Re: [PATCH 00/15] Unify MSR intercepts in x86

[Sean Christopherson <seanjc@google.com>]

On Wed, Nov 27, 2024, Aaron Lewis wrote:
> The goal of this series is to unify MSR intercepts into common code between
> VMX and SVM.
> 
> The high level structure of this series is to:
>  1. Modify SVM MSR intercepts to adopt how VMX does it.
>  2. Hoist the newly updated SVM MSR intercept implementation to common x86 code.
>  3. Hoist the VMX MSR intercept implementation to common x86 code.
> 
> Aaron Lewis (8):
>   KVM: SVM: Invert the polarity of the "shadow" MSR interception bitmaps
>   KVM: SVM: Track MSRPM as "unsigned long", not "u32"
>   KVM: x86: SVM: Adopt VMX style MSR intercepts in SVM
>   KVM: SVM: Don't "NULL terminate" the list of possible passthrough MSRs
>   KVM: x86: Track possible passthrough MSRs in kvm_x86_ops
>   KVM: x86: Move ownership of passthrough MSR "shadow" to common x86
>   KVM: x86: Hoist SVM MSR intercepts to common x86 code
>   KVM: x86: Hoist VMX MSR intercepts to common x86 code
> 
> Anish Ghulati (2):
>   KVM: SVM: Disable intercepts for all direct access MSRs on MSR filter changes
>   KVM: SVM: Delete old SVM MSR management code
> 
> Sean Christopherson (5):
>   KVM: x86: Use non-atomic bit ops to manipulate "shadow" MSR intercepts
>   KVM: SVM: Use non-atomic bit ops to manipulate MSR interception bitmaps
>   KVM: SVM: Pass through GHCB MSR if and only if VM is SEV-ES
>   KVM: SVM: Drop "always" flag from list of possible passthrough MSRs
>   KVM: VMX: Make list of possible passthrough MSRs "const"
> 
>  arch/x86/include/asm/kvm-x86-ops.h |   5 +-
>  arch/x86/include/asm/kvm_host.h    |  18 ++
>  arch/x86/kvm/svm/sev.c             |  11 +-
>  arch/x86/kvm/svm/svm.c             | 300 ++++++++++++-----------------
>  arch/x86/kvm/svm/svm.h             |  30 +--
>  arch/x86/kvm/vmx/main.c            |  30 +++
>  arch/x86/kvm/vmx/vmx.c             | 144 +++-----------
>  arch/x86/kvm/vmx/vmx.h             |  11 +-
>  arch/x86/kvm/x86.c                 | 129 ++++++++++++-
>  arch/x86/kvm/x86.h                 |   3 +
>  10 files changed, 358 insertions(+), 323 deletions(-)
> 
> -- 
> 2.47.0.338.g60cca15819-goog

Please use `git format-patch` with `--base`, and in general read
Documentation/process/maintainer-kvm-x86.rst and
Documentation/process/maintainer-tip.rst