The KVM ioctls mostly just return -1 in the error case, leaving the
actual error code in errno.
Change the output of the PMU error message to actually print this error
code instead of the generic -1.
Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
---
arm/pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arm/pmu.c b/arm/pmu.c
index 69c37fae..ffd152e2 100644
--- a/arm/pmu.c
+++ b/arm/pmu.c
@@ -18,7 +18,7 @@ static int set_pmu_attr(struct kvm *kvm, int vcpu_idx,
if (!ret) {
ret = ioctl(fd, KVM_SET_DEVICE_ATTR, attr);
if (ret)
- pr_err("PMU KVM_SET_DEVICE_ATTR failed (%d)\n", ret);
+ perror("PMU KVM_SET_DEVICE_ATTR failed");
} else {
pr_err("Unsupported PMU on vcpu%d\n", vcpu_idx);
}
--
2.17.1
