PG_hwpoison
u |= kpf_copy_bit(k, KPF_HWPOISON, PG_hwpoison);
u |= kpf_copy_bit(ps.page_snapshot.flags.f, KPF_HWPOISON, PG_hwpoison);
#define __PG_HWPOISON (1UL << PG_hwpoison)
VMCOREINFO_NUMBER(PG_hwpoison);