[lkml]   [2010]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [patch] x86: ptrace and core-dump extensions for xstate
    > #define PTRACE_GETREGS(r) (((r) << 16) | PTRACE_GETREGS_CMD)
    > ... or something like that?

    (You can't use that exact name, it's taken.) IMHO this is some spurious
    obfuscation that is not warranted by saving the two get_user calls in the
    kernel. (OTOH, my suggestion requires a whole extra 5 lines of code or so
    in compat_sys_ptrace because the indirection in the ABI is sensitive to
    userland word size.) But I don't feel strongly about the particulars of
    the ptrace API addition, just that it be generic to cover any regset and
    not be prone to implicit buffer-size miscommunications. I'll leave it to
    whatever Oleg wants to implement.


     \ /
      Last update: 2010-02-05 22:19    [W:0.023 / U:1.912 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site