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riscv: remove CONFIG_MMU ifdefs

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The RISC-V port doesn't suport a nommu mode, so there is no reason
to provide some code only under a CONFIG_MMU ifdef.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Christoph Hellwig 2018-01-04 18:35:02 +01:00 committed by Palmer Dabbelt
parent 9e49a4ed07
commit c163fb38ca
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GPG Key ID: EF4CA1502CCBAB41
4 changed files with 0 additions and 24 deletions
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4
arch/riscv/include/asm/io.h
View File

@ -21,8 +21,6 @@
#include <linux/types.h>
#ifdef CONFIG_MMU
extern void __iomem *ioremap(phys_addr_t offset, unsigned long size);
/*
@ -36,8 +34,6 @@ extern void __iomem *ioremap(phys_addr_t offset, unsigned long size);
extern void iounmap(volatile void __iomem *addr);
#endif /* CONFIG_MMU */
/* Generic IO read/write. These perform native-endian accesses. */
#define __raw_writeb __raw_writeb
static inline void __raw_writeb(u8 val, volatile void __iomem *addr)

4
arch/riscv/include/asm/pgtable.h
View File

@ -20,8 +20,6 @@
#ifndef __ASSEMBLY__
#ifdef CONFIG_MMU
/* Page Upper Directory not used in RISC-V */
#include <asm-generic/pgtable-nopud.h>
#include <asm/page.h>
@ -413,8 +411,6 @@ static inline void pgtable_cache_init(void)
/* No page table caches to initialize */
}
#endif /* CONFIG_MMU */
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
#define VMALLOC_END (PAGE_OFFSET - 1)
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)

4
arch/riscv/include/asm/tlbflush.h
View File

@ -15,8 +15,6 @@
#ifndef _ASM_RISCV_TLBFLUSH_H
#define _ASM_RISCV_TLBFLUSH_H
#ifdef CONFIG_MMU
#include <linux/mm_types.h>
/*
@ -64,6 +62,4 @@ static inline void flush_tlb_kernel_range(unsigned long start,
flush_tlb_all();
}
#endif /* CONFIG_MMU */
#endif /* _ASM_RISCV_TLBFLUSH_H */

12
arch/riscv/include/asm/uaccess.h
View File

@ -127,7 +127,6 @@ extern int fixup_exception(struct pt_regs *state);
* call.
*/
#ifdef CONFIG_MMU
#define __get_user_asm(insn, x, ptr, err) \
do { \
uintptr_t __tmp; \
@ -153,13 +152,11 @@ do { \
__disable_user_access(); \
(x) = __x; \
} while (0)
#endif /* CONFIG_MMU */
#ifdef CONFIG_64BIT
#define __get_user_8(x, ptr, err) \
__get_user_asm("ld", x, ptr, err)
#else /* !CONFIG_64BIT */
#ifdef CONFIG_MMU
#define __get_user_8(x, ptr, err) \
do { \
u32 __user *__ptr = (u32 __user *)(ptr); \
@ -193,7 +190,6 @@ do { \
(x) = (__typeof__(x))((__typeof__((x)-(x)))( \
(((u64)__hi << 32) | __lo))); \
} while (0)
#endif /* CONFIG_MMU */
#endif /* CONFIG_64BIT */
@ -267,8 +263,6 @@ do { \
((x) = 0, -EFAULT); \
})
#ifdef CONFIG_MMU
#define __put_user_asm(insn, x, ptr, err) \
do { \
uintptr_t __tmp; \
@ -292,14 +286,11 @@ do { \
: "rJ" (__x), "i" (-EFAULT)); \
__disable_user_access(); \
} while (0)
#endif /* CONFIG_MMU */
#ifdef CONFIG_64BIT
#define __put_user_8(x, ptr, err) \
__put_user_asm("sd", x, ptr, err)
#else /* !CONFIG_64BIT */
#ifdef CONFIG_MMU
#define __put_user_8(x, ptr, err) \
do { \
u32 __user *__ptr = (u32 __user *)(ptr); \
@ -329,7 +320,6 @@ do { \
: "rJ" (__x), "rJ" (__x >> 32), "i" (-EFAULT)); \
__disable_user_access(); \
} while (0)
#endif /* CONFIG_MMU */
#endif /* CONFIG_64BIT */
@ -438,7 +428,6 @@ unsigned long __must_check clear_user(void __user *to, unsigned long n)
* will set "err" to -EFAULT, while successful accesses return the previous
* value.
*/
#ifdef CONFIG_MMU
#define __cmpxchg_user(ptr, old, new, err, size, lrb, scb) \
({ \
__typeof__(ptr) __ptr = (ptr); \
@ -508,6 +497,5 @@ unsigned long __must_check clear_user(void __user *to, unsigned long n)
(err) = __err; \
__ret; \
})
#endif /* CONFIG_MMU */
#endif /* _ASM_RISCV_UACCESS_H */