On Thu, Nov 2, 2017 at 12:32 AM, Andy Lutomirski <[email protected]> wrote: > On Wed, Nov 1, 2017 at 1:33 PM, Andy Lutomirski <[email protected]> wrote: >> On Wed, Nov 1, 2017 at 12:05 PM, Linus Torvalds >> <[email protected]> wrote: >>> On Wed, Nov 1, 2017 at 11:46 AM, Dave Hansen >>> <[email protected]> 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? >> >> I'm going to push it to kernel.org very shortly (like twenty minutes >> maybe). Then the 0day bot can chew on it. With the proposed LDT >> rework, we don't need to do any of dynamic mapping stuff, I think. > > FWIW, I pushed all but the actual stack switching part. Something > broke in the rebase and it doesn't boot right now :(
Okay, that was embarrassing. The rebase error was, drumroll please, I forgot one of the patches. Sigh. It's here: https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/log/?h=x86/entry_consolidation The last few patches are terminally ugly. I'll clean them up shortly and email them out. That being said, unless there's a showstopper bug, this should be a fine base for Dave's development.
