Merge tag 'loongarch-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai...

Pull LoongArch updates from Huacai Chen:

 - Better backtraces for humanization

 - Relay BCE exceptions to userland as SIGSEGV

 - Provide kernel fpu functions

 - Optimize memory ops (memset/memcpy/memmove)

 - Optimize checksum and crc32(c) calculation

 - Add ARCH_HAS_FORTIFY_SOURCE selection

 - Add function error injection support

 - Add ftrace with direct call support

 - Add basic perf tools support

* tag 'loongarch-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (24 commits)
  tools/perf: Add basic support for LoongArch
  LoongArch: ftrace: Add direct call trampoline samples support
  LoongArch: ftrace: Add direct call support
  LoongArch: ftrace: Implement ftrace_find_callable_addr() to simplify code
  LoongArch: ftrace: Fix build error if DYNAMIC_FTRACE_WITH_REGS is not set
  LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses
  LoongArch: Add support for function error injection
  LoongArch: Add ARCH_HAS_FORTIFY_SOURCE selection
  LoongArch: crypto: Add crc32 and crc32c hw acceleration
  LoongArch: Add checksum optimization for 64-bit system
  LoongArch: Optimize memory ops (memset/memcpy/memmove)
  LoongArch: Provide kernel fpu functions
  LoongArch: Relay BCE exceptions to userland as SIGSEGV with si_code=SEGV_BNDERR
  LoongArch: Tweak the BADV and CPUCFG.PRID lines in show_regs()
  LoongArch: Humanize the ESTAT line when showing registers
  LoongArch: Humanize the ECFG line when showing registers
  LoongArch: Humanize the EUEN line when showing registers
  LoongArch: Humanize the PRMD line when showing registers
  LoongArch: Humanize the CRMD line when showing registers
  LoongArch: Fix format of CSR lines during show_regs()
  ...

diff --cc arch/loongarch/Kconfig
Simple merge

diff --cc samples/ftrace/ftrace-direct-modify.c
index 25fba66f61c0576850645fa21ea54e733948299c,ca72c3b710eb5080841a429cdcf268dfb4fada88..06d88914901266e248956d3809c982058168a66c
--- 1/samples/ftrace/ftrace-direct-modify.c
--- 2/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@@ -96,8 -96,40 +96,42 @@@ asm 
  
  #endif /* CONFIG_S390 */
  
+ #ifdef CONFIG_LOONGARCH
+ 
+ asm (
+ "     .pushsection    .text, \"ax\", @progbits\n"
+ "     .type           my_tramp1, @function\n"
+ "     .globl          my_tramp1\n"
+ "   my_tramp1:\n"
+ "     addi.d  $sp, $sp, -16\n"
+ "     st.d    $t0, $sp, 0\n"
+ "     st.d    $ra, $sp, 8\n"
+ "     bl      my_direct_func1\n"
+ "     ld.d    $t0, $sp, 0\n"
+ "     ld.d    $ra, $sp, 8\n"
+ "     addi.d  $sp, $sp, 16\n"
+ "     jr      $t0\n"
+ "     .size           my_tramp1, .-my_tramp1\n"
+ 
+ "     .type           my_tramp2, @function\n"
+ "     .globl          my_tramp2\n"
+ "   my_tramp2:\n"
+ "     addi.d  $sp, $sp, -16\n"
+ "     st.d    $t0, $sp, 0\n"
+ "     st.d    $ra, $sp, 8\n"
+ "     bl      my_direct_func2\n"
+ "     ld.d    $t0, $sp, 0\n"
+ "     ld.d    $ra, $sp, 8\n"
+ "     addi.d  $sp, $sp, 16\n"
+ "     jr      $t0\n"
+ "     .size           my_tramp2, .-my_tramp2\n"
+ "     .popsection\n"
+ );
+ 
+ #endif /* CONFIG_LOONGARCH */
+ 
 +static struct ftrace_ops direct;
 +
  static unsigned long my_tramp = (unsigned long)my_tramp1;
  static unsigned long tramps[2] = {
        (unsigned long)my_tramp1,

diff --cc samples/ftrace/ftrace-direct-multi-modify.c
Simple merge

diff --cc samples/ftrace/ftrace-direct-multi.c
Simple merge

diff --cc samples/ftrace/ftrace-direct-too.c
index f28e7b99840f0c5b72846f0370df8a94523e3fcc,ef64d750977378d2789652b1eac6b033069a6c64..a05bc2cc2261456e878ed8150436b091f1771b06
--- 1/samples/ftrace/ftrace-direct-too.c
--- 2/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@@ -70,13 -70,37 +70,40 @@@ asm 
  
  #endif /* CONFIG_S390 */
  
+ #ifdef CONFIG_LOONGARCH
+ 
+ asm (
+ "     .pushsection    .text, \"ax\", @progbits\n"
+ "     .type           my_tramp, @function\n"
+ "     .globl          my_tramp\n"
+ "   my_tramp:\n"
+ "     addi.d  $sp, $sp, -48\n"
+ "     st.d    $a0, $sp, 0\n"
+ "     st.d    $a1, $sp, 8\n"
+ "     st.d    $a2, $sp, 16\n"
+ "     st.d    $t0, $sp, 24\n"
+ "     st.d    $ra, $sp, 32\n"
+ "     bl      my_direct_func\n"
+ "     ld.d    $a0, $sp, 0\n"
+ "     ld.d    $a1, $sp, 8\n"
+ "     ld.d    $a2, $sp, 16\n"
+ "     ld.d    $t0, $sp, 24\n"
+ "     ld.d    $ra, $sp, 32\n"
+ "     addi.d  $sp, $sp, 48\n"
+ "     jr      $t0\n"
+ "     .size           my_tramp, .-my_tramp\n"
+ "     .popsection\n"
+ );
+ 
+ #endif /* CONFIG_LOONGARCH */
+ 
 +static struct ftrace_ops direct;
 +
  static int __init ftrace_direct_init(void)
  {
 -      return register_ftrace_direct((unsigned long)handle_mm_fault,
 -                                   (unsigned long)my_tramp);
 +      ftrace_set_filter_ip(&direct, (unsigned long) handle_mm_fault, 0, 0);
 +
 +      return register_ftrace_direct(&direct, (unsigned long) my_tramp);
  }
  
  static void __exit ftrace_direct_exit(void)

diff --cc samples/ftrace/ftrace-direct.c
index d81a9473b58519db9f094b9fa9eaf1c879e8627f,9be720957bf8d06680428ecd37a0e1cdcdc23eec..06879bbd339936d837649409507527984481aafd
--- 1/samples/ftrace/ftrace-direct.c
--- 2/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@@ -63,13 -63,33 +63,36 @@@ asm 
  
  #endif /* CONFIG_S390 */
  
+ #ifdef CONFIG_LOONGARCH
+ 
+ asm (
+ "     .pushsection    .text, \"ax\", @progbits\n"
+ "     .type           my_tramp, @function\n"
+ "     .globl          my_tramp\n"
+ "   my_tramp:\n"
+ "     addi.d  $sp, $sp, -32\n"
+ "     st.d    $a0, $sp, 0\n"
+ "     st.d    $t0, $sp, 8\n"
+ "     st.d    $ra, $sp, 16\n"
+ "     bl      my_direct_func\n"
+ "     ld.d    $a0, $sp, 0\n"
+ "     ld.d    $t0, $sp, 8\n"
+ "     ld.d    $ra, $sp, 16\n"
+ "     addi.d  $sp, $sp, 32\n"
+ "     jr      $t0\n"
+ "     .size           my_tramp, .-my_tramp\n"
+ "     .popsection\n"
+ );
+ 
+ #endif /* CONFIG_LOONGARCH */
+ 
 +static struct ftrace_ops direct;
 +
  static int __init ftrace_direct_init(void)
  {
 -      return register_ftrace_direct((unsigned long)wake_up_process,
 -                                   (unsigned long)my_tramp);
 +      ftrace_set_filter_ip(&direct, (unsigned long) wake_up_process, 0, 0);
 +
 +      return register_ftrace_direct(&direct, (unsigned long) my_tramp);
  }
  
  static void __exit ftrace_direct_exit(void)