linux-kernel - [PATCH 0/6] x86: infrastructure to enable FSGSBASE

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Date:   Mon,  4 Jun 2018 12:24:23 -0700
From:   "Chang S. Bae" <chang.seok.bae@...el.com>
To:     Andy Lutomirski <luto@...nel.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Markus T Metzger <markus.t.metzger@...el.com>,
        "Ravi V . Shankar" <ravi.v.shankar@...el.com>,
        "Chang S . Bae" <chang.seok.bae@...el.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/6] x86: infrastructure to enable FSGSBASE

Given feedbacks from [1], it was asked to make first a few
patches ready as soon as possible. To make FSGSBASE facilitated,
some helper functions and refactoring work are incorporated.
Besides that, it includes Andy's fix for accurate FS/GS base read
and cleanup for the vDSO initialization.

[1] FSGSBASE patch set V2: https://lkml.org/lkml/2018/5/31/686

Andy Lutomirski (1):
  x86/fsgsbase/64: Make ptrace read FS/GS base accurately

Chang S. Bae (5):
  x86/fsgsbase/64: Introduce FS/GS base helper functions
  x86/fsgsbase/64: Use FS/GS base helpers in core dump
  x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to
  x86/msr: write_rdtscp_aux() to use wrmsr_safe()
  x86/vdso: Move out the CPU number store

 arch/x86/entry/vdso/vgetcpu.c   |   4 +-
 arch/x86/entry/vdso/vma.c       |  38 +--------
 arch/x86/include/asm/elf.h      |   6 +-
 arch/x86/include/asm/fsgsbase.h |  47 +++++++++++
 arch/x86/include/asm/msr.h      |   2 +-
 arch/x86/include/asm/segment.h  |  29 ++++++-
 arch/x86/include/asm/vgtod.h    |   2 -
 arch/x86/kernel/cpu/common.c    |   5 ++
 arch/x86/kernel/process_64.c    | 181 +++++++++++++++++++++++++++++++---------
 arch/x86/kernel/ptrace.c        |  28 ++-----
 arch/x86/kernel/setup_percpu.c  |  17 +++-
 11 files changed, 250 insertions(+), 109 deletions(-)
 create mode 100644 arch/x86/include/asm/fsgsbase.h

-- 
2.7.4