diff options
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index d0c7f0d..8e61450 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -355,6 +355,7 @@ struct MemoryRegion { bool ram; bool subpage; bool readonly; /* For RAM regions */ + bool nonvolatile; bool rom_device; bool flush_coalesced_mmio; bool global_locking; @@ -480,6 +481,7 @@ static inline FlatView *address_space_to_flatview(AddressSpace *as) * @offset_within_address_space: the address of the first byte of the section * relative to the region's address space * @readonly: writes to this section are ignored + * @nonvolatile: this section is non-volatile */ struct MemoryRegionSection { MemoryRegion *mr; @@ -488,6 +490,7 @@ struct MemoryRegionSection { Int128 size; hwaddr offset_within_address_space; bool readonly; + bool nonvolatile; }; /** @@ -1170,6 +1173,17 @@ static inline bool memory_region_is_rom(MemoryRegion *mr) return mr->ram && mr->readonly; } +/** + * memory_region_is_nonvolatile: check whether a memory region is non-volatile + * + * Returns %true is a memory region is non-volatile memory. + * + * @mr: the memory region being queried + */ +static inline bool memory_region_is_nonvolatile(MemoryRegion *mr) +{ + return mr->nonvolatile; +} /** * memory_region_get_fd: Get a file descriptor backing a RAM memory region. @@ -1342,6 +1356,17 @@ void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, void memory_region_set_readonly(MemoryRegion *mr, bool readonly); /** + * memory_region_set_nonvolatile: Turn a memory region non-volatile + * + * Allows a memory region to be marked as non-volatile. + * only useful on RAM regions. + * + * @mr: the region being updated. + * @nonvolatile: whether rhe region is to be non-volatile. + */ +void memory_region_set_nonvolatile(MemoryRegion *mr, bool nonvolatile); + +/** * memory_region_rom_device_set_romd: enable/disable ROMD mode * * Allows a ROM device (initialized with memory_region_init_rom_device() to |