arch: increase privileged stack with mpu stack guard

nashif · nashif · commit 005f6c7a0448 · 2018-10-19T16:09:50.000-04:00
After commit 3fb6ea2 the stack is not enough and a few tests have been failing. Fixes zephyrproject-rtos#10632 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/arch/Kconfig b/arch/Kconfig
@@ -105,6 +105,7 @@ config USERSPACE
 
 config PRIVILEGED_STACK_SIZE
 	int "Size of privileged stack"
+	default 512 if MPU_STACK_GUARD
 	default 384 if ARC
 	default 256
 	depends on ARCH_HAS_USERSPACE
