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.przyw...@arm.com> --- 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 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm