linux-kernel - [PATCH 0/6] KVM: x86: Clean up "force immediate exit" code

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Date: Tue,  9 Jan 2024 17:26:59 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH 0/6] KVM: x86: Clean up "force immediate exit" code

Plumb "force_immediate_exit" into the kvm_entry() tracepoint, as
suggested by Maxim, and then follow that up with cleanups that are made
possible by having force_immediate_exit made available to .vcpu_run(),
e.g. VMX can use the on-stack param instead of what is effectively a
temporary field in vcpu_vmx.

Sean Christopherson (6):
  KVM: x86: Plumb "force_immediate_exit" into kvm_entry() tracepoint
  KVM: VMX: Re-enter guest in fastpath for "spurious" preemption timer
    exits
  KVM: VMX: Handle forced exit due to preemption timer in fastpath
  KVM: x86: Move handling of is_guest_mode() into fastpath exit handlers
  KVM: VMX: Handle KVM-induced preemption timer exits in fastpath for L2
  KVM: x86: Fully defer to vendor code to decide how to force immediate
    exit

 arch/x86/include/asm/kvm-x86-ops.h |  1 -
 arch/x86/include/asm/kvm_host.h    |  6 +--
 arch/x86/kvm/svm/svm.c             | 18 ++++---
 arch/x86/kvm/trace.h               |  9 ++--
 arch/x86/kvm/vmx/vmx.c             | 80 +++++++++++++++++++-----------
 arch/x86/kvm/vmx/vmx.h             |  2 -
 arch/x86/kvm/x86.c                 | 12 +----
 7 files changed, 72 insertions(+), 56 deletions(-)


base-commit: 1c6d984f523f67ecfad1083bb04c55d91977bb15
-- 
2.43.0.472.g3155946c3a-goog