linux-kernel - [patch 0/4] x86/kaiser: Boot time disabling and debug support

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Date:   Sun, 26 Nov 2017 18:55:38 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...hat.com>, daniel.gruss@...k.tugraz.at,
        hughd@...gle.com, keescook@...gle.com, linux-mm@...ck.org,
        michael.schwarz@...k.tugraz.at, moritz.lipp@...k.tugraz.at,
        richard.fellner@...dent.tugraz.at
Subject: [patch 0/4] x86/kaiser: Boot time disabling and debug support

This patch series applies on top of

     git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/mm

It contains the following updates:

  - Get rid of the compile time PAGE_GLOBAL disabling

  - Add debug support for WX mappings in the KAISER shadow table

  - Provide debug files to dump the kernel and the user page table for the
    current task.

  - Add a boot time switch to disable KAISER. This does not yet take care of
    the 8k PGD allocations, but that can be done on top.

Thanks,

	tglx

---
 arch/x86/entry/calling.h             |    7 +++
 arch/x86/include/asm/kaiser.h        |    8 +++
 arch/x86/include/asm/pgtable.h       |    1 
 arch/x86/include/asm/pgtable_64.h    |    6 ++
 arch/x86/include/asm/pgtable_types.h |   16 ------
 arch/x86/mm/debug_pagetables.c       |   81 ++++++++++++++++++++++++++++++++---
 arch/x86/mm/dump_pagetables.c        |   27 +++++++++--
 arch/x86/mm/init.c                   |   14 ++++--
 arch/x86/mm/kaiser.c                 |   30 ++++++++++++
 arch/x86/mm/pageattr.c               |   16 +++---
 security/Kconfig                     |    2 
 11 files changed, 170 insertions(+), 38 deletions(-)