linux-kernel - Re: [PATCH] x86/alternatives: Fix optimize

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Message-ID: <1515585487.22302.120.camel@infradead.org>
Date:   Wed, 10 Jan 2018 11:58:07 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andi Kleen <andi@...stfloor.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Paul Turner <pjt@...gle.com>,
        Andrew Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...ux-foundation.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Jiri Kosina <jikos@...nel.org>, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] x86/alternatives: Fix optimize_nops() checking

On Wed, 2018-01-10 at 12:57 +0100, Borislav Petkov wrote:
> On Wed, Jan 10, 2018 at 11:49:55AM +0000, David Woodhouse wrote:
> > Don't suppose you want to make the alignment actually *work*? :)
> 
> I can try but only if it is really worth it. If we don't see it in
> measurements, then it is wasted time and energy and added needless
> code complexity.

Agreed. Hence the question to Paul.
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