More KVM backports, this time for 6.12.y (and with far fewer dependencies). Same note/caveat about Sasha already posting[1][2] many/most of these: KVM: VMX: Allow guest to set DEBUGCTL.RTM_DEBUG if RTM is supported KVM: VMX: Extract checking of guest's DEBUGCTL into helper KVM: nVMX: Check vmcs12->guest_ia32_debugctl on nested VM-Enter KVM: VMX: Wrap all accesses to IA32_DEBUGCTL with getter/setter APIs I'm including them here to hopefully make life easier for y'all, and because the order they are presented here is the preferred ordering, i.e. should be the same ordering as the original upstream patches. But, if you end up grabbing Sasha's patches first, it's not a big deal as the only true dependencies is that the DEBUGCTL.RTM_DEBUG patch needs to land before "Check vmcs12->guest_ia32_debugctl on nested VM-Enter". [1] https://lore.kernel.org/all/20250813182455.2068642-1-sashal@xxxxxxxxxx [2] https://lore.kernel.org/all/20250814125614.2090890-1-sashal@xxxxxxxxxx Maxim Levitsky (3): KVM: nVMX: Check vmcs12->guest_ia32_debugctl on nested VM-Enter KVM: VMX: Wrap all accesses to IA32_DEBUGCTL with getter/setter APIs KVM: VMX: Preserve host's DEBUGCTLMSR_FREEZE_IN_SMM while running the guest Sean Christopherson (4): KVM: x86: Convert vcpu_run()'s immediate exit param into a generic bitmap KVM: x86: Drop kvm_x86_ops.set_dr6() in favor of a new KVM_RUN flag KVM: VMX: Allow guest to set DEBUGCTL.RTM_DEBUG if RTM is supported KVM: VMX: Extract checking of guest's DEBUGCTL into helper arch/x86/include/asm/kvm-x86-ops.h | 1 - arch/x86/include/asm/kvm_host.h | 15 ++++++-- arch/x86/include/asm/msr-index.h | 1 + arch/x86/kvm/svm/svm.c | 14 ++++---- arch/x86/kvm/vmx/main.c | 3 +- arch/x86/kvm/vmx/nested.c | 21 ++++++++--- arch/x86/kvm/vmx/pmu_intel.c | 8 ++--- arch/x86/kvm/vmx/vmx.c | 57 ++++++++++++++++++------------ arch/x86/kvm/vmx/vmx.h | 26 ++++++++++++++ arch/x86/kvm/vmx/x86_ops.h | 2 +- arch/x86/kvm/x86.c | 25 ++++++++++--- 11 files changed, 125 insertions(+), 48 deletions(-) base-commit: 8f5ff9784f3262e6e85c68d86f8b7931827f2983 -- 2.51.0.rc1.163.g2494970778-goog
