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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 | |
| 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>
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 1 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/priv.c | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/sigp.c | 3 |
4 files changed, 2 insertions, 6 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index c98d89708e99..8b3a1178cb0b 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -427,7 +427,6 @@ static int __must_check __deliver_set_prefix(struct kvm_vcpu *vcpu) clear_bit(IRQ_PEND_SET_PREFIX, &li->pending_irqs); spin_unlock(&li->lock); - VCPU_EVENT(vcpu, 4, "interrupt: set prefix to %x", prefix.address); vcpu->stat.deliver_prefix_signal++; trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_SIGP_SET_PREFIX, 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); diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 1b95d2934472..2658a7919c5e 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -98,8 +98,6 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); kvm_s390_set_prefix(vcpu, address); - - VCPU_EVENT(vcpu, 5, "setting prefix to %x", address); trace_kvm_s390_handle_prefix(vcpu, 1, address); return 0; } diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 72e58bd2bee7..5318ea3ad1d3 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -205,9 +205,6 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, struct kvm_vcpu *dst_vcpu, *reg &= 0xffffffff00000000UL; *reg |= SIGP_STATUS_INCORRECT_STATE; return SIGP_CC_STATUS_STORED; - } else if (rc == 0) { - VCPU_EVENT(vcpu, 4, "set prefix of cpu %02x to %x", - dst_vcpu->vcpu_id, irq.u.prefix.address); } return rc; |