Messages in this thread | | | Subject | Re: [PATCH v4] arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE | From | Muchun Song <> | Date | Wed, 2 Aug 2023 09:40:55 +0800 |
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> On Aug 2, 2023, at 09:27, Kefeng Wang <wangkefeng.wang@huawei.com> wrote: > > It is better to use huge page size instead of PAGE_SIZE > for stride when flush hugepage, which reduces the loop > in __flush_tlb_range(). > > Let's support arch's flush_hugetlb_tlb_range(), which is > used in hugetlb_unshare_all_pmds(), move_hugetlb_page_tables() > and hugetlb_change_protection() for now. > > Note, for hugepages based on contiguous bit, it has to be > invalidated individually since the contiguous PTE bit is > just a hint, the hardware may or may not take it into account. > > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
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