BOUNCE_MAP_SIZE
paddr += BOUNCE_MAP_SIZE;
iova += BOUNCE_MAP_SIZE;
iova += BOUNCE_MAP_SIZE;
sz = min_t(size_t, BOUNCE_MAP_SIZE - offset, size);
int inner_pages = PAGE_SIZE / BOUNCE_MAP_SIZE;
int inner_pages = PAGE_SIZE / BOUNCE_MAP_SIZE;
BOUNCE_MAP_SIZE, IOVA_START_PFN);
#define BOUNCE_MAP_MASK (~(BOUNCE_MAP_SIZE - 1))
#define BOUNCE_MAP_ALIGN(addr) (((addr) + BOUNCE_MAP_SIZE - 1) & ~(BOUNCE_MAP_SIZE - 1))