[GIT PULL] LoongArch changes for v7.1

[Huacai Chen]

The following changes since commit 028ef9c96e96197026887c0f092424679298aae8:

  Linux 7.0 (2026-04-12 13:48:06 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git tags/loongarch-7.1

for you to fetch changes up to 7939f96f26e96b69db1fe4e7c18537a679696358:

  selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch (2026-04-23 12:49:46 +0800)

----------------------------------------------------------------
LoongArch changes for v7.1

1, Adjust build infrastructure for 32BIT/64BIT;
2, Add HIGHMEM (PKMAP and FIX_KMAP) support;
3, Show and handle CPU vulnerabilites correctly;
4, Batch the icache maintenance for jump_label;
5, Add more atomic instructions support for BPF JIT;
6, Add more features (e.g. fsession) support for BPF trampoline;
7, Some bug fixes and other small changes.

Note: There is a conflict in arch/loongarch/mm/init.c but can be
simply fixed by adjusting context.

----------------------------------------------------------------
Greg Kroah-Hartman (1):
      LoongArch: Add spectre boundry for syscall dispatch table

Hengqi Chen (2):
      LoongArch: BPF: Introduce emit_store_stack_imm64() helper
      LoongArch: BPF: Add fsession support for trampolines

Huacai Chen (4):
      LoongArch: Adjust build infrastructure for 32BIT/64BIT
      LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
      LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
      LoongArch: Show CPU vulnerabilites correctly

Lisa Robinson (1):
      LoongArch: Align FPU register state to 32 bytes

Luo Qiu (1):
      LoongArch: Use get_random_canary() for stack canary init

Tiezhu Yang (9):
      LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
      LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
      LoongArch: BPF: Add the default case in emit_atomic() and rename it
      LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
      LoongArch: BPF: Support load-acquire and store-release instructions
      LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
      LoongArch: BPF: Support small struct arguments for trampoline
      LoongArch: BPF: Support up to 12 function arguments for trampoline
      selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch

Youling Tang (2):
      LoongArch: Add flush_icache_all()/local_flush_icache_all()
      LoongArch: Batch the icache maintenance for jump_label

Yuqian Yang (1):
      LoongArch: Improve the logging of disabling KASLR

 arch/loongarch/Kconfig                             | 120 +++++--
 arch/loongarch/Makefile                            |  23 +-
 arch/loongarch/boot/Makefile                       |   6 +
 arch/loongarch/include/asm/cacheflush.h            |  16 +-
 arch/loongarch/include/asm/cpu-features.h          |   1 +
 arch/loongarch/include/asm/cpu.h                   |  64 ++--
 arch/loongarch/include/asm/fixmap.h                |  14 +
 arch/loongarch/include/asm/highmem.h               |  43 +++
 arch/loongarch/include/asm/inst.h                  |  10 +
 arch/loongarch/include/asm/irq_work.h              |   2 +-
 arch/loongarch/include/asm/jump_label.h            |   2 +
 arch/loongarch/include/asm/page.h                  |   4 -
 arch/loongarch/include/asm/pgtable.h               |  12 +
 arch/loongarch/include/asm/processor.h             |   2 +-
 arch/loongarch/include/asm/stackprotector.h        |   9 +-
 arch/loongarch/include/asm/syscall.h               |   4 +
 arch/loongarch/include/uapi/asm/hwcap.h            |   1 +
 arch/loongarch/kernel/cpu-probe.c                  |  11 +
 arch/loongarch/kernel/fpu.S                        |  12 +-
 arch/loongarch/kernel/inst.c                       |   6 +-
 arch/loongarch/kernel/jump_label.c                 |  12 +-
 arch/loongarch/kernel/proc.c                       |   2 +
 arch/loongarch/kernel/process.c                    |   2 +
 arch/loongarch/kernel/relocate.c                   |  26 +-
 arch/loongarch/kernel/syscall.c                    |   3 +-
 arch/loongarch/kernel/vmlinux.lds.S                |   7 +-
 arch/loongarch/kvm/Kconfig                         |   2 +-
 arch/loongarch/lib/Makefile                        |   6 +-
 arch/loongarch/mm/Makefile                         |   1 +
 arch/loongarch/mm/cache.c                          |  10 -
 arch/loongarch/mm/highmem.c                        |  12 +
 arch/loongarch/mm/init.c                           |  61 +++-
 arch/loongarch/mm/pgtable.c                        |  27 ++
 arch/loongarch/net/bpf_jit.c                       | 381 +++++++++++++++++----
 drivers/firmware/efi/libstub/Makefile              |   1 +
 drivers/pci/controller/Kconfig                     |   2 +-
 lib/crc/Kconfig                                    |   2 +-
 tools/testing/selftests/bpf/progs/bpf_misc.h       |   4 +-
 .../selftests/bpf/progs/verifier_precision.c       |   4 +-
 39 files changed, 726 insertions(+), 201 deletions(-)
 create mode 100644 arch/loongarch/include/asm/highmem.h
 create mode 100644 arch/loongarch/mm/highmem.c