PMD_TABLE_SIZE
#define H_PUD_BAD_BITS (PMD_TABLE_SIZE-1)
#define PUD_BAD_BITS (PMD_TABLE_SIZE-1)
pmdp = memblock_alloc_or_panic(PMD_TABLE_SIZE, PMD_TABLE_SIZE);
memcpy(pmdp, kasan_early_shadow_pmd, PMD_TABLE_SIZE);
pmdp = early_alloc_pgtable(PMD_TABLE_SIZE);
#ifndef PMD_TABLE_SIZE
pmd = memblock_alloc_or_panic(PMD_TABLE_SIZE, PMD_TABLE_SIZE);