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Re: [Xen-devel] [PATCH v2 2/4] x86/nvmx: only update SVI when using Ack on exit

  • To: Roger Pau Monne <roger.pau@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Thu, 26 Mar 2020 02:48:58 +0000
  • Accept-language: en-US
  • Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
  • Delivery-date: Thu, 26 Mar 2020 02:49:32 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH v2 2/4] x86/nvmx: only update SVI when using Ack on exit

> From: Roger Pau Monne <roger.pau@xxxxxxxxxx>
> Sent: Wednesday, March 25, 2020 6:19 PM
> Check whether there's a valid interrupt in VM_EXIT_INTR_INFO in order
> to decide whether to update SVI in nvmx_update_apicv. If Ack on exit
> is not being used VM_EXIT_INTR_INFO won't have a valid interrupt and
> hence SVI shouldn't be updated to signal the interrupt is currently in
> service because it won't be Acked.
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

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



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