Merge tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Raise minimum clang version to 18.0.0

 - Enable initial Rust support for LoongArch

 - Add built-in dtb support for LoongArch

 - Use generic interface to support crashkernel=X,[high,low]

 - Some bug fixes and other small changes

 - Update the default config file.

* tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (22 commits)
  MAINTAINERS: Add BPF JIT for LOONGARCH entry
  LoongArch: Update Loongson-3 default config file
  LoongArch: BPF: Prevent out-of-bounds memory access
  LoongArch: BPF: Support 64-bit pointers to kfuncs
  LoongArch: Fix definition of ftrace_regs_set_instruction_pointer()
  LoongArch: Use generic interface to support crashkernel=X,[high,low]
  LoongArch: Fix and simplify fcsr initialization on execve()
  LoongArch: Let cores_io_master cover the largest NR_CPUS
  LoongArch: Change SHMLBA from SZ_64K to PAGE_SIZE
  LoongArch: Add a missing call to efi_esrt_init()
  LoongArch: Parsing CPU-related information from DTS
  LoongArch: dts: DeviceTree for Loongson-2K2000
  LoongArch: dts: DeviceTree for Loongson-2K1000
  LoongArch: dts: DeviceTree for Loongson-2K0500
  LoongArch: Allow device trees be built into the kernel
  dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for interrupt-names
  dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for reg-names
  dt-bindings: loongarch: Add Loongson SoC boards compatibles
  dt-bindings: loongarch: Add CPU bindings for LoongArch
  LoongArch: Enable initial Rust support
  ...

1 files changed, 13 insertions, 11 deletions

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2e76c3476e2a..31b3a25680d0 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -888,9 +888,9 @@
 			memory region [offset, offset + size] for that kernel
 			image. If '@offset' is omitted, then a suitable offset
 			is selected automatically.
-			[KNL, X86-64, ARM64, RISCV] Select a region under 4G first, and
-			fall back to reserve region above 4G when '@offset'
-			hasn't been specified.
+			[KNL, X86-64, ARM64, RISCV, LoongArch] Select a region
+			under 4G first, and fall back to reserve region above
+			4G when '@offset' hasn't been specified.
 			See Documentation/admin-guide/kdump/kdump.rst for further details.
 
 	crashkernel=range1:size1[,range2:size2,...][@offset]
@@ -901,25 +901,27 @@
 			Documentation/admin-guide/kdump/kdump.rst for an example.
 
 	crashkernel=size[KMG],high
-			[KNL, X86-64, ARM64, RISCV] range could be above 4G.
+			[KNL, X86-64, ARM64, RISCV, LoongArch] range could be
+			above 4G.
 			Allow kernel to allocate physical memory region from top,
 			so could be above 4G if system have more than 4G ram
 			installed. Otherwise memory region will be allocated
 			below 4G, if available.
 			It will be ignored if crashkernel=X is specified.
 	crashkernel=size[KMG],low
-			[KNL, X86-64, ARM64, RISCV] range under 4G. When crashkernel=X,high
-			is passed, kernel could allocate physical memory region
-			above 4G, that cause second kernel crash on system
-			that require some amount of low memory, e.g. swiotlb
-			requires at least 64M+32K low memory, also enough extra
-			low memory is needed to make sure DMA buffers for 32-bit
-			devices won't run out. Kernel would try to allocate
+			[KNL, X86-64, ARM64, RISCV, LoongArch] range under 4G.
+			When crashkernel=X,high is passed, kernel could allocate
+			physical memory region above 4G, that cause second kernel
+			crash on system that require some amount of low memory,
+			e.g. swiotlb requires at least 64M+32K low memory, also
+			enough extra low memory is needed to make sure DMA buffers
+			for 32-bit devices won't run out. Kernel would try to allocate
 			default	size of memory below 4G automatically. The default
 			size is	platform dependent.
 			  --> x86: max(swiotlb_size_or_default() + 8MiB, 256MiB)
 			  --> arm64: 128MiB
 			  --> riscv: 128MiB
+			  --> loongarch: 128MiB
 			This one lets the user specify own low range under 4G
 			for second kernel instead.
 			0: to disable low allocation.