[GIT PULL] LoongArch fixes for v6.19-rc4

[Huacai Chen]

The following changes since commit f8f9c1f4d0c7a64600e2ca312dec824a0bc2f1da:

  Linux 6.19-rc3 (2025-12-28 13:24:26 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git tags/loongarch-fixes-6.19-1

for you to fetch changes up to bb85d206be208bbf834883e948125a35ac59993a:

  samples/ftrace: Adjust LoongArch register restore order in direct calls (2025-12-31 15:19:25 +0800)

----------------------------------------------------------------
LoongArch fixes for v6.19-rc4

Complete CPUCFG registers definition, set correct protection_map[] for
VM_NONE/VM_SHARED, fix some bugs about orc stack unwinder, ftrace and BPF
JIT.
----------------------------------------------------------------
Chenghao Duan (7):
      LoongArch: Enable exception fixup for specific ADE subcode
      LoongArch: Refactor register restoration in ftrace_common_return
      LoongArch: BPF: Save return address register ra to t0 before trampoline
      LoongArch: BPF: Adjust the jump offset of tail calls
      LoongArch: BPF: Enable trampoline-based tracing for module functions
      LoongArch: BPF: Enhance the bpf_arch_text_poke() function
      samples/ftrace: Adjust LoongArch register restore order in direct calls

Hengqi Chen (2):
      LoongArch: BPF: Sign extend kfunc call arguments
      LoongArch: BPF: Zero-extend bpf_tail_call() index

Huacai Chen (2):
      LoongArch: Complete CPUCFG registers definition
      LoongArch: Set correct protection_map[] for VM_NONE/VM_SHARED

Tiezhu Yang (3):
      LoongArch: Use UNWIND_HINT_END_OF_STACK for entry points
      LoongArch: Remove is_entry_func() and kernel_entry_end
      LoongArch: Remove unnecessary checks for ORC unwinder

 arch/loongarch/include/asm/loongarch.h      |  7 ++++
 arch/loongarch/kernel/head.S                |  4 +-
 arch/loongarch/kernel/mcount_dyn.S          | 14 +++++--
 arch/loongarch/kernel/traps.c               |  5 +++
 arch/loongarch/kernel/unwind_orc.c          | 27 +++-----------
 arch/loongarch/mm/cache.c                   |  8 ++--
 arch/loongarch/net/bpf_jit.c                | 58 +++++++++++++++++++++++------
 arch/loongarch/net/bpf_jit.h                | 26 +++++++++++++
 samples/ftrace/ftrace-direct-modify.c       |  8 ++--
 samples/ftrace/ftrace-direct-multi-modify.c |  8 ++--
 samples/ftrace/ftrace-direct-multi.c        |  4 +-
 samples/ftrace/ftrace-direct-too.c          |  4 +-
 samples/ftrace/ftrace-direct.c              |  4 +-
 13 files changed, 120 insertions(+), 57 deletions(-)