linux-kernel - [PATCH 0/3] KVM: VMX: MSR intercept/passthrough cleanup and simplification

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Date: Fri, 16 Feb 2024 17:45:10 -0800
From: Dongli Zhang <dongli.zhang@...cle.com>
To: kvm@...r.kernel.org
Cc: seanjc@...gle.com, pbonzini@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] KVM: VMX: MSR intercept/passthrough cleanup and simplification

The 1st patch is to fix a comment.

The 2nd patch is to avoid running into many vmx_enable_intercept_for_msr() or
vmx_disable_intercept_for_msr() that may return immediately, when
vmx_msr_bitmap is not supported.

The 3rd patch is to simplify vmx_enable_intercept_for_msr() and
vmx_disable_intercept_for_msr(), to avoid calling
possible_passthrough_msr_slot() twice.

Thank you very much!

Dongli Zhang (3):
  KVM: VMX: fix comment to add LBR to passthrough MSRs
  KVM: VMX: return early if msr_bitmap is not supported
  KVM: VMX: simplify MSR interception enable/disable

 arch/x86/kvm/vmx/vmx.c | 60 ++++++++++++++++++++++++---------------------
 1 file changed, 32 insertions(+), 28 deletions(-)

base-commit: 7455665a3521aa7b56245c0a2810f748adc5fdd4