Merge tag 'loongarch-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Fix build failure with GCC 15 due to default -std=gnu23

 - Add PREEMPT_RT/PREEMPT_LAZY support

 - Add I2S in DTS for Loongson-2K1000/Loongson-2K2000

 - Some bug fixes and other small changes

* tag 'loongarch-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Update Loongson-3 default config file
  LoongArch: dts: Add I2S support to Loongson-2K2000
  LoongArch: dts: Add I2S support to Loongson-2K1000
  LoongArch: Allow to enable PREEMPT_LAZY
  LoongArch: Allow to enable PREEMPT_RT
  LoongArch: Select HAVE_POSIX_CPU_TIMERS_TASK_WORK
  LoongArch: Fix sleeping in atomic context for PREEMPT_RT
  LoongArch: Reduce min_delta for the arch clockevent device
  LoongArch: BPF: Sign-extend return values
  LoongArch: Fix build failure with GCC 15 (-std=gnu23)
  LoongArch: Explicitly specify code model in Makefile

Author: torvalds

arch/loongarch/Kconfig

@@ -23,6 +23,7 @@ config LOONGARCH
 	select ARCH_HAS_KERNEL_FPU_SUPPORT if CPU_HAS_FPU
 	select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
 	select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
+	select ARCH_HAS_PREEMPT_LAZY
 	select ARCH_HAS_PTE_DEVMAP
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_SET_MEMORY
@@ -66,6 +67,7 @@ config LOONGARCH
 	select ARCH_SUPPORTS_LTO_CLANG
 	select ARCH_SUPPORTS_LTO_CLANG_THIN
 	select ARCH_SUPPORTS_NUMA_BALANCING
+	select ARCH_SUPPORTS_RT
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF
 	select ARCH_USE_QUEUED_RWLOCKS
@@ -155,6 +157,7 @@ config LOONGARCH
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP
+	select HAVE_POSIX_CPU_TIMERS_TASK_WORK
 	select HAVE_PREEMPT_DYNAMIC_KEY
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_RELIABLE_STACKTRACE if UNWINDER_ORC

arch/loongarch/Makefile

@@ -59,7 +59,7 @@ endif
 
 ifdef CONFIG_64BIT
 ld-emul			= $(64bit-emul)
-cflags-y		+= -mabi=lp64s
+cflags-y		+= -mabi=lp64s -mcmodel=normal
 endif
 
 cflags-y			+= -pipe $(CC_FLAGS_NO_FPU)
@@ -104,7 +104,7 @@ ifdef CONFIG_OBJTOOL
 KBUILD_CFLAGS			+= -fno-jump-tables
 endif
 
-KBUILD_RUSTFLAGS		+= --target=loongarch64-unknown-none-softfloat
+KBUILD_RUSTFLAGS		+= --target=loongarch64-unknown-none-softfloat -Ccode-model=small
 KBUILD_RUSTFLAGS_KERNEL		+= -Zdirect-access-external-data=yes
 KBUILD_RUSTFLAGS_MODULE		+= -Zdirect-access-external-data=no
 

arch/loongarch/boot/dts/loongson-2k1000.dtsi

@@ -266,7 +266,7 @@
 			status = "disabled";
 		};
 
-		dma-controller@1fe00c20 {
+		apbdma2: dma-controller@1fe00c20 {
 			compatible = "loongson,ls2k1000-apbdma";
 			reg = <0x0 0x1fe00c20 0x0 0x8>;
 			interrupt-parent = <&liointc1>;
@@ -276,7 +276,7 @@
 			status = "disabled";
 		};
 
-		dma-controller@1fe00c30 {
+		apbdma3: dma-controller@1fe00c30 {
 			compatible = "loongson,ls2k1000-apbdma";
 			reg = <0x0 0x1fe00c30 0x0 0x8>;
 			interrupt-parent = <&liointc1>;
@@ -352,6 +352,19 @@
 			status = "disabled";
 		};
 
+		i2s: i2s@1fe2d000 {
+			compatible = "loongson,ls2k1000-i2s";
+			reg = <0 0x1fe2d000 0 0x14>,
+			      <0 0x1fe00438 0 0x8>;
+			interrupt-parent = <&liointc0>;
+			interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk LOONGSON2_APB_CLK>;
+			dmas = <&apbdma2 0>, <&apbdma3 0>;
+			dma-names = "tx", "rx";
+			#sound-dai-cells = <0>;
+			status = "disabled";
+		};
+
 		spi0: spi@1fff0220 {
 			compatible = "loongson,ls2k1000-spi";
 			reg = <0x0 0x1fff0220 0x0 0x10>;

arch/loongarch/boot/dts/loongson-2k2000.dtsi

@@ -173,6 +173,22 @@
 			status = "disabled";
 		};
 
+		i2c@1fe00120 {
+			compatible = "loongson,ls2k-i2c";
+			reg = <0x0 0x1fe00120 0x0 0x8>;
+			interrupt-parent = <&liointc>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
+		i2c@1fe00130 {
+			compatible = "loongson,ls2k-i2c";
+			reg = <0x0 0x1fe00130 0x0 0x8>;
+			interrupt-parent = <&liointc>;
+			interrupts = <9 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
 		uart0: serial@1fe001e0 {
 			compatible = "ns16550a";
 			reg = <0x0 0x1fe001e0 0x0 0x10>;
@@ -243,9 +259,11 @@
 				status = "disabled";
 			};
 
-			hda@7,0 {
+			i2s@7,0 {
 				reg = <0x3800 0x0 0x0 0x0 0x0>;
-				interrupts = <58 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts = <78 IRQ_TYPE_LEVEL_HIGH>,
+					     <79 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "tx", "rx";
 				interrupt-parent = <&pic>;
 				status = "disabled";
 			};

arch/loongarch/configs/loongson3_defconfig

@@ -1,4 +1,5 @@
 # CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_KERNEL_ZSTD=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_NO_HZ=y
@@ -70,6 +71,14 @@ CONFIG_ACPI_IPMI=m
 CONFIG_ACPI_HOTPLUG_CPU=y
 CONFIG_ACPI_PCI_SLOT=y
 CONFIG_ACPI_HOTPLUG_MEMORY=y
+CONFIG_ACPI_BGRT=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
+CONFIG_LOONGSON3_CPUFREQ=m
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM=m
 CONFIG_JUMP_LABEL=y
@@ -78,13 +87,18 @@ CONFIG_MODULE_FORCE_LOAD=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 CONFIG_MODVERSIONS=y
+CONFIG_MODULE_COMPRESS=y
+CONFIG_MODULE_COMPRESS_ZSTD=y
+CONFIG_MODULE_DECOMPRESS=y
 CONFIG_BLK_DEV_ZONED=y
 CONFIG_BLK_DEV_THROTTLING=y
 CONFIG_BLK_WBT=y
 CONFIG_BLK_CGROUP_IOLATENCY=y
 CONFIG_BLK_CGROUP_FC_APPID=y
 CONFIG_BLK_CGROUP_IOCOST=y
 CONFIG_BLK_CGROUP_IOPRIO=y
+CONFIG_BLK_INLINE_ENCRYPTION=y
+CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_BSD_DISKLABEL=y
 CONFIG_UNIXWARE_DISKLABEL=y
@@ -413,7 +427,16 @@ CONFIG_PARPORT_PC=y
 CONFIG_PARPORT_SERIAL=y
 CONFIG_PARPORT_PC_FIFO=y
 CONFIG_ZRAM=m
+CONFIG_ZRAM_BACKEND_LZ4=y
+CONFIG_ZRAM_BACKEND_LZ4HC=y
+CONFIG_ZRAM_BACKEND_ZSTD=y
+CONFIG_ZRAM_BACKEND_DEFLATE=y
+CONFIG_ZRAM_BACKEND_842=y
+CONFIG_ZRAM_BACKEND_LZO=y
 CONFIG_ZRAM_DEF_COMP_ZSTD=y
+CONFIG_ZRAM_WRITEBACK=y
+CONFIG_ZRAM_MEMORY_TRACKING=y
+CONFIG_ZRAM_MULTI_COMP=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_DRBD=m
 CONFIG_BLK_DEV_NBD=m
@@ -433,6 +456,9 @@ CONFIG_NVME_TARGET_RDMA=m
 CONFIG_NVME_TARGET_FC=m
 CONFIG_NVME_TARGET_TCP=m
 CONFIG_EEPROM_AT24=m
+CONFIG_PVPANIC=y
+CONFIG_PVPANIC_MMIO=m
+CONFIG_PVPANIC_PCI=m
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_DEV_SR=y
 CONFIG_CHR_DEV_SG=y
@@ -470,12 +496,10 @@ CONFIG_PATA_ATIIXP=y
 CONFIG_PATA_PCMCIA=m
 CONFIG_MD=y
 CONFIG_BLK_DEV_MD=m
-CONFIG_MD_LINEAR=m
 CONFIG_MD_RAID0=m
 CONFIG_MD_RAID1=m
 CONFIG_MD_RAID10=m
 CONFIG_MD_RAID456=m
-CONFIG_MD_MULTIPATH=m
 CONFIG_BCACHE=m
 CONFIG_BLK_DEV_DM=y
 CONFIG_DM_CRYPT=m
@@ -489,6 +513,16 @@ CONFIG_DM_ZERO=m
 CONFIG_DM_MULTIPATH=m
 CONFIG_DM_MULTIPATH_QL=m
 CONFIG_DM_MULTIPATH_ST=m
+CONFIG_DM_MULTIPATH_HST=m
+CONFIG_DM_MULTIPATH_IOA=m
+CONFIG_DM_INIT=y
+CONFIG_DM_UEVENT=y
+CONFIG_DM_VERITY=m
+CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG=y
+CONFIG_DM_VERITY_FEC=y
+CONFIG_DM_INTEGRITY=m
+CONFIG_DM_ZONED=m
+CONFIG_DM_VDO=m
 CONFIG_TARGET_CORE=m
 CONFIG_TCM_IBLOCK=m
 CONFIG_TCM_FILEIO=m
@@ -500,6 +534,13 @@ CONFIG_NETDEVICES=y
 CONFIG_BONDING=m
 CONFIG_DUMMY=y
 CONFIG_WIREGUARD=m
+CONFIG_IFB=m
+CONFIG_NET_TEAM=m
+CONFIG_NET_TEAM_MODE_BROADCAST=m
+CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
+CONFIG_NET_TEAM_MODE_RANDOM=m
+CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
+CONFIG_NET_TEAM_MODE_LOADBALANCE=m
 CONFIG_MACVLAN=m
 CONFIG_MACVTAP=m
 CONFIG_IPVLAN=m
@@ -580,12 +621,14 @@ CONFIG_PPP_ASYNC=m
 CONFIG_PPP_SYNC_TTY=m
 CONFIG_USB_RTL8150=m
 CONFIG_USB_RTL8152=m
+CONFIG_USB_USBNET=m
 # CONFIG_USB_NET_AX8817X is not set
 # CONFIG_USB_NET_AX88179_178A is not set
 CONFIG_USB_NET_CDC_EEM=m
 CONFIG_USB_NET_HUAWEI_CDC_NCM=m
 CONFIG_USB_NET_CDC_MBIM=m
 # CONFIG_USB_NET_NET1080 is not set
+CONFIG_USB_NET_RNDIS_HOST=m
 # CONFIG_USB_BELKIN is not set
 # CONFIG_USB_ARMLINUX is not set
 # CONFIG_USB_NET_ZAURUS is not set
@@ -594,10 +637,11 @@ CONFIG_ATH9K_HTC=m
 CONFIG_IWLWIFI=m
 CONFIG_IWLDVM=m
 CONFIG_IWLMVM=m
-CONFIG_HOSTAP=m
 CONFIG_MT7601U=m
 CONFIG_RT2X00=m
 CONFIG_RT2800USB=m
+CONFIG_RTL8180=m
+CONFIG_RTL8187=m
 CONFIG_RTL8192CE=m
 CONFIG_RTL8192SE=m
 CONFIG_RTL8192DE=m
@@ -607,18 +651,26 @@ CONFIG_RTL8188EE=m
 CONFIG_RTL8192EE=m
 CONFIG_RTL8821AE=m
 CONFIG_RTL8192CU=m
+CONFIG_RTL8192DU=m
 # CONFIG_RTLWIFI_DEBUG is not set
 CONFIG_RTL8XXXU=m
 CONFIG_RTW88=m
 CONFIG_RTW88_8822BE=m
+CONFIG_RTW88_8822BU=m
 CONFIG_RTW88_8822CE=m
+CONFIG_RTW88_8822CU=m
 CONFIG_RTW88_8723DE=m
+CONFIG_RTW88_8723DU=m
 CONFIG_RTW88_8821CE=m
+CONFIG_RTW88_8821CU=m
 CONFIG_RTW89=m
+CONFIG_RTW89_8851BE=m
 CONFIG_RTW89_8852AE=m
+CONFIG_RTW89_8852BE=m
+CONFIG_RTW89_8852BTE=m
 CONFIG_RTW89_8852CE=m
+CONFIG_RTW89_8922AE=m
 CONFIG_ZD1211RW=m
-CONFIG_USB_NET_RNDIS_WLAN=m
 CONFIG_USB4_NET=m
 CONFIG_INPUT_MOUSEDEV=y
 CONFIG_INPUT_MOUSEDEV_PSAUX=y
@@ -651,6 +703,9 @@ CONFIG_HW_RANDOM=y
 CONFIG_HW_RANDOM_VIRTIO=m
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_PIIX4=y
+CONFIG_I2C_DESIGNWARE_CORE=y
+CONFIG_I2C_DESIGNWARE_SLAVE=y
+CONFIG_I2C_DESIGNWARE_PCI=y
 CONFIG_I2C_GPIO=y
 CONFIG_I2C_LS2X=y
 CONFIG_SPI=y
@@ -727,11 +782,22 @@ CONFIG_SND_HDA_CODEC_CONEXANT=y
 CONFIG_SND_USB_AUDIO=m
 CONFIG_SND_SOC=m
 CONFIG_SND_SOC_LOONGSON_CARD=m
+CONFIG_SND_SOC_ES7134=m
+CONFIG_SND_SOC_ES7241=m
+CONFIG_SND_SOC_ES8311=m
+CONFIG_SND_SOC_ES8316=m
+CONFIG_SND_SOC_ES8323=m
+CONFIG_SND_SOC_ES8326=m
+CONFIG_SND_SOC_ES8328_I2C=m
+CONFIG_SND_SOC_ES8328_SPI=m
+CONFIG_SND_SOC_UDA1334=m
+CONFIG_SND_SOC_UDA1342=m
 CONFIG_SND_VIRTIO=m
 CONFIG_HIDRAW=y
 CONFIG_UHID=m
 CONFIG_HID_A4TECH=m
 CONFIG_HID_CHERRY=m
+CONFIG_HID_ELAN=m
 CONFIG_HID_LOGITECH=m
 CONFIG_HID_LOGITECH_DJ=m
 CONFIG_LOGITECH_FF=y
@@ -740,7 +806,11 @@ CONFIG_LOGIG940_FF=y
 CONFIG_HID_MICROSOFT=m
 CONFIG_HID_MULTITOUCH=m
 CONFIG_HID_SUNPLUS=m
+CONFIG_HID_WACOM=m
 CONFIG_USB_HIDDEV=y
+CONFIG_I2C_HID_ACPI=m
+CONFIG_I2C_HID_OF=m
+CONFIG_I2C_HID_OF_ELAN=m
 CONFIG_USB=y
 CONFIG_USB_OTG=y
 CONFIG_USB_MON=y
@@ -852,6 +922,9 @@ CONFIG_F2FS_FS=m
 CONFIG_F2FS_FS_SECURITY=y
 CONFIG_F2FS_CHECK_FS=y
 CONFIG_F2FS_FS_COMPRESSION=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_INLINE_CRYPT=y
+CONFIG_FS_VERITY=y
 CONFIG_FANOTIFY=y
 CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
 CONFIG_QUOTA=y
@@ -904,16 +977,14 @@ CONFIG_SQUASHFS_ZSTD=y
 CONFIG_MINIX_FS=m
 CONFIG_ROMFS_FS=m
 CONFIG_PSTORE=m
-CONFIG_PSTORE_LZO_COMPRESS=m
-CONFIG_PSTORE_LZ4_COMPRESS=m
-CONFIG_PSTORE_LZ4HC_COMPRESS=m
-CONFIG_PSTORE_842_COMPRESS=y
-CONFIG_PSTORE_ZSTD_COMPRESS=y
-CONFIG_PSTORE_ZSTD_COMPRESS_DEFAULT=y
+CONFIG_PSTORE_COMPRESS=y
 CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_EROFS_FS_ZIP_LZMA=y
+CONFIG_EROFS_FS_ZIP_DEFLATE=y
+CONFIG_EROFS_FS_ZIP_ZSTD=y
+CONFIG_EROFS_FS_ONDEMAND=y
 CONFIG_EROFS_FS_PCPU_KTHREAD=y
 CONFIG_NFS_FS=y
 CONFIG_NFS_V3_ACL=y

arch/loongarch/include/asm/thread_info.h

@@ -66,8 +66,9 @@ register unsigned long current_stack_pointer __asm__("$sp");
  * - pending work-to-be-done flags are in LSW
  * - other flags in MSW
  */
-#define TIF_SIGPENDING		1	/* signal pending */
-#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
+#define TIF_NEED_RESCHED	0	/* rescheduling necessary */
+#define TIF_NEED_RESCHED_LAZY	1	/* lazy rescheduling necessary */
+#define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NOTIFY_RESUME	3	/* callback before returning to user */
 #define TIF_NOTIFY_SIGNAL	4	/* signal notifications exist */
 #define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */
@@ -88,8 +89,9 @@ register unsigned long current_stack_pointer __asm__("$sp");
 #define TIF_LBT_CTX_LIVE	20	/* LBT context must be preserved */
 #define TIF_PATCH_PENDING	21	/* pending live patching update */
 
-#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_NEED_RESCHED_LAZY	(1<<TIF_NEED_RESCHED_LAZY)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
 #define _TIF_NOTIFY_SIGNAL	(1<<TIF_NOTIFY_SIGNAL)
 #define _TIF_NOHZ		(1<<TIF_NOHZ)

arch/loongarch/kernel/time.c

@@ -127,7 +127,11 @@ void sync_counter(void)
 int constant_clockevent_init(void)
 {
 	unsigned int cpu = smp_processor_id();
-	unsigned long min_delta = 0x600;
+#ifdef CONFIG_PREEMPT_RT
+	unsigned long min_delta = 100;
+#else
+	unsigned long min_delta = 1000;
+#endif
 	unsigned long max_delta = (1UL << 48) - 1;
 	struct clock_event_device *cd;
 	static int irq = 0, timer_irq_installed = 0;