On Fri, Feb 22, 2019 at 01:59:10PM -0800, Linus Torvalds wrote: > On Fri, Feb 22, 2019 at 1:38 PM David Miller <da...@davemloft.net> wrote: > > > > Don't be surprised if we see more separation like this in the future too. > > Yes, with the whole meltdown fiasco, there's actually more pressure to > add more support for separation of kernel/user address spaces. As Andy > pointed out, it's been discussed as a future wish-list for x86-64 too.
S/390 is another example. I've also proposed a RISC-V extension for it, including prototypes for Rocketchip and Qemu, and a Linux kernel support, but it didn't go any way.
