Merge tag 'loongarch-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Add LoongArch-specific ACPI initialization

 - Set NX compat flag in PE/COFF efi header

 - Use pa_to_nid()/nid_to_addrbase() rather than hard-code

 - Detect and expose LAMCAS/DIV32 feature existence

 - Fix and improve perf hardware breakpoints

 - Fix and improve BPF JIT (trampoline and 32-bit operations)

 - Add arch_crash_save_vmcoreinfo() support

 - Some bug fixes and other small changes

* tag 'loongarch-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (24 commits)
  soc: loongson: loongson2_guts: Use of_root instead of own reference
  soc: loongson: loongson2_pm: Fix build warnings for 32BIT
  LoongArch: dts: loongson-2k0500: Drop unsupported bus_id in DWMAC
  LoongArch: BPF: Optimize 32-bit operations using native instructions
  LoongArch: BPF: Clean up and decouple is32 parameter from move_imm()
  LoongArch: BPF: Fix stack arguments for indirect trampolines
  LoongArch: Add arch_crash_save_vmcoreinfo() support
  LoongArch: Fix one-shot limitation for perf hardware breakpoints
  LoongArch: Fix perf hardware breakpoint failure via installation
  LoongArch: Only send SIGTRAP signal if necessary in do_watch()
  LoongArch: Fix architectural naming typo for CSR_FWPS_SKIP
  LoongArch: Fix bitmask corruption in update_bp_registers()
  LoongArch: Remove redundant call in update_bp_registers()
  LoongArch: Remove arch-specific __smp_mb__{before,after}_atomic()
  LoongArch: Detect and expose DIV32 feature existence
  LoongArch: Detect and expose LAMCAS feature existence
  LoongArch: Use pa_to_nid()/nid_to_addrbase() rather than hard-code
  LoongArch: Don't init & online empty nodes
  LoongArch: Call cpu_final_simd() with pure_initcall()
  LoongArch: Use assign_bit() API where applicable
  ...

1 files changed, 36 insertions, 0 deletions

diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst
index 5f1df6d08050..0fc4294b90a4 100644
--- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
+++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
@@ -594,3 +594,39 @@ va_kernel_pa_offset
 
 Indicates the offset between the kernel virtual and physical mappings.
 Used to translate virtual to physical addresses.
+
+LOONGARCH64
+===========
+
+VA_BITS
+-------
+
+The maximum number of bits for virtual addresses. Used to compute the
+virtual memory ranges.
+
+PHYS_OFFSET
+-----------
+
+Indicates the physical address of the start of memory. Used to translate
+virtual to physical addresses.
+
+PAGE_OFFSET
+-----------
+
+Indicates the virtual kernel start address of the direct-mapped RAM region.
+Used together with PHYS_OFFSET to translate between virtual and physical
+addresses.
+
+KERNELOFFSET
+------------
+
+The kernel randomization offset. Used to locate the kernel text in virtual
+memory. If KASLR is disabled, this value is zero.
+
+MODULES_VADDR|MODULES_END|VMALLOC_START|VMALLOC_END|VMEMMAP_START|VMEMMAP_END
+-----------------------------------------------------------------------------
+
+Used to get the correct ranges:
+	MODULES_VADDR ~ MODULES_END-1 : Kernel module space.
+	VMALLOC_START ~ VMALLOC_END-1 : vmalloc() / ioremap() space.
+	VMEMMAP_START ~ VMEMMAP_END-1 : vmemmap region, used for struct page array.