linux-kernel - [PATCH 0/4] KVM: x86: Collect host state snapshots into a struct

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Message-ID: <20240423221521.2923759-1-seanjc@google.com>
Date: Tue, 23 Apr 2024 15:15:17 -0700
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
Subject: [PATCH 0/4] KVM: x86: Collect host state snapshots into a struct

Add a global "kvm_host" structure to hold various host values, e.g. for
EFER, XCR0, raw MAXPHYADDR etc., instead of having a bunch of one-off
variables that inevitably need to be exported, or in the case of
shadow_phys_bits, are buried in a random location and are awkward to use,
leading to duplicate code.

Sean Christopherson (4):
  KVM: x86: Add a struct to consolidate host values, e.g. EFER, XCR0,
    etc...
  KVM: SVM: Use KVM's snapshot of the host's XCR0 for SEV-ES host state
  KVM: x86/mmu: Snapshot shadow_phys_bits when kvm.ko is loaded
  KVM: x86: Move shadow_phys_bits into "kvm_host", as "maxphyaddr"

 arch/x86/include/asm/kvm_host.h |  1 -
 arch/x86/kvm/mmu.h              | 27 +----------------------
 arch/x86/kvm/mmu/mmu.c          |  2 +-
 arch/x86/kvm/mmu/spte.c         | 26 ++++++++++++++++++----
 arch/x86/kvm/svm/sev.c          |  4 ++--
 arch/x86/kvm/vmx/nested.c       |  8 +++----
 arch/x86/kvm/vmx/vmx.c          | 28 +++++++++++-------------
 arch/x86/kvm/vmx/vmx.h          |  2 +-
 arch/x86/kvm/x86.c              | 38 +++++++++++++--------------------
 arch/x86/kvm/x86.h              | 19 +++++++++++++----
 10 files changed, 74 insertions(+), 81 deletions(-)


base-commit: 7b076c6a308ec5bce9fc96e2935443ed228b9148
-- 
2.44.0.769.g3c40516874-goog