powerpc/kvm/book3s_hv.c

187 	/* If we're a nested hypervisor, fall back to ordinary IPIs for now */
322 	u64 now;
333 	now = mftb();
342 		kvmppc_core_end_stolen(vc, now);
347 		vcpu->arch.busy_stolen += now - vcpu->arch.busy_preempt;
357 	u64 now;
375 	now = mftb();
378 		kvmppc_core_start_stolen(vc, now);
382 		vcpu->arch.busy_preempt = now;
710 		 * If it's now too short, it must be that userspace
770  * Return the accumulated stolen time for the vcore up until `now'.
773 static u64 vcore_stolen_time(struct kvmppc_vcore *vc, u64 now)
784 		p += now - vc->preempt_tb;
791 					unsigned int pcpu, u64 now,
807 	dt->timebase = cpu_to_be64(now);
829 	u64 now;
836 	now = mftb();
838 	core_stolen = vcore_stolen_time(vc, now);
848 	__kvmppc_create_dtl_entry(vcpu, vpa, vc->pcpu, now + kvmppc_get_tb_offset(vcpu), stolen);
855 				       u64 now)
871 	__kvmppc_create_dtl_entry(vcpu, vpa, vc->pcpu, now, stolen_delta);
3157 	unsigned long dec_nsec, now;
3159 	now = get_tb();
3160 	if (now > kvmppc_dec_expires_host_tb(vcpu)) {
3166 	dec_nsec = tb_to_ns(kvmppc_dec_expires_host_tb(vcpu) - now);
3176 	u64 now;
3181 	now = tb;
3182 	vcpu->arch.busy_stolen += vcore_stolen_time(vc, now) -
3184 	vcpu->arch.busy_preempt = now;
3649 	u64 now;
3654 	now = get_tb();
3665 		if (now < kvmppc_dec_expires_host_tb(vcpu) &&
4025 	/* prevent other vcpu threads from doing kvmppc_start_thread() now */
4078 	/* make sure updates to secondary vcpu structs are visible now */
4284 		/* H_CEDE has to be handled now, not later */
4314 				/* H_CEDE has to be handled now */
4856 	 * cancel pending decrementer exception if DEC is now positive, or if
4857 	 * entering a nested guest in which case the decrementer is now owned
5006 				 * into the guest by now. Final sanity check:
5079 	/* We only support these sizes for now, and no muti-size segments */
5338 	/* We must have some memory at 0 by now */
5682 	 * Track that we now have a HV mode VM active. This blocks secondary
5829 	 * For now, we only support interrupts for which the EOI operation
6114 	/* We can change a guest to/from radix now, if the host is radix */
6183 	/* For now quadrants are the only way to access nested guest memory */
6202 	/* For now quadrants are the only way to access nested guest memory */