> Currently, Linux is able to setup mappings in kernel space to cover > any combination of settings. However, userspace is much more limited > because we don't carry the additional bits around in the Linux version > of the PTE - and as such shared mmaps on some systems can end up locking > the CPU. > > A few attempts have been made at solving these without using the > additional PTE bits, but they've been less that robust. Do these new ARM implementations use more bits than most archs? Most ARM implementations can spare a PTE bit for this, right? Is the use of these 3 extra bits to cover a few buggy processors or is this caused by consolidating the needs of widely differing architectures? I just can't get over the idea that you _have_ use up all available bits. Oh well. - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
