Files
linux/mm
Baolin Wang 9c8bbfaca1 mm: hugetlb: add missing cache flushing in hugetlb_unshare_all_pmds()
Missed calling flush_cache_range() before removing the sharing PMD
entrires, otherwise data consistence issue may be occurred on some
architectures whose caches are strict and require a virtual>physical
translation to exist for a virtual address.  Thus add it.

Now no architectures enabling PMD sharing will be affected, since they do
not have a VIVT cache.  That means this issue can not be happened in
practice so far.

Link: https://lkml.kernel.org/r/47441086affcabb6ecbe403173e9283b0d904b38.1650956489.git.baolin.wang@linux.alibaba.com
Link: https://lkml.kernel.org/r/419b0e777c9e6d1454dcd906e0f5b752a736d335.1650781755.git.baolin.wang@linux.alibaba.com
Fixes: 6dfeaff93b ("hugetlb/userfaultfd: unshare all pmds for hugetlbfs when register wp")
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29 14:36:58 -07:00
..
2021-05-05 11:27:24 -07:00
2022-03-24 19:06:45 -07:00
2022-03-22 15:57:01 -07:00
2022-02-14 19:51:47 +01:00
2022-04-28 23:16:13 -07:00
2022-01-15 16:30:28 +02:00
2022-04-28 23:16:16 -07:00
2022-04-28 23:16:14 -07:00
2022-03-24 19:06:44 -07:00
2021-05-07 00:26:35 -07:00
2022-04-01 14:40:42 -04:00
2022-04-28 23:15:58 -07:00
2022-04-28 23:16:00 -07:00
2022-04-28 23:16:16 -07:00
2022-01-15 16:30:31 +02:00