Re: [PATCH v4 0/6] LoongArch: Fix perf hardware breakpoints

[Huacai Chen]

Applied, thanks.


Huacai

On Thu, Sep 24, 2026 at 10:27 PM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
>
> v4:
>   -- Do not modify thread_struct layout for hardware breakpoints
>
> This series addresses severe functional degradations in standard
> perf_event usage, including initialization failures and one-shot
> triggering limitations.
>
> Tiezhu Yang (6):
>   LoongArch: Fix bitmask corruption in update_bp_registers()
>   LoongArch: Remove redundant call in update_bp_registers()
>   LoongArch: Fix architectural naming typo for CSR_FWPS_SKIP
>   LoongArch: Only send SIGTRAP signal if necessary in do_watch()
>   LoongArch: Fix perf hardware breakpoint failure via installation
>   LoongArch: Fix one-shot limitation for perf hardware breakpoints
>
>  arch/loongarch/include/asm/hw_breakpoint.h |  8 +--
>  arch/loongarch/include/asm/loongarch.h     |  7 ++-
>  arch/loongarch/include/asm/processor.h     |  3 +
>  arch/loongarch/include/asm/switch_to.h     |  2 +-
>  arch/loongarch/kernel/hw_breakpoint.c      | 66 ++++++++++++++++++----
>  arch/loongarch/kernel/traps.c              | 12 ++--
>  6 files changed, 74 insertions(+), 24 deletions(-)
>
> --
> 2.42.0
>
>