PCI_DUMP_SIZE
BUILD_BUG_ON(PCI_DUMP_SIZE > 4096 || PCI_DUMP_SIZE & 0x3);
alloc_size = max_t(u32, alloc_size, PCI_DUMP_SIZE + PREFIX_LEN);
for (i = 0, ptr = buf; i < PCI_DUMP_SIZE; i += 4, ptr++)