Messages in this thread Patch in this message | | | From | HORIGUCHI NAOYA(堀口 直也) <> | Subject | Re: [PATCH v3 2/2] hw/poison: Add in-use hugepage hwpoison filter judgement | Date | Mon, 21 Feb 2022 01:32:30 +0000 |
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# please update "hw/poison" as well.
On Fri, Feb 18, 2022 at 04:42:42AM -0500, luofei wrote: > After successfully obtaining the reference count of the huge > page, it is still necessary to call hwpoison_filter() to make a > filter judgement, otherwise the filter hugepage will be unmaped > and the related process may be killed. > > Signed-off-by: luofei <luofei@unicloud.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
> --- > mm/memory-failure.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/mm/memory-failure.c b/mm/memory-failure.c > index 59d6d939a752..17a7b0a94ab9 100644 > --- a/mm/memory-failure.c > +++ b/mm/memory-failure.c > @@ -1548,6 +1548,17 @@ static int memory_failure_hugetlb(unsigned long pfn, int flags) > lock_page(head); > page_flags = head->flags; > > + if (hwpoison_filter(p)) { > + if (TestClearPageHWPoison(head)) > + num_poisoned_pages_dec(); > + put_page(p); > + if (flags & MF_MCE_HANDLE) > + res = -EHWPOISON; > + else > + res = 0; > + goto out; > + } > + > /* > * TODO: hwpoison for pud-sized hugetlb doesn't work right now, so > * simply disable it. In order to make it work properly, we need > -- > 2.27.0 | |