yeap, your patch is general and better than mine, it can solve the issue. please drop my patch. regards bibo, mao On 03/09/2022 12:14 PM, Nadav Amit wrote: > > >> On Mar 8, 2022, at 6:57 PM, Bibo Mao <maobibo@xxxxxxxxxxx> wrote: >> >> numa worker will periodically change vma prot with PROT_NONE, by >> default it will scan 256M vma memory size with pmd stepping size. >> If there are fewer pages changed with PROT_NONE, tlb flush is called >> with pmd size. This patch will calculate flush range for those >> pages with pte prot changed, it will reduce size for tlb flush. >> >> Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx> > > Hi Bibo, > > I finally managed to make v3 of a patchiest, which I think does > something similar to what you are looking for (without introducing > yet another TLB batching mechanism). > > Have a look at [1] and let me know if that would satisfy you. > > > [1] https://lore.kernel.org/linux-mm/20220309041043.302261-4-namit@xxxxxxxxxx/T/#u >
