Lines Matching +full:reserved +full:- +full:memory

4  * SPDX-License-Identifier: Apache-2.0
14  * @defgroup kernel_mm_internal_apis Kernel Memory Management Internal APIs
41 #define K_MEM_VIRT_OFFSET	((CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_OFFSET) - \
56 #define K_MEM_PHYS_ADDR(virt)	((virt) - K_MEM_VIRT_OFFSET)
71  * @brief Kernel is mapped in virtual memory if defined.
75 #error "XIP and a virtual memory kernel are not allowed"
117 	/* Should be identity-mapped */  in k_mem_phys_addr()
181  * Map a physical memory region into the kernel's virtual address space
183  * This function is intended for mapping memory-mapped I/O regions into
188  * The memory mapped via this function must be unmapped using
191  * This function alters the active page tables in the area reserved
199  * Unused bits in 'flags' are reserved for future expansion.
200  * A caching mode must be selected. By default, the region is read-only
210  * frames. It may conflict with anonymous memory mappings and demand paging
212  * exactly what you are doing. If you need a chunk of memory, use k_mem_map().
213  * If you need a contiguous buffer of physical memory, statically declare it
220  * @param[in]  phys Physical address base of the memory region
221  * @param[in]  size Size of the memory region
228  * Unmap a virtual memory region from kernel's virtual address space.
231  * where temporary memory mappings need to be made. This allows these
232  * memory mappings to be discarded once they are no longer needed.
234  * This function alters the active page tables in the area reserved
243  * It is highly discouraged to use this function to unmap memory mappings.
244  * It may conflict with anonymous memory mappings and demand paging and
257  * Map memory into virtual address space with guard pages.
259  * This maps memory into virtual address space with a preceding and
260  * a succeeding guard pages. The memory mapped via this function must be
263  * This function maps a contiguous physical memory region into kernel's
269  * This function alters the active page tables in the area reserved
275  * with memory domain APIs after the mapping has been established. Setting
276  * K_MEM_PERM_USER here will allow all user threads to access this memory
279  * Unless K_MEM_MAP_UNINIT is used, the returned memory will be zeroed.
281  * The returned virtual memory pointer will be page-aligned. The size
282  * parameter, and any base address for re-mapping purposes must be page-
294  * @param phys Physical address base of the memory region if not requesting
295  *             anonymous memory. Must be page-aligned.
296  * @param size Size of the memory mapping. This must be page-aligned.
298  * @param is_anon True is requesting mapping with anonymous memory.
300  * @return The mapped memory location, or NULL if insufficient virtual address
301  *         space, insufficient physical memory to establish the mapping,
302  *         or insufficient memory for paging structures.
307  * Un-map memory mapped via k_mem_map_phys_guard().
309  * This removes the memory mappings for the provided page-aligned region,
312  * This function alters the active page tables in the area reserved
320  * @param addr Page-aligned memory region base virtual address
321  * @param size Page-aligned memory region size
322  * @param is_anon True if the mapped memory is from anonymous memory.