diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/memory.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index c3d417d317..9446874d21 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -190,6 +190,9 @@ typedef struct IOMMUTLBEvent { */ #define RAM_NORESERVE (1 << 7) +/* RAM that isn't accessible through normal means. */ +#define RAM_PROTECTED (1 << 8) + static inline void iommu_notifier_init(IOMMUNotifier *n, IOMMUNotify fn, IOMMUNotifierFlag flags, hwaddr start, hwaddr end, @@ -1267,7 +1270,7 @@ void memory_region_init_ram_from_file(MemoryRegion *mr, * @name: the name of the region. * @size: size of the region. * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM, - * RAM_NORESERVE. + * RAM_NORESERVE, RAM_PROTECTED. * @fd: the fd to mmap. * @offset: offset within the file referenced by fd * @errp: pointer to Error*, to store an error if it happens. @@ -1569,6 +1572,16 @@ static inline bool memory_region_is_romd(MemoryRegion *mr) } /** + * memory_region_is_protected: check whether a memory region is protected + * + * Returns %true if a memory region is protected RAM and cannot be accessed + * via standard mechanisms, e.g. DMA. + * + * @mr: the memory region being queried + */ +bool memory_region_is_protected(MemoryRegion *mr); + +/** * memory_region_get_iommu: check whether a memory region is an iommu * * Returns pointer to IOMMUMemoryRegion if a memory region is an iommu, |