• Sean Christopherson's avatar
    KVM: x86: Add intr/vectoring info and error code to kvm_exit tracepoint · 235ba74f
    Sean Christopherson authored
    Extend the kvm_exit tracepoint to align it with kvm_nested_vmexit in
    terms of what information is captured.  On SVM, add interrupt info and
    error code, while on VMX it add IDT vectoring and error code.  This
    sets the stage for macrofying the kvm_exit tracepoint definition so that
    it can be reused for kvm_nested_vmexit without loss of information.
    
    Opportunistically stuff a zero for VM_EXIT_INTR_INFO if the VM-Enter
    failed, as the field is guaranteed to be invalid.  Note, it'd be
    possible to further filter the interrupt/exception fields based on the
    VM-Exit reason, but the helper is intended only for tracepoints, i.e.
    an extra VMREAD or two is a non-issue, the failed VM-Enter case is just
    low hanging fruit.
    Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
    Message-Id: <20200923201349.16097-5-sean.j.christopherson@intel.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    235ba74f
vmx.c 218 KB