1349283812 -0400 xen/xen_initial_domain: check that xen_start_info is initialized Since commit commit 4c071ee5268f7234c3d084b6093bebccc28cdcba ("arm: initial Xen support") PV on HVM guests can be xen_initial_domain. However PV on HVM guests might have an unitialized xen_start_info, so check before accessing its fields. Signed-off-by: Stefano Stabellini Acked-by: Ian Campbell Reported-by: Konrad Rzeszutek Wilk Signed-off-by: Konrad Rzeszutek Wilk