linux-kernel - Re: [PATCH v7 2/4] x86/stackvalidate: Compile-time stack validation

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Message-ID: <20150721120611.GB11122@treble.redhat.com>
Date:	Tue, 21 Jul 2015 07:06:11 -0500
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Bernd Petrovitsch <bernd@...rovitsch.priv.at>
Cc:	Namhyung Kim <namhyung@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Michal Marek <mmarek@...e.cz>,
	Peter Zijlstra <peterz@...radead.org>,
	Andy Lutomirski <luto@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Pedro Alves <palves@...hat.com>, x86@...nel.org,
	live-patching@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 2/4] x86/stackvalidate: Compile-time stack validation

On Tue, Jul 21, 2015 at 10:42:32AM +0200, Bernd Petrovitsch wrote:
> On Mon, 2015-07-20 at 12:50 -0500, Josh Poimboeuf wrote:
> [...]
> > It's perhaps distasteful, but it improves performance.  And I'm a
> > pragmatist at heart ;-)
> 
> And you measured the time gain guaranteeing that it actually saves that
> much time. Usually that isn't actually measurable ....

You're probably right.  s/pragmatist/lazy/ ;-)  I'll fix the leaks.

-- 
Josh
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