• Aneesh Kumar K.V's avatar
    kvm: powerpc: book3s: Add is_hv_enabled to kvmppc_ops · 699cc876
    Aneesh Kumar K.V authored
    This help us to identify whether we are running with hypervisor mode KVM
    enabled. The change is needed so that we can have both HV and PR kvm
    enabled in the same kernel.
    
    If both HV and PR KVM are included, interrupts come in to the HV version
    of the kvmppc_interrupt code, which then jumps to the PR handler,
    renamed to kvmppc_interrupt_pr, if the guest is a PR guest.
    
    Allowing both PR and HV in the same kernel required some changes to
    kvm_dev_ioctl_check_extension(), since the values returned now can't
    be selected with #ifdefs as much as previously. We look at is_hv_enabled
    to return the right value when checking for capabilities.For capabilities that
    are only provided by HV KVM, we return the HV value only if
    is_hv_enabled is true. For capabilities provided by PR KVM but not HV,
    we return the PR value only if is_hv_enabled is false.
    
    NOTE: in later patch we replace is_hv_enabled with a static inline
    function comparing kvm_ppc_ops
    Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
    Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
    699cc876
kvm_ppc.h 15.8 KB