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Date: Wed, 26 Oct 2011 12:34:03 +0200
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To: Raghavendra K T <raghukt@linux.vnet.ibm.com>
CC: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
        Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
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        Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>, x86@kernel.org,
        KVM <kvm@vger.kernel.org>, Dave Jiang <dave.jiang@intel.com>,
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        Suzuki Poulose <suzuki@linux.vnet.ibm.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH RFC V2 3/5] kvm hypervisor : Add two hypercalls to support
 pv-ticketlock
References: <20111023190307.16364.35381.sendpatchset@oc5400248562.ibm.com> <20111023190558.16364.2136.sendpatchset@oc5400248562.ibm.com> <4EA53A7D.300@redhat.com> <20111024122734.GA10634@linux.vnet.ibm.com> <4EA56385.9040302@redhat.com> <20111024135032.GB10634@linux.vnet.ibm.com> <4EA6FEC2.1060209@linux.vnet.ibm.com>
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On 10/25/2011 08:24 PM, Raghavendra K T wrote:
>
> So then do also you foresee the need for directed yield at some point,
> to address LHP? provided we have good improvements to prove.

Doesn't this patchset completely eliminate lock holder preemption?

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.