Messages in this thread | | | Date | Fri, 15 Dec 2023 14:16:54 +0800 | Subject | Re: [PATCH 1/3] mm: HVO: introduce helper function to update and flush pgtable | From | Kefeng Wang <> |
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On 2023/12/14 15:39, Nanyong Sun wrote: > Add pmd/pte update and tlb flush helper function to update page > table. This refactoring patch is designed to facilitate each > architecture to implement its own special logic in preparation > for the arm64 architecture to follow the necessary break-before-make > sequence when updating page tables. > > Signed-off-by: Nanyong Sun <sunnanyong@huawei.com> > --- > mm/hugetlb_vmemmap.c | 55 ++++++++++++++++++++++++++++++++++---------- > 1 file changed, 43 insertions(+), 12 deletions(-) > > diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c > index 87818ee7f01d..49e8b351def3 100644 > --- a/mm/hugetlb_vmemmap.c > +++ b/mm/hugetlb_vmemmap.c > @@ -45,6 +45,37 @@ struct vmemmap_remap_walk { > unsigned long flags; > }; > > +#ifndef vmemmap_update_pmd > +static inline void vmemmap_update_pmd(unsigned long start, > + pmd_t *pmd, pte_t *pgtable)
pgtable -> ptep
> +{ > + pmd_populate_kernel(&init_mm, pmd, pgtable); > +} > +#endif > + > +#ifndef vmemmap_update_pte > +static inline void vmemmap_update_pte(unsigned long addr, > + pte_t *pte, pte_t entry)
pte -> ptep entry -> pte
> +{ > + set_pte_at(&init_mm, addr, pte, entry); > +} > +#endif
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