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xen-devel
Re: [Xen-devel] [PATCH][v9 4/6] xen/hvm: Xen PV extension of HVM initial
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH][v9 4/6] xen/hvm: Xen PV extension of HVM initialization |
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From: |
Ian Campbell <Ian.Campbell@xxxxxxxxxx> |
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Date: |
Tue, 16 Mar 2010 17:20:10 +0000 |
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Cc: |
xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, "Yaozu \(Eddie\) Dong" <eddie.dong@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, Sheng Yang <sheng@xxxxxxxxxxxxxxx> |
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Tue, 16 Mar 2010 10:23:14 -0700 |
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References: |
<1268362647-5317-1-git-send-email-sheng@xxxxxxxxxxxxxxx> <alpine.DEB.2.00.1003151108151.27222@kaball-desktop> <4B9EBBEE.9020107@xxxxxxxx> <201003160951.48973.sheng@xxxxxxxxxxxxxxx> <4B9FBBEA.2060508@xxxxxxxx> |
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On Tue, 2010-03-16 at 17:12 +0000, Jeremy Fitzhardinge wrote:
> If we need a new vcpuop to make it work
> properly anyway (set tsc offset), then the presence of that should be
> a
> good indicator. In other words, make it depend on its actual fixed
> pre-reqs, rather than a specific flag for the feature.
I don't think a new hypercall is required. Xen should simply pre-account
for the TSC offset which HVM guests are subject to in
__update_vcpu_system_time.
Ian.
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