microblaze: Remove noMMU code

This configuration is obsolete and likely none is really using it. That's
why remove it to simplify code.

Note about CONFIG_MMU in hw_exception_handler.S is left intentionally
for better comment understanding.

Cc: Mike Rapoport <rppt@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/43486cab370e0c0a79860120b71e0caac75a7e44.1606397528.git.michal.simek@xilinx.com

1 files changed, 0 insertions, 37 deletions

diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 1ff5a82b76b6..f4f3048cde4c 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -31,42 +31,6 @@ extern void ret_from_kernel_thread(void);
 
 # endif /* __ASSEMBLY__ */
 
-# ifndef CONFIG_MMU
-/*
- * User space process size: memory size
- *
- * TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
- * user processes and the kernel is on the same memory region. They
- * both share the memory space and that is limited by the amount of
- * physical memory. thus, we set TASK_SIZE == amount of total memory.
- */
-# define TASK_SIZE	(0x81000000 - 0x80000000)
-
-/*
- * This decides where the kernel will search for a free chunk of vm
- * space during mmap's. We won't be using it
- */
-# define TASK_UNMAPPED_BASE	0
-
-/* definition in include/linux/sched.h */
-struct task_struct;
-
-/* thread_struct is gone. use thread_info instead. */
-struct thread_struct { };
-# define INIT_THREAD	{ }
-
-/* Free all resources held by a thread. */
-static inline void release_thread(struct task_struct *dead_task)
-{
-}
-
-extern unsigned long get_wchan(struct task_struct *p);
-
-# define KSTK_EIP(tsk)	(0)
-# define KSTK_ESP(tsk)	(0)
-
-# else /* CONFIG_MMU */
-
 /*
  * This is used to define STACK_TOP, and with MMU it must be below
  * kernel base to select the correct PGD when handling MMU exceptions.
@@ -133,5 +97,4 @@ extern struct dentry *of_debugfs_root;
 #endif
 
 #  endif /* __ASSEMBLY__ */
-# endif /* CONFIG_MMU */
 #endif /* _ASM_MICROBLAZE_PROCESSOR_H */