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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASMS390_SET_MEMORY_H
#define _ASMS390_SET_MEMORY_H
#include <linux/mutex.h>
extern struct mutex cpa_mutex;
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,
};
#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)
int __set_memory(unsigned long addr, unsigned long numpages, unsigned long flags);
#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);
bool kernel_page_present(struct page *page);
#endif