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Re: [Xen-devel] [PATCH for-next] x86/VT-x: Don't rewrite HOST_TR_SELECTOR on every context switch

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxx>
From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
Date: Mon, 23 Oct 2017 06:10:41 +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 06:11:09 +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: AQHTR2whgkDenZBuzk6GT/4KrRs2/qLw/GFQ
Thread-topic: [PATCH for-next] x86/VT-x: Don't rewrite HOST_TR_SELECTOR on every context switch

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Wednesday, October 18, 2017 1:16 AM
> 
> TSS_ENTRY is a compile time constant, so HOST_TR_SELECTOR can be set
> up during
> VMCS construction and left alone thereafter, rather than rewriting it on
> every
> context switch.
> 
> 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 rewrite HOST_TR_SELECTOR on every context switch
  - From: Andrew Cooper

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