L1D_CACHE_ORDER
page = alloc_pages(GFP_KERNEL, L1D_CACHE_ORDER);
for (i = 0; i < 1u << L1D_CACHE_ORDER; ++i) {
free_pages((unsigned long)vmx_l1d_flush_pages, L1D_CACHE_ORDER);
int size = PAGE_SIZE << L1D_CACHE_ORDER;