When a KVM_{GET,SET}_MSRS ioctl() fails, it is difficult to find
out which MSR caused the problem. Print an error message for
debugging, before we trigger the (ret == cpu->kvm_msr_buf->nmsrs)
assert.
Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <
20170309194634.28457-1-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
return ret;
}
+ if (ret < cpu->kvm_msr_buf->nmsrs) {
+ struct kvm_msr_entry *e = &cpu->kvm_msr_buf->entries[ret];
+ error_report("error: failed to set MSR 0x%" PRIx32 " to 0x%" PRIx64,
+ (uint32_t)e->index, (uint64_t)e->data);
+ }
+
assert(ret == cpu->kvm_msr_buf->nmsrs);
return 0;
}
return ret;
}
+ if (ret < cpu->kvm_msr_buf->nmsrs) {
+ struct kvm_msr_entry *e = &cpu->kvm_msr_buf->entries[ret];
+ error_report("error: failed to get MSR 0x%" PRIx32,
+ (uint32_t)e->index);
+ }
+
assert(ret == cpu->kvm_msr_buf->nmsrs);
/*
* MTRR masks: Each mask consists of 5 parts