From: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Date: Thu, 13 Feb 2025 22:00:27 +0000 (+0000)
Subject: xen: arm: enable stack protector feature
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=84d9702e0a978e841a1addefd22aa63c066452bb;p=people%2Fandrewcoop%2Fxen.git

xen: arm: enable stack protector feature

Enable previously added CONFIG_STACK_PROTECTOR feature for ARM
platform. Initialize stack protector very early, at the very beginning
of start_xen() function.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
---

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index a26d3e1182..8f1a3c7d74 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -16,6 +16,7 @@ config ARM
 	select GENERIC_UART_INIT
 	select HAS_ALTERNATIVE if HAS_VMAP
 	select HAS_DEVICE_TREE
+	select HAS_STACK_PROTECTOR
 	select HAS_UBSAN
 
 config ARCH_DEFCONFIG
diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index c1f2d1b89d..0dca691207 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -30,6 +30,7 @@
 #include <xen/virtual_region.h>
 #include <xen/version.h>
 #include <xen/vmap.h>
+#include <xen/stack-protector.h>
 #include <xen/trace.h>
 #include <xen/libfdt/libfdt-xen.h>
 #include <xen/acpi.h>
@@ -305,6 +306,8 @@ void asmlinkage __init start_xen(unsigned long fdt_paddr)
     struct domain *d;
     int rc, i;
 
+    boot_stack_chk_guard_setup();
+
     dcache_line_bytes = read_dcache_line_bytes();
 
     percpu_init_areas();