linux-kernel - Re: [patch V2 06/28] x86/speculation: Rename SSBD update functions

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Message-ID: <20181126152429.GE4843@zn.tnic>
Date:   Mon, 26 Nov 2018 16:24:29 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Jiri Kosina <jkosina@...e.cz>,
        Tom Lendacky <thomas.lendacky@....com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Casey Schaufler <casey.schaufler@...el.com>,
        Asit Mallick <asit.k.mallick@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Jon Masters <jcm@...hat.com>,
        Waiman Long <longman9394@...il.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Dave Stewart <david.c.stewart@...el.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [patch V2 06/28] x86/speculation: Rename SSBD update functions

On Sun, Nov 25, 2018 at 07:33:34PM +0100, Thomas Gleixner wrote:
> During context switch, the SSBD bit in SPEC_CTRL MSR is updated according
> to changes of the TIF_SSBD flag in the current and next running task.
> 
> Currently, only the bit controlling speculative store bypass disable in
> SPEC_CTRL MSR is updated and the related update functions all have
> "speculative_store" or "ssb" in their names.
> 
> For enhanced mitigation control other bits in SPEC_CTRL MSR need to be
> updated as well, which makes the SSB names inadequate.
> 
> Rename the "speculative_store*" functions to a more generic name.
> 

And add:

"No functional changes."

-- 
Regards/Gruss,
    Boris.

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