With CONFIG_VMAP_STACK=y the kernel stack of all tasks should be
allocated in the vmalloc space. The initial stack used for all
the early init code is in the init_thread_union. To be able to
switch from this early stack to a properly allocated stack
from vmalloc the architecture needs a switch-over point.
Introduce the arch_call_rest_init() function with a weak definition
in init/main.c with the only purpose to call rest_init() from the
end of start_kernel(). The architecture override can then do the
necessary magic to switch to the new vmalloc'ed stack.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
up something else. */
extern asmlinkage void __init start_kernel(void);
+extern void __init arch_call_rest_init(void);
+extern void __ref rest_init(void);
#endif /* _LINUX_START_KERNEL_H */
static __initdata DECLARE_COMPLETION(kthreadd_done);
-static noinline void __ref rest_init(void)
+noinline void __ref rest_init(void)
{
struct task_struct *tsk;
int pid;
pti_init();
}
+void __init __weak arch_call_rest_init(void)
+{
+ rest_init();
+}
+
asmlinkage __visible void __init start_kernel(void)
{
char *command_line;
}
/* Do the rest non-__init'ed, we're now alive */
- rest_init();
+ arch_call_rest_init();
}
/* Call all constructor functions linked into the kernel. */