> You can look at https://lkml.org/lkml/2012/1/9/389 in zsmalloc-main.c, > zs_[un]map_object() functions for the currently uses of set_pte() and > __flush_tlb_one(). > > > set_pte() is long gone on all archs really (or if it's still there it's > > not meant to be used as is), use set_pte_at(). > > Problem with set_pte_at() for us is that we don't have an mm_struct to pass > because the mapping is not for a userspace process but for the kernel itself.
Then use init_mm > However, I do think this is the portable function we need to be using. Just > need to figure out what to pass in for the mm_struct param. > > > __flush_tlb_one() doesn't mean anything as an arch independent > > functionality. We have a local_flush_tlb_page() that -might- do what you > > want but why in hell is that patch not using proper existing > > interfaces ? > > flush_tlb_page() is the portable function we should be using. However, > again, it requires a vma_area_struct. I'm not sure what we should be > passing there. Do you need this to be CPU local flush or global ? In the later, flush_tlb_kernel_range() is the right API. If you want per-cpu, we'll have to add a new arch hook. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
