From: Ma Wupeng <mawupeng1@huawei.com> hulk inclusion category: feature bugzilla: https://atomgit.com/openeuler/kernel/issues/9826 -------------------------------- Set flag VM_PBHA_BIT0 for global init task during #PF. Signed-off-by: Ma Wupeng <mawupeng1@huawei.com> Signed-off-by: Fanhua Li <lifanhua5@huawei.com> Signed-off-by: Jiacheng Yu <yujiacheng3@huawei.com> --- include/linux/pbha.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/pbha.h b/include/linux/pbha.h index 9d004c833745..ebf2ef3efef4 100644 --- a/include/linux/pbha.h +++ b/include/linux/pbha.h @@ -43,6 +43,10 @@ static inline pte_t maybe_mk_pbha_bit0(pte_t pte, struct vm_area_struct *vma) if (!system_support_pbha_bit0()) return pte; + if (unlikely(is_global_init(current)) && + !(vma->vm_flags & VM_PBHA_BIT0)) + ACCESS_PRIVATE(vma, __vm_flags) |= VM_PBHA_BIT0; + if (vma->vm_flags & VM_PBHA_BIT0) pte = pte_mkpbha(pte, PBHA_VAL_BIT0); -- 2.43.0