• Liran Alon's avatar
    KVM: x86: Modify struct kvm_nested_state to have explicit fields for data · 6ca00dfa
    Liran Alon authored
    Improve the KVM_{GET,SET}_NESTED_STATE structs by detailing the format
    of VMX nested state data in a struct.
    In order to avoid changing the ioctl values of
    KVM_{GET,SET}_NESTED_STATE, there is a need to preserve
    sizeof(struct kvm_nested_state). This is done by defining the data
    struct as "data.vmx[0]". It was the most elegant way I found to
    preserve struct size while still keeping struct readable and easy to
    maintain. It does have a misfortunate side-effect that now it has to be
    accessed as "data.vmx[0]" rather than just "data.vmx".
    Because we are already modifying these structs, I also modified the
    * Define the "format" field values as macros.
    * Rename vmcs_pa to vmcs12_pa for better readability.
    Signed-off-by: default avatarLiran Alon <liran.alon@oracle.com>
    [Remove SVM stubs, add KVM_STATE_NESTED_VMX_VMCS12_SIZE. - Paolo]
    Reviewed-by: default avatarLiran Alon <liran.alon@oracle.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
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