Re: [PATCH 00/23] KAISER: unmap most of the kernel from userspace page tables

[Linus Torvalds]

On Wed, Nov 1, 2017 at 11:46 AM, Dave Hansen
<dave.hansen@xxxxxxxxxxxxxxx> wrote:
>
> The vmalloc()'d stacks definitely need the page table walk.

Ugh, yes. Nasty.

Andy at some point mentioned a per-cpu initial stack trampoline thing
for his exception patches, but I'm not sure he actually ever did that.

Andy?

              Linus