Commit 4ed5978b authored Oct 03, 2012 by Stefano Stabellini Committed by Konrad Rzeszutek Wilk Oct 03, 2012

xen/xen_initial_domain: check that xen_start_info is initialized



Since commit commit 4c071ee5 ("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 <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

parent 2e3d8860

include/xen/xen.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -24,7 +24,7 @@ extern enum xen_domain_type xen_domain_type;
		#include <asm/xen/hypervisor.h>

		#define xen_initial_domain() (xen_domain() && \
		xen_start_info->flags & SIF_INITDOMAIN)
		xen_start_info && xen_start_info->flags & SIF_INITDOMAIN)
		#else /* !CONFIG_XEN_DOM0 */
		#define xen_initial_domain() (0)
		#endif /* CONFIG_XEN_DOM0 */

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