parisc,metag: Do not hardcode maximum userspace stack size

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / parisc / include / asm / processor.h

diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
index cc2290a..d951c96 100644 (file)
--- a/arch/parisc/include/asm/processor.h
+++ b/arch/parisc/include/asm/processor.h
@@ -30,6 +30,8 @@
 #endif
 #define current_text_addr() ({ void *pc; current_ia(pc); pc; })
 
+#define HAVE_ARCH_PICK_MMAP_LAYOUT
+
 #define TASK_SIZE_OF(tsk)       ((tsk)->thread.task_size)
 #define TASK_SIZE              TASK_SIZE_OF(current)
 #define TASK_UNMAPPED_BASE      (current->thread.map_base)
@@ -53,6 +55,11 @@
 #define STACK_TOP      TASK_SIZE
 #define STACK_TOP_MAX  DEFAULT_TASK_SIZE
 
+/* Allow bigger stacks for 64-bit processes */
+#define STACK_SIZE_MAX (USER_WIDE_MODE                                 \
+                        ? (1 << 30)    /* 1 GB */                      \
+                        : (CONFIG_MAX_STACK_SIZE_MB*1024*1024))
+
 #endif
 
 #ifndef __ASSEMBLY__