• Sean Christopherson's avatar
    KVM: selftests: Mostly fix broken Hyper-V Features test · 9f88d062
    Sean Christopherson authored
    Explicitly do all setup at every stage of the Hyper-V Features test, e.g.
    set the MSR/hypercall, enable capabilities, etc...  Now that the VM is
    recreated for every stage, values that are written into the VM's address
    space, i.e. shared with the guest, are reset between sub-tests, as are
    any capabilities, etc...
    
    Fix the hypercall params as well, which were broken in the same rework.
    The "hcall" struct/pointer needs to point at the hcall_params object, not
    the set of hypercall pages.
    
    The goofs were hidden by the test's dubious behavior of using '0' to
    signal "done", i.e. the MSR test ran exactly one sub-test, and the
    hypercall test was a gigantic nop.
    
    Fixes: 6c118643 ("KVM: selftests: Avoid KVM_SET_CPUID2 after KVM_RUN in hyperv_features test")
    Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
    Message-Id: <20220608224516.3788274-4-seanjc@google.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    9f88d062
hyperv_features.c 15.2 KB