linux-kernel - Re: [PATCH v8 01/10] qspinlock: A generic 4-byte queue spinlock implementation

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Message-ID: <20140407141258.GL10526@twins.programming.kicks-ass.net>
Date:	Mon, 7 Apr 2014 16:12:58 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	Waiman Long <Waiman.Long@...com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-arch@...r.kernel.org,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	xen-devel@...ts.xenproject.org, kvm@...r.kernel.org,
	Paolo Bonzini <paolo.bonzini@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Rik van Riel <riel@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	Aswin Chandramouleeswaran <aswin@...com>,
	Scott J Norton <scott.norton@...com>,
	Chegu Vinod <chegu_vinod@...com>,
	Marcos Matsunaga <Marcos.Matsunaga@...cle.com>
Subject: Re: [PATCH v8 01/10] qspinlock: A generic 4-byte queue spinlock
 implementation

On Fri, Apr 04, 2014 at 12:57:27PM -0400, Konrad Rzeszutek Wilk wrote:
> On Fri, Apr 04, 2014 at 03:00:12PM +0200, Peter Zijlstra wrote:
> > 
> > So I'm just not ever going to pick up this patch; I spend a week trying
> > to reverse engineer this; I posted a 7 patch series creating the
> > equivalent, but in a gradual and readable fashion:
> > 
> >   http://lkml.kernel.org/r/20140310154236.038181843@infradead.org
> > 
> > You keep on ignoring that; I'll keep on ignoring your patches.
> > 
> > I might at some point rewrite some of your pv stuff on top to get this
> > moving again, but I'm not really motivated to work with you atm.
> 
> Uh? Did you CC also xen-devel@...ts.xenproject.org on your patches Peter?
> I hadn't had a chance to see or comment on them :-(

No of course not :-)

Also as noted elsewhere, I didn't actually do any PV muck yet. I spend
the time trying to get my head around patch 1; all the while Waiman kept
piling more and more on top.
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