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[PATCH for-4.17 0/2] vapic: followup from assisted APIC series


  • To: xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Roger Pau Monne <roger.pau@xxxxxxxxxx>
  • Date: Fri, 4 Nov 2022 15:22:33 +0100
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  • Cc: Henry.Wang@xxxxxxx, Roger Pau Monne <roger.pau@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>
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  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hello,

Patch 1 is a plain bugfix for a feature we expose in viridian, which is
kind of unrelated to the series but patch 2 in its current form depends
on it.

Patch 2 is the actual meat and changes which features get reported as
part of the x{2,}APIC assist flag.  This is an attempt to repurpose the
flags so we don't release a version of Xen with a set of flags that we
will then either remove or use to report different hardware features.

Thanks, Roger.

Roger Pau Monne (2):
  viridian: suggest MSR APIC accesses if MSR accesses are accelerated
  hvm/apic: repurpose the reporting of the APIC assist options

 xen/arch/x86/hvm/viridian/viridian.c |  6 +++++-
 xen/arch/x86/hvm/vmx/vmcs.c          |  8 ++++----
 xen/arch/x86/hvm/vmx/vmx.c           | 25 ++++++++++++++++++-------
 xen/arch/x86/traps.c                 |  4 +---
 4 files changed, 28 insertions(+), 15 deletions(-)

-- 
2.37.3




 


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