typedef struct {
unsigned long long present:1;
unsigned long long writable:1;
unsigned long long user:1;
unsigned long long write_through:1;
unsigned long long cache_disable:1;
unsigned long long accessed:1;
unsigned long long dirty:1;
unsigned long long huge_page:1;
unsigned long long global:1;
unsigned long long unused1:3;
unsigned long long phys_addr:52;
unsigned long long unused2:11;
unsigned long long no_execute:1;
} pte_t;
下面是对PTE结构原型的详细解释: