diff options
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 549ae734e6..3d778d70f0 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -31,6 +31,7 @@ #include "qemu/queue.h" #include "qemu/int128.h" #include "qemu/notify.h" +#include "qapi/error.h" #define MAX_PHYS_ADDR_SPACE_BITS 62 #define MAX_PHYS_ADDR (((hwaddr)1 << MAX_PHYS_ADDR_SPACE_BITS) - 1) @@ -311,6 +312,28 @@ void memory_region_init_ram(MemoryRegion *mr, const char *name, uint64_t size); +#ifdef __linux__ +/** + * memory_region_init_ram_from_file: Initialize RAM memory region with a + * mmap-ed backend. + * + * @mr: the #MemoryRegion to be initialized. + * @owner: the object that tracks the region's reference count + * @name: the name of the region. + * @size: size of the region. + * @share: %true if memory must be mmaped with the MAP_SHARED flag + * @path: the path in which to allocate the RAM. + * @errp: pointer to Error*, to store an error if it happens. + */ +void memory_region_init_ram_from_file(MemoryRegion *mr, + struct Object *owner, + const char *name, + uint64_t size, + bool share, + const char *path, + Error **errp); +#endif + /** * memory_region_init_ram_ptr: Initialize RAM memory region from a * user-provided pointer. Accesses into the @@ -513,6 +536,16 @@ bool memory_region_is_logging(MemoryRegion *mr); bool memory_region_is_rom(MemoryRegion *mr); /** + * memory_region_get_fd: Get a file descriptor backing a RAM memory region. + * + * Returns a file descriptor backing a file-based RAM memory region, + * or -1 if the region is not a file-based RAM memory region. + * + * @mr: the RAM or alias memory region being queried. + */ +int memory_region_get_fd(MemoryRegion *mr); + +/** * memory_region_get_ram_ptr: Get a pointer into a RAM memory region. * * Returns a host pointer to a RAM memory region (created with @@ -848,6 +881,14 @@ void memory_region_set_alias_offset(MemoryRegion *mr, bool memory_region_present(MemoryRegion *container, hwaddr addr); /** + * memory_region_is_mapped: returns true if #MemoryRegion is mapped + * into any address space. + * + * @mr: a #MemoryRegion which should be checked if it's mapped + */ +bool memory_region_is_mapped(MemoryRegion *mr); + +/** * memory_region_find: translate an address/size relative to a * MemoryRegion into a #MemoryRegionSection. * |