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Re: [Xen-devel] [PATCH] VMX: don't needlessly write CR4 guest/host mask

  • To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Mon, 2 Jul 2018 05:44:23 +0000
  • Accept-language: en-US
  • Cc: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Delivery-date: Mon, 02 Jul 2018 05:44:42 +0000
  • Dlp-product: dlpe-windows
  • Dlp-reaction: no-action
  • Dlp-version: 11.0.200.100
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Thread-index: AQHUD6tk32s7YCVBFEuOgTLz3VCfMKR7cApA
  • Thread-topic: [PATCH] VMX: don't needlessly write CR4 guest/host mask
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Friday, June 29, 2018 9:16 PM
> 
> In shadow mode the field never changes from ~0UL, so there's no need for
> a VMWRITE (or an update of its cached value).
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

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

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