lkml.org 
[lkml]   [2022]   [Apr]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH v2 0/2] arm64: Fix pending single-step debugging issues
    Date
    This patch-set reworks pending fixes from Wei's series [1] to make
    single-step debugging via kgdb/kdb on arm64 work as expected. There was
    a prior discussion on ML [2] regarding if we should keep the interrupts
    enabled during single-stepping. So patch #1 follows suggestion from Will
    [3] to not disable interrupts during single stepping but rather skip
    single stepping within interrupt handler.

    [1] https://lore.kernel.org/all/20200509214159.19680-1-liwei391@huawei.com/
    [2] https://lore.kernel.org/all/CAD=FV=Voyfq3Qz0T3RY+aYWYJ0utdH=P_AweB=13rcV8GDBeyQ@mail.gmail.com/
    [3] https://lore.kernel.org/all/20200626095551.GA9312@willie-the-truck/

    Changes in v2:
    - Replace patch #1 to rather follow Will's suggestion.

    Sumit Garg (2):
    arm64: entry: Skip single stepping interrupt handlers
    arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step

    arch/arm64/include/asm/debug-monitors.h | 1 +
    arch/arm64/kernel/debug-monitors.c | 5 +++++
    arch/arm64/kernel/entry-common.c | 18 +++++++++++++++++-
    arch/arm64/kernel/kgdb.c | 2 ++
    4 files changed, 25 insertions(+), 1 deletion(-)

    --
    2.25.1

    \
     
     \ /
      Last update: 2022-04-13 08:56    [W:3.267 / U:0.060 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site