Merge tag 'loongarch-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Initialize acpi_gbl_use_global_lock to false

 - Allow specify SIMD width via kernel parameters

 - Add kexec_file (both EFI & ELF format) support

 - Add PER_VMA_LOCK for page fault handling support

 - Improve BPF trampoline support

 - Update the default config file

 - Some bug fixes and other small changes

* tag 'loongarch-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (23 commits)
  LoongArch: Update Loongson-3 default config file
  LoongArch: BPF: Sign-extend struct ops return values properly
  LoongArch: BPF: Make error handling robust in arch_prepare_bpf_trampoline()
  LoongArch: BPF: Make trampoline size stable
  LoongArch: BPF: Don't align trampoline size
  LoongArch: BPF: No support of struct argument in trampoline programs
  LoongArch: BPF: No text_poke() for kernel text
  LoongArch: BPF: Remove duplicated bpf_flush_icache()
  LoongArch: BPF: Remove duplicated flags check
  LoongArch: BPF: Fix uninitialized symbol 'retval_off'
  LoongArch: BPF: Optimize sign-extention mov instructions
  LoongArch: Handle new atomic instructions for probes
  LoongArch: Try VMA lock-based page fault handling first
  LoongArch: Automatically disable kaslr if boot from kexec_file
  LoongArch: Add crash dump support for kexec_file
  LoongArch: Add ELF binary support for kexec_file
  LoongArch: Add EFI binary support for kexec_file
  LoongArch: Add preparatory infrastructure for kexec_file
  LoongArch: Add struct loongarch_image_header for kernel
  LoongArch: Allow specify SIMD width via kernel parameters
  ...

Author: torvalds

arch/loongarch/Kconfig

@@ -70,6 +70,7 @@ config LOONGARCH
 	select ARCH_SUPPORTS_LTO_CLANG_THIN
 	select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS
 	select ARCH_SUPPORTS_NUMA_BALANCING
+	select ARCH_SUPPORTS_PER_VMA_LOCK
 	select ARCH_SUPPORTS_RT
 	select ARCH_SUPPORTS_SCHED_SMT if SMP
 	select ARCH_SUPPORTS_SCHED_MC  if SMP
@@ -618,6 +619,16 @@ config CPU_HAS_PREFETCH
 config ARCH_SUPPORTS_KEXEC
 	def_bool y
 
+config ARCH_SUPPORTS_KEXEC_FILE
+	def_bool 64BIT
+
+config ARCH_SELECTS_KEXEC_FILE
+	def_bool 64BIT
+	depends on KEXEC_FILE
+	select KEXEC_ELF
+	select RELOCATABLE
+	select HAVE_IMA_KEXEC if IMA
+
 config ARCH_SUPPORTS_CRASH_DUMP
 	def_bool y
 

arch/loongarch/Makefile

@@ -115,7 +115,7 @@ ifdef CONFIG_LTO_CLANG
 # The annotate-tablejump option can not be passed to LLVM backend when LTO is enabled.
 # Ensure it is aware of linker with LTO, '--loongarch-annotate-tablejump' also needs to
 # be passed via '-mllvm' to ld.lld.
-KBUILD_LDFLAGS			+= -mllvm --loongarch-annotate-tablejump
+KBUILD_LDFLAGS			+= $(call ld-option,-mllvm --loongarch-annotate-tablejump)
 endif
 endif
 
@@ -129,7 +129,7 @@ KBUILD_RUSTFLAGS_KERNEL		+= -Crelocation-model=pie
 LDFLAGS_vmlinux			+= -static -pie --no-dynamic-linker -z notext $(call ld-option, --apply-dynamic-relocs)
 endif
 
-cflags-y += $(call cc-option, -mno-check-zero-division)
+cflags-y += $(call cc-option, -mno-check-zero-division -fno-isolate-erroneous-paths-dereference)
 
 ifndef CONFIG_KASAN
 cflags-y += -fno-builtin-memcpy -fno-builtin-memmove -fno-builtin-memset

arch/loongarch/configs/loongson3_defconfig

@@ -45,6 +45,7 @@ CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PERF_EVENTS=y
 CONFIG_KEXEC=y
+CONFIG_KEXEC_FILE=y
 CONFIG_CRASH_DUMP=y
 CONFIG_LOONGARCH=y
 CONFIG_64BIT=y
@@ -55,7 +56,7 @@ CONFIG_DMI=y
 CONFIG_EFI=y
 CONFIG_SMP=y
 CONFIG_HOTPLUG_CPU=y
-CONFIG_NR_CPUS=256
+CONFIG_NR_CPUS=2048
 CONFIG_NUMA=y
 CONFIG_CPU_HAS_FPU=y
 CONFIG_CPU_HAS_LSX=y
@@ -154,7 +155,16 @@ CONFIG_INET_ESPINTCP=y
 CONFIG_INET_IPCOMP=m
 CONFIG_INET_UDP_DIAG=y
 CONFIG_TCP_CONG_ADVANCED=y
-CONFIG_TCP_CONG_BBR=m
+CONFIG_TCP_CONG_BIC=y
+CONFIG_TCP_CONG_HSTCP=m
+CONFIG_TCP_CONG_HYBLA=m
+CONFIG_TCP_CONG_VEGAS=m
+CONFIG_TCP_CONG_NV=m
+CONFIG_TCP_CONG_SCALABLE=m
+CONFIG_TCP_CONG_VENO=m
+CONFIG_TCP_CONG_DCTCP=m
+CONFIG_TCP_CONG_CDG=m
+CONFIG_TCP_CONG_BBR=y
 CONFIG_IPV6_ROUTER_PREF=y
 CONFIG_IPV6_ROUTE_INFO=y
 CONFIG_INET6_AH=m
@@ -331,15 +341,33 @@ CONFIG_LLC2=m
 CONFIG_NET_SCHED=y
 CONFIG_NET_SCH_HTB=m
 CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFB=m
 CONFIG_NET_SCH_SFQ=m
 CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_CBS=m
+CONFIG_NET_SCH_GRED=m
 CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_SKBPRIO=m
+CONFIG_NET_SCH_QFQ=m
+CONFIG_NET_SCH_CODEL=m
+CONFIG_NET_SCH_FQ_CODEL=m
+CONFIG_NET_SCH_CAKE=m
+CONFIG_NET_SCH_FQ=m
+CONFIG_NET_SCH_PIE=m
+CONFIG_NET_SCH_FQ_PIE=m
 CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_DEFAULT=y
 CONFIG_NET_CLS_BASIC=m
 CONFIG_NET_CLS_FW=m
 CONFIG_NET_CLS_U32=m
+CONFIG_NET_CLS_FLOW=m
 CONFIG_NET_CLS_CGROUP=m
 CONFIG_NET_CLS_BPF=m
+CONFIG_NET_CLS_FLOWER=m
+CONFIG_NET_CLS_MATCHALL=m
 CONFIG_NET_CLS_ACT=y
 CONFIG_NET_ACT_POLICE=m
 CONFIG_NET_ACT_GACT=m
@@ -407,6 +435,7 @@ CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_FW_LOADER_COMPRESS=y
 CONFIG_FW_LOADER_COMPRESS_ZSTD=y
+CONFIG_SYSFB_SIMPLEFB=y
 CONFIG_EFI_ZBOOT=y
 CONFIG_EFI_BOOTLOADER_CONTROL=m
 CONFIG_EFI_CAPSULE_LOADER=m
@@ -420,6 +449,11 @@ CONFIG_MTD_CFI_AMDSTD=m
 CONFIG_MTD_CFI_STAA=m
 CONFIG_MTD_RAM=m
 CONFIG_MTD_ROM=m
+CONFIG_MTD_RAW_NAND=m
+CONFIG_MTD_NAND_PLATFORM=m
+CONFIG_MTD_NAND_LOONGSON=m
+CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC=y
+CONFIG_MTD_NAND_ECC_SW_BCH=y
 CONFIG_MTD_UBI=m
 CONFIG_MTD_UBI_BLOCK=y
 CONFIG_PARPORT=y
@@ -575,6 +609,11 @@ CONFIG_E1000=y
 CONFIG_E1000E=y
 CONFIG_IGB=y
 CONFIG_IXGBE=y
+CONFIG_I40E=y
+CONFIG_ICE=y
+CONFIG_FM10K=y
+CONFIG_IGC=y
+CONFIG_IDPF=y
 # CONFIG_NET_VENDOR_MARVELL is not set
 # CONFIG_NET_VENDOR_MELLANOX is not set
 # CONFIG_NET_VENDOR_MICREL is not set
@@ -679,6 +718,9 @@ CONFIG_USB4_NET=m
 CONFIG_INPUT_MOUSEDEV=y
 CONFIG_INPUT_MOUSEDEV_PSAUX=y
 CONFIG_INPUT_EVDEV=y
+CONFIG_KEYBOARD_GPIO=m
+CONFIG_KEYBOARD_GPIO_POLLED=m
+CONFIG_KEYBOARD_MATRIX=m
 CONFIG_KEYBOARD_XTKBD=m
 CONFIG_MOUSE_PS2_ELANTECH=y
 CONFIG_MOUSE_PS2_SENTELIC=y
@@ -703,8 +745,11 @@ CONFIG_VIRTIO_CONSOLE=y
 CONFIG_IPMI_HANDLER=m
 CONFIG_IPMI_DEVICE_INTERFACE=m
 CONFIG_IPMI_SI=m
+CONFIG_IPMI_LS2K=y
 CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_VIRTIO=m
+CONFIG_TCG_TPM=m
+CONFIG_TCG_LOONGSON=m
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_PIIX4=y
 CONFIG_I2C_DESIGNWARE_CORE=y
@@ -720,6 +765,10 @@ CONFIG_PINCTRL_LOONGSON2=y
 CONFIG_GPIO_SYSFS=y
 CONFIG_GPIO_LOONGSON=y
 CONFIG_GPIO_LOONGSON_64BIT=y
+CONFIG_GPIO_PCA953X=m
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_PCA9570=m
+CONFIG_GPIO_PCF857X=m
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_RESTART=y
 CONFIG_POWER_RESET_SYSCON=y
@@ -730,6 +779,7 @@ CONFIG_SENSORS_LM93=m
 CONFIG_SENSORS_W83795=m
 CONFIG_SENSORS_W83627HF=m
 CONFIG_LOONGSON2_THERMAL=m
+CONFIG_MFD_LOONGSON_SE=m
 CONFIG_RC_CORE=m
 CONFIG_LIRC=y
 CONFIG_RC_DECODERS=y
@@ -761,6 +811,7 @@ CONFIG_DRM_AST=y
 CONFIG_DRM_QXL=m
 CONFIG_DRM_VIRTIO_GPU=m
 CONFIG_DRM_LOONGSON=y
+CONFIG_DRM_SIMPLEDRM=y
 CONFIG_FB=y
 CONFIG_FB_EFI=y
 CONFIG_FB_RADEON=y
@@ -801,6 +852,7 @@ CONFIG_SND_HDA_CODEC_HDMI_ATI=y
 CONFIG_SND_HDA_CODEC_HDMI_NVIDIA=y
 CONFIG_SND_HDA_CODEC_CONEXANT=y
 CONFIG_SND_USB_AUDIO=m
+CONFIG_SND_USB_AUDIO_MIDI_V2=y
 CONFIG_SND_SOC=m
 CONFIG_SND_SOC_LOONGSON_CARD=m
 CONFIG_SND_SOC_ES7134=m
@@ -861,6 +913,8 @@ CONFIG_TYPEC_TCPM=m
 CONFIG_TYPEC_TCPCI=m
 CONFIG_TYPEC_UCSI=m
 CONFIG_UCSI_ACPI=m
+CONFIG_MMC=y
+CONFIG_MMC_LOONGSON2=m
 CONFIG_INFINIBAND=m
 CONFIG_EDAC=y
 # CONFIG_EDAC_LEGACY_SYSFS is not set
@@ -922,19 +976,22 @@ CONFIG_NTB_SWITCHTEC=m
 CONFIG_NTB_PERF=m
 CONFIG_NTB_TRANSPORT=m
 CONFIG_PWM=y
+CONFIG_PWM_LOONGSON=y
 CONFIG_GENERIC_PHY=y
 CONFIG_USB4=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT3_FS=y
-CONFIG_EXT3_FS_POSIX_ACL=y
-CONFIG_EXT3_FS_SECURITY=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
 CONFIG_JFS_FS=m
 CONFIG_JFS_POSIX_ACL=y
 CONFIG_JFS_SECURITY=y
 CONFIG_XFS_FS=y
+CONFIG_XFS_SUPPORT_V4=y
+CONFIG_XFS_SUPPORT_ASCII_CI=y
 CONFIG_XFS_QUOTA=y
 CONFIG_XFS_POSIX_ACL=y
 CONFIG_GFS2_FS=m
@@ -1026,9 +1083,12 @@ CONFIG_CEPH_FS_SECURITY_LABEL=y
 CONFIG_CIFS=m
 # CONFIG_CIFS_DEBUG is not set
 CONFIG_9P_FS=y
+CONFIG_NLS_DEFAULT="utf8"
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_CODEPAGE_936=y
+CONFIG_NLS_CODEPAGE_950=y
 CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_UTF8=y
 CONFIG_DLM=m
 CONFIG_KEY_DH_OPERATIONS=y
@@ -1049,9 +1109,11 @@ CONFIG_CRYPTO_CAST6=m
 CONFIG_CRYPTO_KHAZAD=m
 CONFIG_CRYPTO_SEED=m
 CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_SM4_GENERIC=m
 CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_SM3_GENERIC=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_DEFLATE=m
 CONFIG_CRYPTO_LZO=m
@@ -1063,6 +1125,7 @@ CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_USER_API_AEAD=m
 CONFIG_CRYPTO_DEV_VIRTIO=m
+CONFIG_CRYPTO_DEV_LOONGSON_RNG=m
 CONFIG_DMA_CMA=y
 CONFIG_DMA_NUMA_CMA=y
 CONFIG_CMA_SIZE_MBYTES=0

arch/loongarch/include/asm/image.h

@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * LoongArch binary image header for EFI(PE/COFF) format.
+ *
+ * Author: Youling Tang <[email protected]>
+ * Copyright (C) 2025 KylinSoft Corporation.
+ */
+
+#ifndef __ASM_IMAGE_H
+#define __ASM_IMAGE_H
+
+#ifndef __ASSEMBLER__
+
+/**
+ * struct loongarch_image_header
+ *
+ * @dos_sig: Optional PE format 'MZ' signature.
+ * @padding_1: Reserved.
+ * @kernel_entry: Kernel image entry pointer.
+ * @kernel_asize: An estimated size of the memory image size in LSB byte order.
+ * @text_offset: The image load offset in LSB byte order.
+ * @padding_2: Reserved.
+ * @pe_header: Optional offset to a PE format header.
+ **/
+
+struct loongarch_image_header {
+	uint8_t dos_sig[2];
+	uint16_t padding_1[3];
+	uint64_t kernel_entry;
+	uint64_t kernel_asize;
+	uint64_t text_offset;
+	uint32_t padding_2[7];
+	uint32_t pe_header;
+};
+
+/*
+ * loongarch_header_check_dos_sig - Helper to check the header
+ *
+ * Returns true (non-zero) if 'MZ' signature is found.
+ */
+
+static inline int loongarch_header_check_dos_sig(const struct loongarch_image_header *h)
+{
+	if (!h)
+		return 0;
+
+	return (h->dos_sig[0] == 'M' && h->dos_sig[1] == 'Z');
+}
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* __ASM_IMAGE_H */

arch/loongarch/include/asm/inst.h

@@ -77,6 +77,10 @@ enum reg2_op {
 	iocsrwrh_op     = 0x19205,
 	iocsrwrw_op     = 0x19206,
 	iocsrwrd_op     = 0x19207,
+	llacqw_op	= 0xe15e0,
+	screlw_op	= 0xe15e1,
+	llacqd_op	= 0xe15e2,
+	screld_op	= 0xe15e3,
 };
 
 enum reg2i5_op {
@@ -189,6 +193,7 @@ enum reg3_op {
 	fldxd_op	= 0x7068,
 	fstxs_op	= 0x7070,
 	fstxd_op	= 0x7078,
+	scq_op		= 0x70ae,
 	amswapw_op	= 0x70c0,
 	amswapd_op	= 0x70c1,
 	amaddw_op	= 0x70c2,

arch/loongarch/include/asm/kexec.h

@@ -41,6 +41,18 @@ struct kimage_arch {
 	unsigned long systable_ptr;
 };
 
+#ifdef CONFIG_KEXEC_FILE
+extern const struct kexec_file_ops kexec_efi_ops;
+extern const struct kexec_file_ops kexec_elf_ops;
+
+int arch_kimage_file_post_load_cleanup(struct kimage *image);
+#define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup
+
+extern int load_other_segments(struct kimage *image,
+		unsigned long kernel_load_addr, unsigned long kernel_size,
+		char *initrd, unsigned long initrd_len, char *cmdline, unsigned long cmdline_len);
+#endif
+
 typedef void (*do_kexec_t)(unsigned long efi_boot,
 			   unsigned long cmdline_ptr,
 			   unsigned long systable_ptr,

arch/loongarch/kernel/Makefile

@@ -62,6 +62,7 @@ obj-$(CONFIG_MAGIC_SYSRQ)	+= sysrq.o
 obj-$(CONFIG_RELOCATABLE)	+= relocate.o
 
 obj-$(CONFIG_KEXEC_CORE)	+= machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_KEXEC_FILE)	+= machine_kexec_file.o kexec_efi.o kexec_elf.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
 
 obj-$(CONFIG_UNWINDER_GUESS)	+= unwind_guess.o