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Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core)

From Linus Torvalds <torvalds@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core)
Date 2016-06-23 21:20 +0200
Message-ID <rNikp-64A-3@gated-at.bofh.it> (permalink)
References (5 earlier) <rNfPz-4cB-13@gated-at.bofh.it> <rNgiC-4ER-19@gated-at.bofh.it> <rNgVj-4UA-21@gated-at.bofh.it> <rNh4Z-55S-7@gated-at.bofh.it> <rNi14-5I7-27@gated-at.bofh.it>
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On Thu, Jun 23, 2016 at 11:53 AM, Peter Zijlstra <peterz@infradead.org> wrote:
>>
>> So the attached patch seems to be the right thing to do regardless of
>> this whole discussion.
>
> Yeah, that looks fine. Want me to take it or will you just commit?

I'm committing these trivial non-semantic patches, I'm actually
running the kernel without any ti->task pointer now (the previous
patch I sent out).

So I'll do the mutex debug patch and the stack dump patch as just he
obvious cleanup patches.

Those are the "purely legacy reasons for a bad calling convention",
and I'm ok with those during the rc series to make it easier for
people to play around with this.

With he goal being that I'm hoping that we can then actually get rid
of this (at least on x86-64, even if we leave it in some other
architectures) in 4.8.

                    Linus

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[PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 02/13] x86/cpa: In populate_pgd, don't set the pgd entry until it's populated Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 03/13] x86/mm: Remove kernel_unmap_pages_in_pgd() and efi_cleanup_page_tables() Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
    Re: [PATCH v3 03/13] x86/mm: Remove kernel_unmap_pages_in_pgd() and  efi_cleanup_page_tables() Matt Fleming <matt@codeblueprint.co.uk> - 2016-06-21 12:20 +0200
  [PATCH v3 11/13] x86/dumpstack/64: Handle faults when printing the "Stack:" part of an OOPS Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 06/13] fork: Add generic vmalloced stack support Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
    Re: [PATCH v3 06/13] fork: Add generic vmalloced stack support Jann Horn <jannh@google.com> - 2016-06-21 12:10 +0200
      Re: [PATCH v3 06/13] fork: Add generic vmalloced stack support Andy Lutomirski <luto@amacapital.net> - 2016-06-21 19:10 +0200
        Re: [PATCH v3 06/13] fork: Add generic vmalloced stack support Kees Cook <keescook@chromium.org> - 2016-06-21 19:20 +0200
          Re: [PATCH v3 06/13] fork: Add generic vmalloced stack support Andy Lutomirski <luto@amacapital.net> - 2016-06-21 19:40 +0200
          Re: [kernel-hardening] Re: [PATCH v3 06/13] fork: Add generic  vmalloced stack support Rik van Riel <riel@redhat.com> - 2016-06-21 20:50 +0200
            Re: [kernel-hardening] Re: [PATCH v3 06/13] fork: Add generic  vmalloced stack support Andy Lutomirski <luto@amacapital.net> - 2016-06-21 21:50 +0200
            Re: [kernel-hardening] Re: [PATCH v3 06/13] fork: Add generic vmalloced stack support Arnd Bergmann <arnd@arndb.de> - 2016-06-21 22:00 +0200
  [PATCH v3 04/13] mm: Track NR_KERNEL_STACK in KiB instead of number of stacks Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
    Re: [PATCH v3 04/13] mm: Track NR_KERNEL_STACK in KiB instead of  number of stacks Michal Hocko <mhocko@kernel.org> - 2016-06-22 10:50 +0200
  [PATCH v3 07/13] x86/die: Don't try to recover from an OOPS on a non-default stack Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 08/13] x86/dumpstack: When OOPSing, rewind the stack before do_exit Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 01/13] x86/mm/hotplug: Don't remove PGD entries in remove_pagetable() Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 10/13] x86/dumpstack: Try harder to get a call trace on stack overflow Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  [PATCH v3 09/13] x86/dumpstack: When dumping stack bytes due to OOPS, start with regs->sp Andy Lutomirski <luto@kernel.org> - 2016-06-21 01:50 +0200
  Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-21 06:10 +0200
    Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-21 18:50 +0200
      Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-21 19:20 +0200
        Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-21 19:40 +0200
          Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Kees Cook <keescook@chromium.org> - 2016-06-21 20:20 +0200
            Re: [kernel-hardening] Re: [PATCH v3 00/13] Virtually mapped stacks  with guard pages (x86, core) Rik van Riel <riel@redhat.com> - 2016-06-21 20:30 +0200
    Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-23 03:30 +0200
      Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 08:10 +0200
        Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Oleg Nesterov <oleg@redhat.com> - 2016-06-23 16:40 +0200
          Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 18:40 +0200
            Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-23 18:50 +0200
              Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Oleg Nesterov <oleg@redhat.com> - 2016-06-23 19:20 +0200
            Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Oleg Nesterov <oleg@redhat.com> - 2016-06-23 19:10 +0200
              Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 19:50 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 20:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Kees Cook <keescook@chromium.org> - 2016-06-23 20:10 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Oleg Nesterov <oleg@redhat.com> - 2016-06-23 20:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 20:50 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-23 21:10 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 21:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 08:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Brian Gerst <brgerst@gmail.com> - 2016-06-24 14:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 19:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 19:50 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-24 19:50 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 20:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-24 20:40 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 20:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 20:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-24 23:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Josh Poimboeuf <jpoimboe@redhat.com> - 2016-06-24 23:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 23:10 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-24 23:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-24 23:40 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-24 23:40 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-25 04:50 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-26 01:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-26 01:40 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-26 03:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Josh Poimboeuf <jpoimboe@redhat.com> - 2016-06-24 23:10 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-23 21:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Oleg Nesterov <oleg@redhat.com> - 2016-06-23 21:00 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Michal Hocko <mhocko@kernel.org> - 2016-06-24 16:20 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Michal Hocko <mhocko@kernel.org> - 2016-06-24 17:10 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages  (x86, core) Oleg Nesterov <oleg@redhat.com> - 2016-06-24 22:30 +0200
                Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Michal Hocko <mhocko@kernel.org> - 2016-06-27 12:40 +0200
          Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:20 +0200
            Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Linus Torvalds <torvalds@linux-foundation.org> - 2016-06-23 21:40 +0200
              Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,  core) Peter Zijlstra <peterz@infradead.org> - 2016-06-23 21:50 +0200
  Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Arnd Bergmann <arnd@arndb.de> - 2016-06-21 11:40 +0200
    Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Kees Cook <keescook@chromium.org> - 2016-06-21 19:30 +0200
      Re: [kernel-hardening] Re: [PATCH v3 00/13] Virtually mapped stacks  with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-21 20:10 +0200
      Re: [kernel-hardening] Re: [PATCH v3 00/13] Virtually mapped stacks  with guard pages (x86, core) Rik van Riel <riel@redhat.com> - 2016-06-21 20:10 +0200
      Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Andy Lutomirski <luto@amacapital.net> - 2016-06-21 21:50 +0200
        Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Kees Cook <keescook@chromium.org> - 2016-06-21 22:20 +0200
      Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core) Arnd Bergmann <arnd@arndb.de> - 2016-06-21 21:50 +0200

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