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Date: Wed, 1 Nov 2017 12:05:44 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Dave Hansen <dave.hansen@...ux.intel.com> Cc: Andy Lutomirski <luto@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>, Kees Cook <keescook@...gle.com>, Hugh Dickins <hughd@...gle.com> Subject: Re: [PATCH 00/23] KAISER: unmap most of the kernel from userspace page tables On Wed, Nov 1, 2017 at 11:46 AM, Dave Hansen <dave.hansen@...ux.intel.com> 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
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