vregion.h File Reference

Pre-allocated contiguous virtual memory region allocator (lifetime vs interim). More...

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Enumerations
enum	vregion_mem_type { VREGION_MEM_TYPE_INTERIM , VREGION_MEM_TYPE_LIFETIME , VREGION_MEM_TYPE_INVALID }
	Memory allocation modes within a virtual memory region. More...

Functions
struct vregion *	vregion_create (size_t memsize)
	Create a new virtual region instance.
struct vregion *	vregion_create_map (uintptr_t *vreg_start, size_t *vreg_size)
	Create and map a new virtual region instance accessible by user-space domains.
void	vregion_set_interim (struct vregion *vr)
	Switch virtual region allocations to interim mode.
struct vregion *	vregion_get (struct vregion *vr)
	Increment virtual region's user count.
struct vregion *	vregion_put (struct vregion *vr)
	Decrement virtual region's user count or destroy it.
void *	vregion_alloc_align (struct vregion *vr, size_t size, size_t alignment)
	Allocate aligned memory from the specified virtual region.
void *	vregion_alloc_coherent_align (struct vregion *vr, size_t size, size_t alignment)
	Allocate aligned coherent (uncached) memory from the specified virtual region.
static void *	vregion_alloc (struct vregion *vr, size_t size)
	Allocate memory from the specified virtual region.
static void *	vregion_alloc_coherent (struct vregion *vr, size_t size)
	Allocate naturally aligned coherent (uncached) memory from the specified virtual region.
void	vregion_free (struct vregion *vr, void *ptr)
	Free memory allocated from the specified virtual region.
void	vregion_info (struct vregion *vr)
	Log virtual region memory usage.
void	vregion_mem_info (struct vregion *vr, size_t *size, uintptr_t *start)
	Retrieve virtual region memory base address and size.
bool	vregion_verify (struct vregion *vr)
	Validate that a virtual region handle is genuine and isolated from user space.

Detailed Description

Pre-allocated contiguous virtual memory region allocator (lifetime vs interim).