linux-kernel - Re: [tip:x86/urgent] x86/mm: Add barriers and document switch

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Message-ID: <20160111222235.GM6344@twins.programming.kicks-ass.net>
Date:	Mon, 11 Jan 2016 23:22:35 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Brian Gerst <brgerst@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Andrew Lutomirski <luto@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/urgent] x86/mm: Add barriers and document switch_mm()
 -vs-flush synchronization

On Mon, Jan 11, 2016 at 01:50:24PM -0800, Andy Lutomirski wrote:
> On Mon, Jan 11, 2016 at 10:25 AM, Peter Zijlstra <peterz@...radead.org> wrote:
> > On Mon, Jan 11, 2016 at 03:42:40AM -0800, tip-bot for Andy Lutomirski wrote:

> >> +              * The bad outcome can occur if either CPU's load is
> >> +              * reordered before that CPU's store, so both CPUs much
> >
> > s/much/must/ ?
> 
> Indeed.  Is this worth a follow-up patch?

Dunno, I didn't even spot the typo the first time I read it.. :-)