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    SubjectRe: [RFC][PATCH 0/3] signal: Move si_trapno into the _si_fault union

    Well with 7 patches instead of 3 that was a little more than I thought
    I was going to send.

    However that does demonstrate what I am thinking, and I think most of
    the changes are reasonable at this point.

    I am very curious how synchronous this all is, because if this code
    is truly synchronous updating signalfd to handle this class of signal
    doesn't really make sense.

    If the code is not synchronous using force_sig is questionable.

    Eric W. Biederman (7):
    siginfo: Move si_trapno inside the union inside _si_fault
    signal: Implement SIL_FAULT_TRAPNO
    signal: Use dedicated helpers to send signals with si_trapno set
    signal: Remove __ARCH_SI_TRAPNO
    signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency
    signal: Factor force_sig_perf out of perf_sigtrap
    signal: Deliver all of the perf_data in si_perf

    arch/alpha/include/uapi/asm/siginfo.h | 2 -
    arch/alpha/kernel/osf_sys.c | 2 +-
    arch/alpha/kernel/signal.c | 4 +-
    arch/alpha/kernel/traps.c | 24 ++++----
    arch/alpha/mm/fault.c | 4 +-
    arch/mips/include/uapi/asm/siginfo.h | 2 -
    arch/sparc/include/uapi/asm/siginfo.h | 3 -
    arch/sparc/kernel/process_64.c | 2 +-
    arch/sparc/kernel/sys_sparc_32.c | 2 +-
    arch/sparc/kernel/sys_sparc_64.c | 2 +-
    arch/sparc/kernel/traps_32.c | 22 +++----
    arch/sparc/kernel/traps_64.c | 44 ++++++--------
    arch/sparc/kernel/unaligned_32.c | 2 +-
    arch/sparc/mm/fault_32.c | 2 +-
    arch/sparc/mm/fault_64.c | 2 +-
    fs/signalfd.c | 13 ++--
    include/linux/compat.h | 9 +--
    include/linux/sched/signal.h | 13 ++--
    include/linux/signal.h | 3 +-
    include/uapi/asm-generic/siginfo.h | 11 ++--
    include/uapi/linux/signalfd.h | 4 +-
    kernel/events/core.c | 11 +---
    kernel/signal.c | 108 ++++++++++++++++++++++------------
    23 files changed, 149 insertions(+), 142 deletions(-)

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