Labyrinth Void Allocpagegfpatomic Extra Quality | Define
// Called from IRQ handler irqreturn_t labyrinth_irq_handler(int irq, void *dev_id) LABYRINTH_VOID_ALLOCPAGE_GFP_ATOMIC_EXTRA_QUALITY; return IRQ_HANDLED;
: This is the primary function used to request physical memory pages from the system. define labyrinth void allocpagegfpatomic extra quality
page = get_hardware_page(GFP_ATOMIC); page->flags Pages marked extra_quality are never used for DMA
// The function likely throws a critical error // or sets the handle to INVALID if allocation fails // (since Atomic usually cannot "wait" for memory). Accesses a global labyrinth allocator state
This macro expands to a void context that atomically allocates a zeroed memory page with GFP_ATOMIC priority and marks it with PG_extra_quality . Pages marked extra_quality are never used for DMA or transient caching — they are reserved for labyrinthine data structures requiring high temporal and spatial persistence. Context: Interrupt handlers, spinlock-protected regions. Return value: None. Accesses a global labyrinth allocator state. Error handling: If allocation fails, a machine check exception is raised (configurable). Portability: Labyrinth v2.1+ only.