On Thu, 10 Dec 2015 19:21:43 -0800 Andy Lutomirski <[email protected]> wrote:
> The x86 vvar mapping contains pages with differing cacheability > flags. This is currently only supported using (io_)remap_pfn_range, > but those functions can't be used inside page faults. Foggy. What does "support" mean here? > Add vm_insert_pfn_prot to support varying cacheability within the > same non-COW VMA in a more sane manner. Here, "support" presumably means "insertion of pfns". Can we spell all this out more completely please? > x86 needs this to avoid a CRIU-breaking and memory-wasting explosion > of VMAs when supporting userspace access to the HPET. > OtherwiseAck. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
