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

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

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 37b9017c6a96b70d5a9460be9923a44663268ff8..ac82e8eb936dc673e8079f4c91e170adf1075fc9 100644 (file)
--- a/arch/s390/include/asm/kvm_host.h
+++ b/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;

diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 2e6b54e4d3f955d1c7971fce4ad02551eeac3846..252157181302e43edb4dac6e675108002009b30a 100644 (file)
--- a/arch/s390/kvm/intercept.c
+++ b/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 */

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 6d8ec3ac9dd8ec675d4d138a83888fa371138bcb..43f2a2b80490ce44d6d425efdeab9fbe7491b5bc 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/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)