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    Subject[PATCH -tip v4 0/4] x86: kprobes: Prohibit kprobes on Xen/KVM emulate prefixes
    Date
    Hi,

    Here is the 4th version of patches to handle Xen/KVM emulate
    prefix by x86 instruction decoder.

    These patches allow x86 instruction decoder to decode
    Xen and KVM emulate prefix correctly, and prohibit kprobes to
    probe on it.
    Previous version is here;

    https://lkml.kernel.org/r/156773433821.31441.2905951246664148487.stgit@devnote2

    In this version, I added 2 patches, [1/4] fixes __ASM_FORM() to
    accept macros using __stringify(), [2/4] introduces new
    asm/emulate_prefix.h to initialize Xen and KVM emulate prefix
    at one place. [3/4] is updated to use new emulate_prefix.h and
    fix to add emulate_prefix.h to sync check list.

    This series can be applied on -tip master branch which
    has merged Josh's objtool/perf sharing common x86 insn
    decoder series.

    Thank you,

    ---

    Masami Hiramatsu (4):
    x86/asm: Allow to pass macros to __ASM_FORM()
    x86: xen: kvm: Gather the definition of emulate prefixes
    x86: xen: insn: Decode Xen and KVM emulate-prefix signature
    x86: kprobes: Prohibit probing on instruction which has emulate prefix


    arch/x86/include/asm/asm.h | 8 ++++--
    arch/x86/include/asm/emulate_prefix.h | 14 +++++++++++
    arch/x86/include/asm/insn.h | 6 +++++
    arch/x86/include/asm/xen/interface.h | 11 +++------
    arch/x86/kernel/kprobes/core.c | 4 +++
    arch/x86/kvm/x86.c | 4 ++-
    arch/x86/lib/insn.c | 34 +++++++++++++++++++++++++++
    tools/arch/x86/include/asm/emulate_prefix.h | 14 +++++++++++
    tools/arch/x86/include/asm/insn.h | 6 +++++
    tools/arch/x86/lib/insn.c | 34 +++++++++++++++++++++++++++
    tools/objtool/sync-check.sh | 3 ++
    tools/perf/check-headers.sh | 3 ++
    12 files changed, 128 insertions(+), 13 deletions(-)
    create mode 100644 arch/x86/include/asm/emulate_prefix.h
    create mode 100644 tools/arch/x86/include/asm/emulate_prefix.h

    --
    Masami Hiramatsu (Linaro) <mhiramat@kernel.org>

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