[PATCH 13/24] xen/arm: get privilege status
Stefano Stabellini
stefano.stabellini at eu.citrix.com
Thu Jul 26 11:33:55 EDT 2012
Use Xen features to figure out if we are privileged.
XENFEAT_dom0 was introduced by 23735 in xen-unstable.hg.
Signed-off-by: Stefano Stabellini <stefano.stabellini at eu.citrix.com>
---
arch/arm/xen/enlighten.c | 7 +++++++
include/xen/interface/features.h | 3 +++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index dc68074..2e013cf 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -2,6 +2,7 @@
#include <xen/interface/xen.h>
#include <xen/interface/memory.h>
#include <xen/platform_pci.h>
+#include <xen/features.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
#include <linux/module.h>
@@ -58,6 +59,12 @@ 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);
+
/* already setup */
if (shared_info_page != 0 && HYPERVISOR_shared_info == shared_info_page)
return 0;
diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h
index b6ca39a..131a6cc 100644
--- a/include/xen/interface/features.h
+++ b/include/xen/interface/features.h
@@ -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__ */
--
1.7.2.5
More information about the linux-arm-kernel
mailing list