CSID_X86_KVM_CLK
.id = CSID_X86_KVM_CLK,
*cs_id = CSID_X86_KVM_CLK;
system_counter->cs_id = CSID_X86_KVM_CLK;
if (READ_ONCE(st->sys_cs_id) == CSID_X86_KVM_CLK)
systime_snapshot.cs_id == CSID_X86_KVM_CLK) {