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charset=us-ascii Content-Disposition: inline In-Reply-To: <70e81ce8-a27a-325f-68d1-836532ed2ba0@huawei.com> X-Rspamd-Queue-Id: 32AC9A0006 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: cdekzimshxzj3z8ff8iucijmzqgmdbmy X-HE-Tag: 1690809508-87767 X-HE-Meta: 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 fzveCffV bQBx93Gul7KJzMytGDtDcQYuS465MKJ1Qj0AQZHZh6h4DpIoVRebqmjSpvLhQDjEle8yxaqxoMxBijs+zGAMqaq9XRGGfCO27Pq1KFNmJelyQt/StKOVQ+Qf5Ke88GTMsVFo+ANW4eWbexuJGE/09Bz+L981uqHsf0PVeI9z3yB88e4AqzDko8WTOgcBCe271Le/Q9qvn6REcPYcEqZFwZ1nnmvlXLY9xA0EDCgg33LZzCtxVkcUnVp3BRRNKmpUyBNdtYZafzAnI1cTvypBf+5LRqGlCNEAIa/CnArIJ76ONId7dZZdcfj7E/DlW95JEbzGbrYNgk7gepyBk1wABxXq+odZDMKIoRI8uSlbwLFsnlpslrPH6C3ax9WqrwhuAfmVqHXVb8p9JqrPw/6oKfsdhDL9NIPq2CWsp X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Jul 31, 2023 at 07:27:14PM +0800, Kefeng Wang wrote: > On 2023/7/31 19:11, Catalin Marinas wrote: > > On Mon, Jul 31, 2023 at 03:48:29PM +0800, Kefeng Wang wrote: > > > +/* > > > + * We cannot use leaf-only invalidation here, since we may be invalidating > > > + * table entries as part of collapsing hugepages or moving page tables. > > > + * Set the tlb_level to 0 because we can not get enough information here. > > > + */ > > > +#define flush_tlb_range(vma, start, end) \ > > > + __flush_tlb_range(vma, start, end, \ > > > + ((vma)->vm_flags & VM_HUGETLB) \ > > > + ? huge_page_size(hstate_vma(vma)) \ > > > + : PAGE_SIZE, false, 0) > > > > This won't work if we use the contiguous PTE to get 64K hugetlb pages on > > a 4K base page configuration. The 16 base pages in the range would have > > to be invalidated individually (the contig PTE bit is just a hint, the > > hardware may or may not take it into account). > > Got it, the contig huge page is depended on hardware implementation, > but for normal hugepage(2M/1G), we could use this, right? Right. Only the pmd/pud cases. -- Catalin