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Commit ef61ee0d authored by Stefano Stabellini's avatar Stefano Stabellini
Browse files

xen/arm: get privilege status 



Use Xen features to figure out if we are privileged.

XENFEAT_dom0 was introduced by 23735 in xen-unstable.hg.

Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent eff8d644

arch/arm/xen/enlighten.c

+7 −0
Original line number Diff line number Diff line 
#include <xen/xen.h>

#include <xen/interface/xen.h>

#include <xen/interface/memory.h>

#include <xen/features.h>

#include <xen/platform_pci.h>

#include <asm/xen/hypervisor.h>

#include <asm/xen/hypercall.h>
@@ -66,6 +67,12 @@ static int __init xen_guest_init(void) 
	}

	xen_domain_type = XEN_HVM_DOMAIN;



	xen_setup_features();

	if (xen_feature(XENFEAT_dom0))

		xen_start_info->flags |= SIF_INITDOMAIN|SIF_PRIVILEGED;

	else

		xen_start_info->flags &= ~(SIF_INITDOMAIN|SIF_PRIVILEGED);



	if (!shared_info_page)

		shared_info_page = (struct shared_info *)

			get_zeroed_page(GFP_KERNEL);

include/xen/interface/features.h

+3 −0
Original line number Diff line number Diff line
@@ -50,6 +50,9 @@ 
/* x86: pirq can be used by HVM guests */

#define XENFEAT_hvm_pirqs           10



/* operation as Dom0 is supported */

#define XENFEAT_dom0                      11



#define XENFEAT_NR_SUBMAPS 1



#endif /* __XEN_PUBLIC_FEATURES_H__ */