Enable previously added CONFIG_STACK_PROTECTOR feature for ARM
platform. Here we can call boot_stack_chk_guard_setup() in start_xen()
function, because it never returns, so stack protector code will not
be triggered because of changed canary.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
---
 xen/arch/arm/Kconfig | 1 +
 xen/arch/arm/setup.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 15b2e4a227..8fbb31bc07 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -17,6 +17,7 @@ config ARM
 	select HAS_PASSTHROUGH
 	select HAS_UBSAN
 	select IOMMU_FORCE_PT_SHARE
+	select HAS_STACK_PROTECTOR
 
 config ARCH_DEFCONFIG
 	string
diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index 71ebaa77ca..2bd3caf90b 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -13,6 +13,7 @@
 #include <xen/domain_page.h>
 #include <xen/grant_table.h>
 #include <xen/types.h>
+#include <xen/stack_protector.h>
 #include <xen/string.h>
 #include <xen/serial.h>
 #include <xen/sched.h>
@@ -341,6 +342,8 @@ void asmlinkage __init start_xen(unsigned long fdt_paddr)
      */
     system_state = SYS_STATE_boot;
 
+    boot_stack_chk_guard_setup();
+
     if ( acpi_disabled )
     {
         printk("Booting using Device Tree\n");
-- 
2.47.0