people looking up what it means.

	David

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