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xen-devel
[Xen-devel] Re: [PATCH RFC V5 00/11] Paravirtualized ticketlocks
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH RFC V5 00/11] Paravirtualized ticketlocks |
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From: |
"H. Peter Anvin" <hpa@xxxxxxxxx> |
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Date: |
Fri, 14 Oct 2011 11:37:19 -0700 |
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Cc: |
Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, KVM <kvm@xxxxxxxxxxxxxxx>, konrad.wilk@xxxxxxxxxx, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Jason Baron <jbaron@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, Avi Kivity <avi@xxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Fri, 14 Oct 2011 11:39:07 -0700 |
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<cover.1318466916.git.jeremy.fitzhardinge@xxxxxxxxxx> <1318503245.24856.12.camel@twins> <4E971580.6030300@xxxxxxxx> <20111014141701.GA2433@xxxxxxxxxx> <4E986B2B.60803@xxxxxxxx> |
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On 10/14/2011 10:02 AM, Jeremy Fitzhardinge wrote:
>
> Jump labels are essentially binary: you can use path A or path B. pvops
> are multiway: there's no limit to the number of potential number of
> paravirtualized hypervisor implementations. At the moment we have 4:
> native, Xen, KVM and lguest.
>
This isn't (or shouldn't be) really true... it should be possible to do
an N-way jump label even if the current mechanism doesn't.
-hpa
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