[PATCH v2 13/23] xen/arm: get privilege status
From: Stefano Stabellini <hidden>
Date: 2012-08-06 14:56:33
Also in:
lkml, xen-devel
Subsystem:
arm port, the rest, xen hypervisor arm, xen hypervisor interface · Maintainers:
Russell King, Linus Torvalds, Stefano Stabellini, Juergen Gross
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 <redacted> --- 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 102d823..ac3a2d6 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c@@ -1,6 +1,7 @@ #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>
@@ -57,6 +58,12 @@ 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);
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