Excerpts from Thomas Bogendoerfer's message of February 4, 2021 8:34 pm: > On Thu, Feb 04, 2021 at 01:29:26PM +1000, Nicholas Piggin wrote: >> Excerpts from Huang Pei's message of February 4, 2021 11:39 am: >> > MIPS page fault path(except huge page) takes 3 exceptions (1 TLB Miss >> > + 2 TLB Invalid), butthe second TLB Invalid exception is just >> > triggered by __update_tlb from do_page_fault writing tlb without >> > _PAGE_VALID set. With this patch, user space mapping prot is made >> > young by default (with both _PAGE_VALID and _PAGE_YOUNG set), >> > and it only take 1 TLB Miss + 1 TLB Invalid exception >> > >> > Remove pte_sw_mkyoung without polluting MM code and make page fault >> > delay of MIPS on par with other architecture >> > >> > Signed-off-by: Huang Pei <huangpei@xxxxxxxxxxx> >> >> Could we merge this? For the core code, > > sure, but IMHO I should only merge the MIPS part, correct ? You could ack it for MIPS and Andrew could take it through his tree would avoid dependencies. Thanks, Nick
