Module vhost_user_backend::bitmap

Structs

• AtomicBitmapMmap
  AtomicBitmapMmap implements a simple memory-mapped bitmap on the page level with test and set operations. The main use case is to support live migration on vhost-user backends (see VHOST_USER_PROTOCOL_F_LOG_SHMFD and VHOST_USER_SET_LOG_BASE in the vhost-user protocol specification). It uses a fixed memory page size of LOG_PAGE_SIZE bytes, so it converts addresses to page numbers before setting or clearing the bits.
• BitmapMmapRegion
  BitmapMmapRegion implements a bitmap tha can be replaced at runtime. The main use case is to support live migration on vhost-user backends (see VHOST_USER_PROTOCOL_F_LOG_SHMFD and VHOST_USER_SET_LOG_BASE in the vhost-user protocol specification). It uses a fixed memory page size of VHOST_LOG_PAGE bytes (i.e., 4096 bytes), so it converts addresses to page numbers before setting or clearing the bits.
• MmapLogReg
  MmaplogReg mmaps the frontend bitmap backing memory in the current process.

Traits

• BitmapReplace
  A Bitmap with an internal Bitmap that can be replaced at runtime
• MemRegionBitmap
  A bitmap relative to a memory region