Re: [PATCH 1/2 v2] kprobe: Do not use uaccess functions to access kernel memory that can fault

[Linus Torvalds]

On Fri, Feb 22, 2019 at 1:38 PM David Miller <davem@xxxxxxxxxxxxx> 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.

But yeah, right now the *common* architectures all distinguish kernel
and user space by pointers (ie x86-64, arm64 and powerpc).

                 Linus