[PATCH 6.12.y 0/5] LBR virtualization fixes

[Yosry Ahmed <yosry.ahmed@linux.dev>]

This is a backport of LBR virtualization fixes that recently landed in
Linus's tree to 6.12.y.

Patch 1 is not a backport, it's introducing a helper that exists in
Linus's tree to make the following backports more straightforward to
apply.

Patch 2 should already be in queue-6.12, but it's included here as the
remaining patches depend on it.

Yosry Ahmed (5):
  KVM: SVM: Introduce svm_recalc_lbr_msr_intercepts()
  KVM: SVM: Mark VMCB_LBR dirty when MSR_IA32_DEBUGCTLMSR is updated
  KVM: nSVM: Always recalculate LBR MSR intercepts in svm_update_lbrv()
  KVM: nSVM: Fix and simplify LBR virtualization handling with nested
  KVM: SVM: Fix redundant updates of LBR MSR intercepts

 arch/x86/kvm/svm/nested.c | 20 +++-----
 arch/x86/kvm/svm/svm.c    | 96 ++++++++++++++++++++-------------------
 arch/x86/kvm/svm/svm.h    |  1 +
 3 files changed, 57 insertions(+), 60 deletions(-)

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2.52.0.rc2.455.g230fcf2819-goog