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Re: [Xen-devel] [PATCH for-next] x86/VT-x: Don't use rdmsr() to fill HOST_SYSENTER_{CS, EIP}

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxx>
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Mon, 23 Oct 2017 07:17:28 +0000
Accept-language: en-US
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>
Delivery-date: Mon, 23 Oct 2017 07:17:53 +0000
Dlp-product: dlpe-windows
Dlp-reaction: no-action
Dlp-version: 11.0.0.116
List-id: Xen developer discussion <xen-devel.lists.xen.org>
Thread-index: AQHTSaweJAitrDmdW0yX2yBamiXjkqLxCoew
Thread-topic: [PATCH for-next] x86/VT-x: Don't use rdmsr() to fill HOST_SYSENTER_{CS,EIP}

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Friday, October 20, 2017 10:02 PM
> 
> These are compile-time constants, and don't need to be read back from
> hardware.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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References:
- [Xen-devel] [PATCH for-next] x86/VT-x: Don't use rdmsr() to fill HOST_SYSENTER_{CS, EIP}
  - From: Andrew Cooper

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