[PATCH 4/5] Xen efi: Add xen efi enabled detect

[Tang Liang]

We need to use hypercall to detect the xen efi enabled or not.
If xen efi enable is set,replace the efi public function to xen efi public
function and set efi_enabled to 1 in the function efi_probe;

Signed-off-by: Tang Liang <liang.tang@xxxxxxxxxx>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 arch/x86/xen/enlighten.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 12eb07b..92982c1 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -31,6 +31,7 @@
 #include <linux/pci.h>
 #include <linux/gfp.h>
 #include <linux/memblock.h>
+#include <linux/efi.h>
 
 #include <xen/xen.h>
 #include <xen/interface/xen.h>
@@ -1282,6 +1283,8 @@ asmlinkage void __init xen_start_kernel(void)
 
 	xen_setup_runstate_info(0);
 
+	if (xen_initial_domain())
+		xen_efi_probe();
 	/* Start the world */
 #ifdef CONFIG_X86_32
 	i386_start_kernel();
-- 
1.7.7.5

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