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    Subject[PATCH v7 3.2-rc2 15/30] x86: Define x86_64 specific uprobe_task_arch_info structure

    On x86_64, need to handle RIP relative instructions, which requires us to
    save and restore a register.

    Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
    Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    ---
    arch/x86/include/asm/uprobes.h | 5 +++++
    1 files changed, 5 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/include/asm/uprobes.h b/arch/x86/include/asm/uprobes.h
    index 19a5949..cf794bf 100644
    --- a/arch/x86/include/asm/uprobes.h
    +++ b/arch/x86/include/asm/uprobes.h
    @@ -36,8 +36,13 @@ typedef u8 uprobe_opcode_t;
    struct uprobe_arch_info {
    unsigned long rip_rela_target_address;
    };
    +
    +struct uprobe_task_arch_info {
    + unsigned long saved_scratch_register;
    +};
    #else
    struct uprobe_arch_info {};
    +struct uprobe_task_arch_info {};
    #endif
    struct uprobe;
    extern int analyze_insn(struct mm_struct *mm, struct uprobe *uprobe);


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