[Qemu-devel] [PATCH v3 08/15] s390x/kvm: Report warnings with warn_report(), not error_printf()

[Markus Armbruster <armbru@redhat.com>]

kvm_s390_mem_op() can fail in two ways: when !cap_mem_op, it returns
-ENOSYS, and when kvm_vcpu_ioctl() fails, it returns -errno set by
ioctl().  Its caller s390_cpu_virt_mem_rw() recovers from both
failures.

kvm_s390_mem_op() prints "KVM_S390_MEM_OP failed" with error_printf()
in the latter failure mode.  Since this is obviously a warning, use
warn_report().

Perhaps the reporting should be left to the caller.  It could warn on
failure other than -ENOSYS.

Cc: Thomas Huth <thuth@redhat.com>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
 target/s390x/kvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 19530fb94e..2c6e35b5aa 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -782,7 +782,7 @@ int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
 
     ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
     if (ret < 0) {
-        error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
+        warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret));
     }
     return ret;
 }
-- 
2.17.2