diff mbox

[GIT,PULL,09/16] KVM: s390: add more debug data for the pfault diagnoses

Message ID 1438160766-108179-10-git-send-email-borntraeger@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Borntraeger July 29, 2015, 9:05 a.m. UTC 
We're not only interested in the address of the control block, but
also in the requested subcommand and for the token subcommand, in the
specified token address and masks.

Suggested-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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>
---
 arch/s390/kvm/diag.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 1871754..5fbfb88 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -88,6 +88,9 @@  static int __diag_page_ref_service(struct kvm_vcpu *vcpu)
 
 	switch (parm.subcode) {
 	case 0: /* TOKEN */
+		VCPU_EVENT(vcpu, 3, "pageref token addr 0x%llx "
+			   "select mask 0x%llx compare mask 0x%llx",
+			   parm.token_addr, parm.select_mask, parm.compare_mask);
 		if (vcpu->arch.pfault_token != KVM_S390_PFAULT_TOKEN_INVALID) {
 			/*
 			 * If the pagefault handshake is already activated,
@@ -117,6 +120,7 @@  static int __diag_page_ref_service(struct kvm_vcpu *vcpu)
 		 * the cancel, therefore to reduce code complexity, we assume
 		 * all outstanding tokens are already pending.
 		 */
+		VCPU_EVENT(vcpu, 3, "pageref cancel addr 0x%llx", parm.token_addr);
 		if (parm.token_addr || parm.select_mask ||
 		    parm.compare_mask || parm.zarch)
 			return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);