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    SubjectRe: [PATCH v4 26/36] um: Implement the new page table range API
    On Wed, Mar 15, 2023 at 05:14:34AM +0000, Matthew Wilcox (Oracle) wrote:
    > Add PFN_PTE_SHIFT and update_mmu_cache_range().
    >
    > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
    > Cc: Richard Weinberger <richard@nod.at>
    > Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
    > Cc: Johannes Berg <johannes@sipsolutions.net>
    > Cc: linux-um@lists.infradead.org

    Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>

    > ---
    > arch/um/include/asm/pgtable.h | 7 ++-----
    > 1 file changed, 2 insertions(+), 5 deletions(-)
    >
    > diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
    > index a70d1618eb35..ea5f8122f128 100644
    > --- a/arch/um/include/asm/pgtable.h
    > +++ b/arch/um/include/asm/pgtable.h
    > @@ -242,11 +242,7 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval)
    > if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr);
    > }
    >
    > -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
    > - pte_t *pteptr, pte_t pteval)
    > -{
    > - set_pte(pteptr, pteval);
    > -}
    > +#define PFN_PTE_SHIFT PAGE_SHIFT
    >
    > #define __HAVE_ARCH_PTE_SAME
    > static inline int pte_same(pte_t pte_a, pte_t pte_b)
    > @@ -290,6 +286,7 @@ struct mm_struct;
    > extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
    >
    > #define update_mmu_cache(vma,address,ptep) do {} while (0)
    > +#define update_mmu_cache_range(vma, address, ptep, nr) do {} while (0)
    >
    > /*
    > * Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that
    > --
    > 2.39.2
    >
    >

    --
    Sincerely yours,
    Mike.

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