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    Subject[PATCH v7 00/18] x86: Enable FSGSBASE instructions
    Date
    Updates from v6 [6]:
    * Fix ptracer-induced FS/GSBASE write behavior (Andy)
    * Fix GSBASE handling in the NMI path
    * Remove local_irq_save/restore() from switch_to()
    * Separate things into new patches (from 12th to 9th and 10th)
    * Add GSBASE handling in the documentation
    * Add more comments for entry changes
    * Edit changelog (multiple patches)
    (all points by Thomas if not mentioned)

    Previous versions: [1-5]

    [1] Version 1: https://lore.kernel.org/patchwork/cover/934843
    [2] Version 2: https://lore.kernel.org/patchwork/cover/912063
    [3] Version 3: https://lore.kernel.org/patchwork/cover/1002725
    [4] Version 4: https://lore.kernel.org/patchwork/cover/1032799
    [5] Version 5: https://lore.kernel.org/patchwork/cover/1038035
    [6] Version 6: https://lore.kernel.org/patchwork/cover/1051240

    Andi Kleen (3):
    x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions
    x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2
    x86/fsgsbase/64: Add documentation for FSGSBASE

    Andy Lutomirski (4):
    x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE
    x86/fsgsbase/64: Preserve FS/GS state in __switch_to() if FSGSBASE is
    on
    selftests/x86/fsgsbase: Test WRGSBASE
    x86/fsgsbase/64: Enable FSGSBASE by default and add a chicken bit

    Chang S. Bae (11):
    x86/fsgsbase/64: Fix ARCH_SET_FS/GS behaviors for a remote task
    selftests/x86/fsgsbase: Test ptracer-induced GSBASE write
    kbuild: Raise the minimum required binutils version to 2.21
    x86/fsgsbase/64: Enable FSGSBASE instructions in the helper functions
    x86/fsgsbase/64: When copying a thread, use the FSGSBASE instructions
    x86/entry/64: Add the READ_MSR_GSBASE macro
    x86/entry/64: Switch CR3 before SWAPGS on the paranoid entry
    x86/fsgsbase/64: Introduce the FIND_PERCPU_BASE macro
    x86/fsgsbase/64: GSBASE handling with FSGSBASE in the paranoid path
    x86/fsgsbase/64: Document GSBASE handling in the paranoid path
    selftests/x86/fsgsbase: Test ptracer-induced GSBASE write with
    FSGSBASE

    Documentation/admin-guide/kernel-parameters.txt | 2 +
    Documentation/process/changes.rst | 6 +-
    Documentation/x86/entry_64.txt | 17 +++
    Documentation/x86/fsgs.txt | 103 ++++++++++++++
    arch/x86/entry/calling.h | 49 +++++++
    arch/x86/entry/entry_64.S | 142 ++++++++++++++++---
    arch/x86/include/asm/fsgsbase.h | 45 ++++--
    arch/x86/include/asm/inst.h | 15 ++
    arch/x86/include/uapi/asm/hwcap2.h | 3 +
    arch/x86/kernel/cpu/common.c | 22 +++
    arch/x86/kernel/process_64.c | 132 +++++++++++++----
    arch/x86/kernel/ptrace.c | 14 +-
    tools/testing/selftests/x86/fsgsbase.c | 179 +++++++++++++++++++++++-
    13 files changed, 660 insertions(+), 69 deletions(-)
    create mode 100644 Documentation/x86/fsgs.txt

    --
    2.7.4

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