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 ? Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
