Merge tag 'kvm-s390-master-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390: fixup and missing stat

1. A fixup for a bug that was introduced in 4.7-rc1 if userspace uses
   the cpu model ioctls
2. Add the missing kvm stat for pei events

arch/s390/include/asm/kvm_host.h

@@ -245,6 +245,7 @@ struct kvm_vcpu_stat {
 	u32 exit_stop_request;
 	u32 exit_validity;
 	u32 exit_instruction;
+	u32 exit_pei;
 	u32 halt_successful_poll;
 	u32 halt_attempted_poll;
 	u32 halt_poll_invalid;

arch/s390/kvm/intercept.c

@@ -341,6 +341,8 @@ static int handle_mvpg_pei(struct kvm_vcpu *vcpu)
 
 static int handle_partial_execution(struct kvm_vcpu *vcpu)
 {
+	vcpu->stat.exit_pei++;
+
 	if (vcpu->arch.sie_block->ipa == 0xb254)	/* MVPG */
 		return handle_mvpg_pei(vcpu);
 	if (vcpu->arch.sie_block->ipa >> 8 == 0xae)	/* SIGP */

arch/s390/kvm/kvm-s390.c

@@ -61,6 +61,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 	{ "exit_external_request", VCPU_STAT(exit_external_request) },
 	{ "exit_external_interrupt", VCPU_STAT(exit_external_interrupt) },
 	{ "exit_instruction", VCPU_STAT(exit_instruction) },
+	{ "exit_pei", VCPU_STAT(exit_pei) },
 	{ "exit_program_interruption", VCPU_STAT(exit_program_interruption) },
 	{ "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) },
 	{ "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
@@ -657,7 +658,7 @@ static int kvm_s390_set_processor(struct kvm *kvm, struct kvm_device_attr *attr)
 		kvm->arch.model.cpuid = proc->cpuid;
 		lowest_ibc = sclp.ibc >> 16 & 0xfff;
 		unblocked_ibc = sclp.ibc & 0xfff;
-		if (lowest_ibc) {
+		if (lowest_ibc && proc->ibc) {
 			if (proc->ibc > unblocked_ibc)
 				kvm->arch.model.ibc = unblocked_ibc;
 			else if (proc->ibc < lowest_ibc)