amd_pstate_get_epp
cpudata->epp_default = amd_pstate_get_epp(cpudata);
static_call_update(amd_pstate_get_epp, shmem_get_epp);
DEFINE_STATIC_CALL(amd_pstate_get_epp, msr_get_epp);
return static_call(amd_pstate_get_epp)(cpudata);