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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-07-10 15:27:20 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-07-29 11:02:33 +0200 |
| commit | 71db35d26dbacd3d165522022ecb757ddc1529ea (patch) | |
| tree | 8004e64773cf8cd1e340ab166e597a80ff2d530c /arch/s390/kvm/kvm-s390.h | |
| parent | 15e8b5daabe37b56e8117957ea1a10e99d380ac4 (diff) | |
| download | lwn-71db35d26dbacd3d165522022ecb757ddc1529ea.tar.gz lwn-71db35d26dbacd3d165522022ecb757ddc1529ea.zip | |
KVM: s390: VCPU_EVENT cleanup for prefix changes
SPX (SET PREFIX) and SIGP (Set prefix) can change the prefix
register of a CPU. As sigp set prefix may be handled in user
space (KVM_CAP_S390_USER_SIGP), we would not log the changes
triggered via SIGP in that case. Let's have just one VCPU_EVENT
at the central location that tracks prefix changes.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 81de2af28c9c..0ee5db11598b 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -65,6 +65,8 @@ static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu) static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) { + VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id, + prefix); vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); |