memremap
discv_regn = memremap(pos, adev->mman.discovery_tmr_size, MEMREMAP_WC);
bfr->buffer = memremap(phy_addr, bfr->size, MEMREMAP_WB);
opregion->rvda = memremap(rvda, opregion->asle->rvds,
base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
void *memremap(phys_addr_t, size_t, int);
memremap(mem->bus.offset, mem->size,