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Re: [Xen-devel] [RFC] Implement Batched (group) ticket lock
- To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
- From: Rik van Riel <riel@xxxxxxxxxx>
- Date: Wed, 28 May 2014 21:18:10 -0400
- Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>, KVM list <kvm@xxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>, Peter Anvin <hpa@xxxxxxxxx>, Andi Kleen <ak@xxxxxxxxxxxxxxx>, Gleb Natapov <gleb@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Paul McKenney <paulmck@xxxxxxxxxxxxxxxxxx>, virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Dave Jones <davej@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, fernando_b1@xxxxxxxxxxxxx, "Vinod, Chegu" <chegu_vinod@xxxxxx>, Waiman Long <waiman.long@xxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>
- Delivery-date: Thu, 29 May 2014 01:19:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 05/28/2014 06:19 PM, Linus Torvalds wrote:
> If somebody has a P4 still, that's likely the worst case by far.
I'm sure cmpxchg isn't the only thing making P4 the worst case :)
--
All rights reversed
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