[GIT PULL] LoongArch changes for v6.3

[Huacai Chen]

The following changes since commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c:

  Linux 6.2 (2023-02-19 14:24:22 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git tags/loongarch-6.3

for you to fetch changes up to 8883bf83127d533abb415b204eabc064863ae6c9:

  selftests/ftrace: Add LoongArch kprobe args string tests support (2023-02-25 22:12:18 +0800)

----------------------------------------------------------------
LoongArch changes for v6.3

1, Make -mstrict-align configurable;
2, Add kernel relocation and KASLR support;
3, Add single kernel image implementation for kdump;
4, Add hardware breakpoints/watchpoints support;
5, Add kprobes/kretprobes/kprobes_on_ftrace support;
6, Add LoongArch support for some selftests.

----------------------------------------------------------------
Huacai Chen (4):
      Merge 'pci/enumeration' into loongarch-next
      LoongArch: Make -mstrict-align configurable
      tools: Add LoongArch build infrastructure
      selftests/seccomp: Add LoongArch selftesting support

Jinyang He (1):
      LoongArch: Fix Chinese comma in cpu.h

Qing Zhang (5):
      LoongArch: Add hardware breakpoints/watchpoints support
      LoongArch: ptrace: Expose hardware breakpoints to debuggers
      LoongArch: ptrace: Add function argument access API
      LoongArch: ptrace: Add hardware single step support
      selftests/ftrace: Add LoongArch kprobe args string tests support

Tiezhu Yang (7):
      LoongArch: Only call get_timer_irq() once in constant_clockevent_init()
      LoongArch: Simulate branch and PC* instructions
      LoongArch: Add kprobes support
      LoongArch: Add kretprobes support
      LoongArch: Add kprobes on ftrace support
      LoongArch: Mark some assembler symbols as non-kprobe-able
      samples/kprobes: Add LoongArch support

Xi Ruoyao (1):
      LoongArch: Use la.pcrel instead of la.abs when it's trivially possible

Youling Tang (6):
      LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs
      LoongArch: Add la_abs macro implementation
      LoongArch: Add support for kernel relocation
      LoongArch: Add support for kernel address space layout randomization (KASLR)
      LoongArch: kdump: Add single kernel image implementation
      LoongArch: kdump: Add crashkernel=YM handling

 arch/loongarch/Kconfig                             |  65 ++-
 arch/loongarch/Makefile                            |  14 +-
 arch/loongarch/configs/loongson3_defconfig         |   1 +
 arch/loongarch/include/asm/addrspace.h             |   2 +
 arch/loongarch/include/asm/asm.h                   |  10 +
 arch/loongarch/include/asm/asmmacro.h              |  17 +
 arch/loongarch/include/asm/cpu.h                   |   2 +-
 arch/loongarch/include/asm/hw_breakpoint.h         | 145 ++++++
 arch/loongarch/include/asm/inst.h                  |  58 +++
 arch/loongarch/include/asm/kprobes.h               |  61 +++
 arch/loongarch/include/asm/loongarch.h             |  35 +-
 arch/loongarch/include/asm/processor.h             |  16 +-
 arch/loongarch/include/asm/ptrace.h                |  39 ++
 arch/loongarch/include/asm/setup.h                 |  16 +
 arch/loongarch/include/asm/stackframe.h            |  13 +-
 arch/loongarch/include/asm/switch_to.h             |   1 +
 arch/loongarch/include/asm/uaccess.h               |   1 -
 arch/loongarch/include/uapi/asm/ptrace.h           |   9 +
 arch/loongarch/kernel/Makefile                     |   9 +-
 arch/loongarch/kernel/entry.S                      |  91 ++--
 arch/loongarch/kernel/ftrace_dyn.c                 |  64 +++
 arch/loongarch/kernel/genex.S                      |   8 +-
 arch/loongarch/kernel/head.S                       |  33 +-
 arch/loongarch/kernel/hw_breakpoint.c              | 548 +++++++++++++++++++++
 arch/loongarch/kernel/inst.c                       | 123 +++++
 arch/loongarch/kernel/kprobes.c                    | 406 +++++++++++++++
 arch/loongarch/kernel/kprobes_trampoline.S         |  96 ++++
 arch/loongarch/kernel/process.c                    |   7 +
 arch/loongarch/kernel/ptrace.c                     | 472 ++++++++++++++++++
 arch/loongarch/kernel/relocate.c                   | 242 +++++++++
 arch/loongarch/kernel/setup.c                      |  14 +-
 arch/loongarch/kernel/time.c                       |  11 +-
 arch/loongarch/kernel/traps.c                      |  68 ++-
 arch/loongarch/kernel/vmlinux.lds.S                |  20 +-
 arch/loongarch/lib/memcpy.S                        |   3 +
 arch/loongarch/lib/memmove.S                       |   4 +
 arch/loongarch/lib/memset.S                        |   3 +
 arch/loongarch/mm/fault.c                          |   3 +
 arch/loongarch/mm/tlbex.S                          |  17 +-
 arch/loongarch/power/suspend_asm.S                 |   5 +-
 drivers/pci/controller/pci-loongson.c              |  71 +--
 drivers/pci/pci.c                                  |  10 +
 drivers/pci/pcie/portdrv.c                         |  16 +-
 drivers/pci/probe.c                                |   2 +
 include/linux/pci.h                                |   1 +
 include/uapi/linux/elf.h                           |   2 +
 samples/kprobes/kprobe_example.c                   |   8 +
 .../arch/loongarch/include/uapi/asm/bitsperlong.h  |   9 +
 tools/scripts/Makefile.arch                        |  11 +-
 .../ftrace/test.d/kprobe/kprobe_args_string.tc     |   3 +
 .../ftrace/test.d/kprobe/kprobe_args_syntax.tc     |   4 +
 tools/testing/selftests/seccomp/seccomp_bpf.c      |   6 +
 52 files changed, 2728 insertions(+), 167 deletions(-)
 create mode 100644 arch/loongarch/include/asm/hw_breakpoint.h
 create mode 100644 arch/loongarch/include/asm/kprobes.h
 create mode 100644 arch/loongarch/kernel/hw_breakpoint.c
 create mode 100644 arch/loongarch/kernel/kprobes.c
 create mode 100644 arch/loongarch/kernel/kprobes_trampoline.S
 create mode 100644 arch/loongarch/kernel/relocate.c
 create mode 100644 tools/arch/loongarch/include/uapi/asm/bitsperlong.h