diff options
Diffstat (limited to 'arch/s390/include/asm/set_memory.h')
| -rw-r--r-- | arch/s390/include/asm/set_memory.h | 76 |
1 files changed, 56 insertions, 20 deletions
diff --git a/arch/s390/include/asm/set_memory.h b/arch/s390/include/asm/set_memory.h index c59a83536c70..94092f4ae764 100644 --- a/arch/s390/include/asm/set_memory.h +++ b/arch/s390/include/asm/set_memory.h @@ -2,31 +2,67 @@ #ifndef _ASMS390_SET_MEMORY_H #define _ASMS390_SET_MEMORY_H -#define SET_MEMORY_RO 1UL -#define SET_MEMORY_RW 2UL -#define SET_MEMORY_NX 4UL -#define SET_MEMORY_X 8UL +#include <linux/mutex.h> -int __set_memory(unsigned long addr, int numpages, unsigned long flags); +extern struct mutex cpa_mutex; -static inline int set_memory_ro(unsigned long addr, int numpages) -{ - return __set_memory(addr, numpages, SET_MEMORY_RO); -} +enum { + _SET_MEMORY_RO_BIT, + _SET_MEMORY_RW_BIT, + _SET_MEMORY_NX_BIT, + _SET_MEMORY_X_BIT, + _SET_MEMORY_4K_BIT, + _SET_MEMORY_INV_BIT, + _SET_MEMORY_DEF_BIT, +}; -static inline int set_memory_rw(unsigned long addr, int numpages) -{ - return __set_memory(addr, numpages, SET_MEMORY_RW); -} +#define SET_MEMORY_RO BIT(_SET_MEMORY_RO_BIT) +#define SET_MEMORY_RW BIT(_SET_MEMORY_RW_BIT) +#define SET_MEMORY_NX BIT(_SET_MEMORY_NX_BIT) +#define SET_MEMORY_X BIT(_SET_MEMORY_X_BIT) +#define SET_MEMORY_4K BIT(_SET_MEMORY_4K_BIT) +#define SET_MEMORY_INV BIT(_SET_MEMORY_INV_BIT) +#define SET_MEMORY_DEF BIT(_SET_MEMORY_DEF_BIT) -static inline int set_memory_nx(unsigned long addr, int numpages) -{ - return __set_memory(addr, numpages, SET_MEMORY_NX); -} +int __set_memory(unsigned long addr, unsigned long numpages, unsigned long flags); -static inline int set_memory_x(unsigned long addr, int numpages) -{ - return __set_memory(addr, numpages, SET_MEMORY_X); +#define set_memory_rox set_memory_rox + +/* + * Generate two variants of each set_memory() function: + * + * set_memory_yy(unsigned long addr, int numpages); + * __set_memory_yy(void *start, void *end); + * + * The second variant exists for both convenience to avoid the usual + * (unsigned long) casts, but unlike the first variant it can also be used + * for areas larger than 8TB, which may happen at memory initialization. + */ +#define __SET_MEMORY_FUNC(fname, flags) \ +static inline int fname(unsigned long addr, int numpages) \ +{ \ + return __set_memory(addr, numpages, (flags)); \ +} \ + \ +static inline int __##fname(void *start, void *end) \ +{ \ + unsigned long numpages; \ + \ + numpages = (end - start) >> PAGE_SHIFT; \ + return __set_memory((unsigned long)start, numpages, (flags)); \ } +__SET_MEMORY_FUNC(set_memory_ro, SET_MEMORY_RO) +__SET_MEMORY_FUNC(set_memory_rw, SET_MEMORY_RW) +__SET_MEMORY_FUNC(set_memory_nx, SET_MEMORY_NX) +__SET_MEMORY_FUNC(set_memory_x, SET_MEMORY_X) +__SET_MEMORY_FUNC(set_memory_rox, SET_MEMORY_RO | SET_MEMORY_X) +__SET_MEMORY_FUNC(set_memory_rwnx, SET_MEMORY_RW | SET_MEMORY_NX) +__SET_MEMORY_FUNC(set_memory_4k, SET_MEMORY_4K) + +int set_direct_map_invalid_noflush(struct page *page); +int set_direct_map_default_noflush(struct page *page); +int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid); +bool kernel_page_present(struct page *page); + #endif |