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@xxxxxxxxxx>
Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
---
arch/s390/kvm/interrupt.c | 1 -
arch/s390/kvm/kvm-s390.h | 2 ++
arch/s390/kvm/priv.c | 2 --
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 c98d897..8b3a117 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 81de2af..0ee5db1 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 1b95d29..2658a791 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 72e58bd..5318ea3 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;
--
2.3.0
--
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