From: guomengqi <guomengqi3@huawei.com> ascend inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI CVE: NA ------------------------------------------------- Modified hugetlb_insert_hugepage_pte_by_pa to assure k2u hugepages can be set as READONLY. Signed-off-by: guomengqi <guomengqi3@huawei.com> Reviewed-by: Ding Tianhong <dingtianhong@huawei.com> Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com> Reviewed-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- mm/hugetlb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 89404e28b2514..5190154de3b09 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -5374,7 +5374,8 @@ int hugetlb_insert_hugepage_pte_by_pa(struct mm_struct *mm, entry = pfn_pte(phy_addr >> PAGE_SHIFT, prot); entry = huge_pte_mkdirty(entry); - entry = huge_pte_mkwrite(entry); + if (!(pgprot_val(prot) & PTE_RDONLY)) + entry = huge_pte_mkwrite(entry); entry = pte_mkyoung(entry); entry = pte_mkhuge(entry); entry = pte_mkspecial(entry); -- 2.25.1