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

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Date:	Fri, 4 Apr 2014 19:53:35 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Waiman Long <waiman.long@...com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	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>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.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>
Subject: Re: [PATCH v8 01/10] qspinlock: A generic 4-byte queue spinlock
 implementation


* Waiman Long <waiman.long@...com> wrote:

> On 04/04/2014 09:00 AM, 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.
> 
> Peter, I am sorry that I have focused recently on making the 
> qspinlock patch works with virtualization and it is easier for me to 
> based off on my patch initially. Now the PV part is almost done, I 
> will apply them on top of your patch. Hopefully, I will get a new 
> patch out sometime next week.

Note that it's not "a patch" that PeterZ posted, but a series of 7 
finegrained patches, each properly documented and commented. Please 
preserve that work, build on top of it, and don't just ignore it!

Thanks,

	Ingo
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