diff options
Diffstat (limited to 'arch/loongarch')
60 files changed, 1076 insertions, 222 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index a5f300ec6f28..e38139c576ee 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -16,8 +16,10 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_KCOV + 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_PTE_SPECIAL @@ -56,6 +58,7 @@ config LOONGARCH select ARCH_SUPPORTS_ACPI select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_HUGETLBFS + select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 select ARCH_SUPPORTS_LTO_CLANG select ARCH_SUPPORTS_LTO_CLANG_THIN select ARCH_SUPPORTS_NUMA_BALANCING @@ -63,10 +66,12 @@ config LOONGARCH select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS + select ARCH_WANT_DEFAULT_BPF_JIT select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP select ARCH_WANTS_NO_INSTR + select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE select BUILDTIME_TABLE_SORT select COMMON_CLK select CPU_PM @@ -119,7 +124,7 @@ config LOONGARCH select HAVE_EBPF_JIT select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN select HAVE_EXIT_THREAD - select HAVE_FAST_GUP + select HAVE_GUP_FAST select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_ARG_ACCESS_API select HAVE_FUNCTION_ERROR_INJECTION @@ -174,7 +179,6 @@ config LOONGARCH select PCI_QUIRKS select PERF_USE_VMALLOC select RTC_LIB - select SMP select SPARSE_IRQ select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_ARCH_UNALIGN_NO_WARN @@ -420,6 +424,7 @@ config EFI_STUB config SCHED_SMT bool "SMT scheduler support" + depends on SMP default y help Improves scheduler's performance when there are multiple @@ -595,7 +600,7 @@ config ARCH_SELECTS_CRASH_DUMP select RELOCATABLE config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION - def_bool CRASH_CORE + def_bool CRASH_RESERVE config RELOCATABLE bool "Relocatable kernel" @@ -632,6 +637,15 @@ config RANDOMIZE_BASE_MAX_OFFSET source "kernel/livepatch/Kconfig" +config PARAVIRT + bool "Enable paravirtualization code" + depends on AS_HAS_LVZ_EXTENSION + help + This changes the kernel so it can modify itself when it is run + under a hypervisor, potentially improving performance significantly + over full virtualization. However, when run without a hypervisor + the kernel is theoretically slower and slightly larger. + endmenu config ARCH_SELECT_MEMORY_MODEL diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile index df6caf79537a..8674e7e24c4a 100644 --- a/arch/loongarch/Makefile +++ b/arch/loongarch/Makefile @@ -26,6 +26,9 @@ endif 32bit-emul = elf32loongarch 64bit-emul = elf64loongarch +CC_FLAGS_FPU := -mfpu=64 +CC_FLAGS_NO_FPU := -msoft-float + ifdef CONFIG_UNWINDER_ORC orc_hash_h := arch/$(SRCARCH)/include/generated/asm/orc_hash.h orc_hash_sh := $(srctree)/scripts/orc_hash.sh @@ -59,7 +62,7 @@ ld-emul = $(64bit-emul) cflags-y += -mabi=lp64s endif -cflags-y += -pipe -msoft-float +cflags-y += -pipe $(CC_FLAGS_NO_FPU) LDFLAGS_vmlinux += -static -n -nostdlib # When the assembler supports explicit relocation hint, we must use it. @@ -101,7 +104,7 @@ ifdef CONFIG_OBJTOOL KBUILD_CFLAGS += -fno-jump-tables endif -KBUILD_RUSTFLAGS += --target=$(objtree)/scripts/target.json +KBUILD_RUSTFLAGS += --target=loongarch64-unknown-none-softfloat KBUILD_RUSTFLAGS_MODULE += -Crelocation-model=pic ifeq ($(CONFIG_RELOCATABLE),y) diff --git a/arch/loongarch/boot/dts/loongson-2k0500-ref.dts b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts index 8aefb0c12672..a34734a6c3ce 100644 --- a/arch/loongarch/boot/dts/loongson-2k0500-ref.dts +++ b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts @@ -44,14 +44,14 @@ &gmac0 { status = "okay"; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; bus_id = <0x0>; }; &gmac1 { status = "okay"; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; bus_id = <0x1>; }; diff --git a/arch/loongarch/boot/dts/loongson-2k0500.dtsi b/arch/loongarch/boot/dts/loongson-2k0500.dtsi index 444779c21034..3b38ff8853a7 100644 --- a/arch/loongarch/boot/dts/loongson-2k0500.dtsi +++ b/arch/loongarch/boot/dts/loongson-2k0500.dtsi @@ -6,6 +6,7 @@ /dts-v1/; #include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/clock/loongson,ls2k-clk.h> / { #address-cells = <2>; @@ -19,14 +20,15 @@ compatible = "loongson,la264"; device_type = "cpu"; reg = <0x0>; - clocks = <&cpu_clk>; + clocks = <&clk LOONGSON2_NODE_CLK>; }; }; - cpu_clk: cpu-clk { + ref_100m: clock-ref-100m { compatible = "fixed-clock"; #clock-cells = <0>; - clock-frequency = <500000000>; + clock-frequency = <100000000>; + clock-output-names = "ref_100m"; }; cpuintc: interrupt-controller { @@ -35,6 +37,28 @@ interrupt-controller; }; + thermal-zones { + cpu-thermal { + polling-delay-passive = <1000>; + polling-delay = <5000>; + thermal-sensors = <&tsensor 0>; + + trips { + cpu-alert { + temperature = <33000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu-crit { + temperature = <85000>; + hysteresis = <5000>; + type = "critical"; + }; + }; + }; + }; + bus@10000000 { compatible = "simple-bus"; ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x10000000>, @@ -52,6 +76,54 @@ ranges = <1 0x0 0x0 0x16400000 0x4000>; }; + clk: clock-controller@1fe10400 { + compatible = "loongson,ls2k0500-clk"; + reg = <0x0 0x1fe10400 0x0 0x2c>; + #clock-cells = <1>; + clocks = <&ref_100m>; + clock-names = "ref_100m"; + }; + + dma-controller@1fe10c00 { + compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma"; + reg = <0 0x1fe10c00 0 0x8>; + interrupt-parent = <&eiointc>; + interrupts = <67>; + clocks = <&clk LOONGSON2_APB_CLK>; + #dma-cells = <1>; + status = "disabled"; + }; + + dma-controller@1fe10c10 { + compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma"; + reg = <0 0x1fe10c10 0 0x8>; + interrupt-parent = <&eiointc>; + interrupts = <68>; + clocks = <&clk LOONGSON2_APB_CLK>; + #dma-cells = <1>; + status = "disabled"; + }; + + dma-controller@1fe10c20 { + compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma"; + reg = <0 0x1fe10c20 0 0x8>; + interrupt-parent = <&eiointc>; + interrupts = <69>; + clocks = <&clk LOONGSON2_APB_CLK>; + #dma-cells = <1>; + status = "disabled"; + }; + + dma-controller@1fe10c30 { + compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma"; + reg = <0 0x1fe10c30 0 0x8>; + interrupt-parent = <&eiointc>; + interrupts = <70>; + clocks = <&clk LOONGSON2_APB_CLK>; + #dma-cells = <1>; + status = "disabled"; + }; + liointc0: interrupt-controller@1fe11400 { compatible = "loongson,liointc-2.0"; reg = <0x0 0x1fe11400 0x0 0x40>, @@ -139,6 +211,14 @@ status = "disabled"; }; + tsensor: thermal-sensor@1fe11500 { + compatible = "loongson,ls2k0500-thermal", "loongson,ls2k1000-thermal"; + reg = <0x0 0x1fe11500 0x0 0x30>; + interrupt-parent = <&liointc0>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + #thermal-sensor-cells = <1>; + }; + uart0: serial@1ff40800 { compatible = "ns16550a"; reg = <0x0 0x1ff40800 0x0 0x10>; diff --git a/arch/loongarch/boot/dts/loongson-2k1000-ref.dts b/arch/loongarch/boot/dts/loongson-2k1000-ref.dts index ed4d32434041..23cf26cc3e5f 100644 --- a/arch/loongarch/boot/dts/loongson-2k1000-ref.dts +++ b/arch/loongarch/boot/dts/loongson-2k1000-ref.dts @@ -43,7 +43,7 @@ &gmac0 { status = "okay"; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <&phy0>; mdio { compatible = "snps,dwmac-mdio"; @@ -58,7 +58,7 @@ &gmac1 { status = "okay"; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <&phy1>; mdio { compatible = "snps,dwmac-mdio"; @@ -113,10 +113,6 @@ status = "okay"; }; -&clk { - status = "okay"; -}; - &rtc0 { status = "okay"; }; diff --git a/arch/loongarch/boot/dts/loongson-2k1000.dtsi b/arch/loongarch/boot/dts/loongson-2k1000.dtsi index b6aeb1f70e2a..92180140eb56 100644 --- a/arch/loongarch/boot/dts/loongson-2k1000.dtsi +++ b/arch/loongarch/boot/dts/loongson-2k1000.dtsi @@ -159,7 +159,6 @@ #clock-cells = <1>; clocks = <&ref_100m>; clock-names = "ref_100m"; - status = "disabled"; }; gpio0: gpio@1fe00500 { diff --git a/arch/loongarch/boot/dts/loongson-2k2000-ref.dts b/arch/loongarch/boot/dts/loongson-2k2000-ref.dts index 74b99bd234cc..ea9e6985d0e9 100644 --- a/arch/loongarch/boot/dts/loongson-2k2000-ref.dts +++ b/arch/loongarch/boot/dts/loongson-2k2000-ref.dts @@ -92,7 +92,7 @@ &gmac2 { status = "okay"; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <&phy2>; mdio { compatible = "snps,dwmac-mdio"; diff --git a/arch/loongarch/boot/dts/loongson-2k2000.dtsi b/arch/loongarch/boot/dts/loongson-2k2000.dtsi index 9eab2d02cbe8..0953c5707825 100644 --- a/arch/loongarch/boot/dts/loongson-2k2000.dtsi +++ b/arch/loongarch/boot/dts/loongson-2k2000.dtsi @@ -6,6 +6,7 @@ /dts-v1/; #include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/clock/loongson,ls2k-clk.h> / { #address-cells = <2>; @@ -19,21 +20,22 @@ compatible = "loongson,la364"; device_type = "cpu"; reg = <0x0>; - clocks = <&cpu_clk>; + clocks = <&clk LOONGSON2_NODE_CLK>; }; cpu1: cpu@2 { compatible = "loongson,la364"; device_type = "cpu"; reg = <0x1>; - clocks = <&cpu_clk>; + clocks = <&clk LOONGSON2_NODE_CLK>; }; }; - cpu_clk: cpu-clk { + ref_100m: clock-ref-100m { compatible = "fixed-clock"; #clock-cells = <0>; - clock-frequency = <1400000000>; + clock-frequency = <100000000>; + clock-output-names = "ref_100m"; }; cpuintc: interrupt-controller { @@ -42,6 +44,28 @@ interrupt-controller; }; + thermal-zones { + cpu-thermal { + polling-delay-passive = <1000>; + polling-delay = <5000>; + thermal-sensors = <&tsensor 0>; + + trips { + cpu-alert { + temperature = <40000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu-crit { + temperature = <85000>; + hysteresis = <5000>; + type = "critical"; + }; + }; + }; + }; + bus@10000000 { compatible = "simple-bus"; ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x10000000>, @@ -58,6 +82,14 @@ ranges = <1 0x0 0x0 0x18400000 0x4000>; }; + clk: clock-controller@10010480 { + compatible = "loongson,ls2k2000-clk"; + reg = <0x0 0x10010480 0x0 0x100>; + #clock-cells = <1>; + clocks = <&ref_100m>; + clock-names = "ref_100m"; + }; + pmc: power-management@100d0000 { compatible = "loongson,ls2k2000-pmc", "loongson,ls2k0500-pmc", "syscon"; reg = <0x0 0x100d0000 0x0 0x58>; @@ -80,6 +112,15 @@ }; }; + tsensor: thermal-sensor@1fe01460 { + compatible = "loongson,ls2k2000-thermal"; + reg = <0x0 0x1fe01460 0x0 0x30>, + <0x0 0x1fe0019c 0x0 0x4>; + interrupt-parent = <&liointc>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + #thermal-sensor-cells = <1>; + }; + liointc: interrupt-controller@1fe01400 { compatible = "loongson,liointc-1.0"; reg = <0x0 0x1fe01400 0x0 0x64>; diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/configs/loongson3_defconfig index f18c2ba871ef..b4252c357c8e 100644 --- a/arch/loongarch/configs/loongson3_defconfig +++ b/arch/loongarch/configs/loongson3_defconfig @@ -14,6 +14,10 @@ CONFIG_TASKSTATS=y CONFIG_TASK_DELAY_ACCT=y CONFIG_TASK_XACCT=y CONFIG_TASK_IO_ACCOUNTING=y +CONFIG_PSI=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_IKHEADERS=y CONFIG_LOG_BUF_SHIFT=18 CONFIG_NUMA_BALANCING=y CONFIG_MEMCG=y @@ -76,7 +80,6 @@ CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_BLK_DEV_ZONED=y CONFIG_BLK_DEV_THROTTLING=y -CONFIG_BLK_DEV_THROTTLING_LOW=y CONFIG_BLK_WBT=y CONFIG_BLK_CGROUP_IOLATENCY=y CONFIG_BLK_CGROUP_FC_APPID=y @@ -130,13 +133,22 @@ CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y +CONFIG_INET_AH=m CONFIG_INET_ESP=m +CONFIG_INET_ESP_OFFLOAD=m +CONFIG_INET_ESPINTCP=y +CONFIG_INET_IPCOMP=m CONFIG_INET_UDP_DIAG=y CONFIG_TCP_CONG_ADVANCED=y CONFIG_TCP_CONG_BBR=m CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_ROUTE_INFO=y +CONFIG_INET6_AH=m CONFIG_INET6_ESP=m +CONFIG_INET6_ESP_OFFLOAD=m +CONFIG_INET6_ESPINTCP=y +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IPV6_MROUTE=y CONFIG_MPTCP=y CONFIG_NETWORK_PHY_TIMESTAMPING=y @@ -152,6 +164,8 @@ CONFIG_NF_CONNTRACK_PPTP=m CONFIG_NF_CONNTRACK_TFTP=m CONFIG_NF_CT_NETLINK=m CONFIG_NF_TABLES=m +CONFIG_NF_TABLES_INET=y +CONFIG_NFT_CT=m CONFIG_NFT_CONNLIMIT=m CONFIG_NFT_LOG=m CONFIG_NFT_LIMIT=m @@ -164,6 +178,7 @@ CONFIG_NFT_QUOTA=m CONFIG_NFT_REJECT=m CONFIG_NFT_COMPAT=m CONFIG_NFT_HASH=m +CONFIG_NFT_FIB_INET=m CONFIG_NFT_SOCKET=m CONFIG_NFT_OSF=m CONFIG_NFT_TPROXY=m @@ -260,6 +275,7 @@ CONFIG_IP_NF_ARPTABLES=m CONFIG_IP_NF_ARPFILTER=m CONFIG_IP_NF_ARP_MANGLE=m CONFIG_NF_TABLES_IPV6=y +CONFIG_NFT_FIB_IPV6=m CONFIG_IP6_NF_IPTABLES=y CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m @@ -280,6 +296,7 @@ CONFIG_IP6_NF_NAT=m CONFIG_IP6_NF_TARGET_MASQUERADE=m CONFIG_IP6_NF_TARGET_NPT=m CONFIG_NF_TABLES_BRIDGE=m +CONFIG_NF_CONNTRACK_BRIDGE=m CONFIG_BRIDGE_NF_EBTABLES=m CONFIG_BRIDGE_EBT_BROUTE=m CONFIG_BRIDGE_EBT_T_FILTER=m @@ -550,6 +567,7 @@ CONFIG_NGBE=y CONFIG_TXGBE=y # CONFIG_NET_VENDOR_WIZNET is not set # CONFIG_NET_VENDOR_XILINX is not set +CONFIG_MOTORCOMM_PHY=y CONFIG_PPP=m CONFIG_PPP_BSDCOMP=m CONFIG_PPP_DEFLATE=m @@ -811,6 +829,7 @@ CONFIG_NTB_SWITCHTEC=m CONFIG_NTB_PERF=m CONFIG_NTB_TRANSPORT=m CONFIG_PWM=y +CONFIG_GENERIC_PHY=y CONFIG_USB4=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y @@ -876,10 +895,13 @@ CONFIG_UBIFS_FS=m CONFIG_UBIFS_FS_ADVANCED_COMPR=y CONFIG_CRAMFS=m CONFIG_SQUASHFS=y +CONFIG_SQUASHFS_FILE_DIRECT=y +CONFIG_SQUASHFS_CHOICE_DECOMP_BY_MOUNT=y CONFIG_SQUASHFS_XATTR=y CONFIG_SQUASHFS_LZ4=y CONFIG_SQUASHFS_LZO=y CONFIG_SQUASHFS_XZ=y +CONFIG_SQUASHFS_ZSTD=y CONFIG_MINIX_FS=m CONFIG_ROMFS_FS=m CONFIG_PSTORE=m @@ -961,3 +983,4 @@ CONFIG_DEBUG_FS=y CONFIG_SCHEDSTATS=y # CONFIG_DEBUG_PREEMPT is not set # CONFIG_FTRACE is not set +CONFIG_UNWINDER_ORC=y diff --git a/arch/loongarch/include/asm/Kbuild b/arch/loongarch/include/asm/Kbuild index 2dbec7853ae8..c862672ed953 100644 --- a/arch/loongarch/include/asm/Kbuild +++ b/arch/loongarch/include/asm/Kbuild @@ -26,4 +26,3 @@ generic-y += poll.h generic-y += param.h generic-y += posix_types.h generic-y += resource.h -generic-y += kvm_para.h diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h index 49e29b29996f..313f66f7913a 100644 --- a/arch/loongarch/include/asm/acpi.h +++ b/arch/loongarch/include/asm/acpi.h @@ -8,6 +8,7 @@ #ifndef _ASM_LOONGARCH_ACPI_H #define _ASM_LOONGARCH_ACPI_H +#include <asm/smp.h> #include <asm/suspend.h> #ifdef CONFIG_ACPI diff --git a/arch/loongarch/include/asm/asm-prototypes.h b/arch/loongarch/include/asm/asm-prototypes.h index cf8e1a4e7c19..51f224bcfc65 100644 --- a/arch/loongarch/include/asm/asm-prototypes.h +++ b/arch/loongarch/include/asm/asm-prototypes.h @@ -6,3 +6,9 @@ #include <asm/page.h> #include <asm/ftrace.h> #include <asm-generic/asm-prototypes.h> + +#ifdef CONFIG_ARCH_SUPPORTS_INT128 +__int128_t __ashlti3(__int128_t a, int b); +__int128_t __ashrti3(__int128_t a, int b); +__int128_t __lshrti3(__int128_t a, int b); +#endif diff --git a/arch/loongarch/include/asm/crash_core.h b/arch/loongarch/include/asm/crash_reserve.h index 218bdbfa527b..a1d9b84b1c7d 100644 --- a/arch/loongarch/include/asm/crash_core.h +++ b/arch/loongarch/include/asm/crash_reserve.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#ifndef _LOONGARCH_CRASH_CORE_H -#define _LOONGARCH_CRASH_CORE_H +#ifndef _LOONGARCH_CRASH_RESERVE_H +#define _LOONGARCH_CRASH_RESERVE_H #define CRASH_ALIGN SZ_2M diff --git a/arch/loongarch/include/asm/fpu.h b/arch/loongarch/include/asm/fpu.h index c2d8962fda00..3177674228f8 100644 --- a/arch/loongarch/include/asm/fpu.h +++ b/arch/loongarch/include/asm/fpu.h @@ -21,6 +21,7 @@ struct sigcontext; +#define kernel_fpu_available() cpu_has_fpu extern void kernel_fpu_begin(void); extern void kernel_fpu_end(void); diff --git a/arch/loongarch/include/asm/hardirq.h b/arch/loongarch/include/asm/hardirq.h index 0ef3b18f8980..d41138abcf26 100644 --- a/arch/loongarch/include/asm/hardirq.h +++ b/arch/loongarch/include/asm/hardirq.h @@ -14,9 +14,15 @@ extern void ack_bad_irq(unsigned int irq); #define NR_IPI 2 +enum ipi_msg_type { + IPI_RESCHEDULE, + IPI_CALL_FUNCTION, +}; + typedef struct { unsigned int ipi_irqs[NR_IPI]; unsigned int __softirq_pending; + atomic_t message ____cacheline_aligned_in_smp; } ____cacheline_aligned irq_cpustat_t; DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat); diff --git a/arch/loongarch/include/asm/inst.h b/arch/loongarch/include/asm/inst.h index d8f637f9e400..c3993fd88aba 100644 --- a/arch/loongarch/include/asm/inst.h +++ b/arch/loongarch/include/asm/inst.h @@ -12,6 +12,7 @@ #define INSN_NOP 0x03400000 #define INSN_BREAK 0x002a0000 +#define INSN_HVCL 0x002b8000 #define ADDR_IMMMASK_LU52ID 0xFFF0000000000000 #define ADDR_IMMMASK_LU32ID 0x000FFFFF00000000 @@ -67,6 +68,7 @@ enum reg2_op { revhd_op = 0x11, extwh_op = 0x16, extwb_op = 0x17, + cpucfg_op = 0x1b, iocsrrdb_op = 0x19200, iocsrrdh_op = 0x19201, iocsrrdw_op = 0x19202, diff --git a/arch/loongarch/include/asm/irq.h b/arch/loongarch/include/asm/irq.h index 218b4da0ea90..480418bc5071 100644 --- a/arch/loongarch/include/asm/irq.h +++ b/arch/loongarch/include/asm/irq.h @@ -117,7 +117,16 @@ extern struct fwnode_handle *liointc_handle; extern struct fwnode_handle *pch_lpc_handle; extern struct fwnode_handle *pch_pic_handle[MAX_IO_PICS]; -extern irqreturn_t loongson_ipi_interrupt(int irq, void *dev); +static inline int get_percpu_irq(int vector) +{ + struct irq_domain *d; + + d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY); + if (d) + return irq_create_mapping(d, vector); + + return -EINVAL; +} #include <asm-generic/irq.h> diff --git a/arch/loongarch/include/asm/kfence.h b/arch/loongarch/include/asm/kfence.h index a6a5760da3a3..92636e82957c 100644 --- a/arch/loongarch/include/asm/kfence.h +++ b/arch/loongarch/include/asm/kfence.h @@ -10,6 +10,7 @@ #define _ASM_LOONGARCH_KFENCE_H #include <linux/kfence.h> +#include <linux/vmalloc.h> #include <asm/pgtable.h> #include <asm/tlb.h> diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h index 2d62f7b0d377..c87b6ea0ec47 100644 --- a/arch/loongarch/include/asm/kvm_host.h +++ b/arch/loongarch/include/asm/kvm_host.h @@ -31,6 +31,11 @@ #define KVM_HALT_POLL_NS_DEFAULT 500000 +#define KVM_GUESTDBG_SW_BP_MASK \ + (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP) +#define KVM_GUESTDBG_VALID_MASK \ + (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP | KVM_GUESTDBG_SINGLESTEP) + struct kvm_vm_stat { struct kvm_vm_stat_generic generic; u64 pages; @@ -43,6 +48,7 @@ struct kvm_vcpu_stat { u64 idle_exits; u64 cpucfg_exits; u64 signal_exits; + u64 hypercall_exits; }; #define KVM_MEM_HUGEPAGE_CAPABLE (1UL << 0) @@ -64,6 +70,31 @@ struct kvm_world_switch { #define MAX_PGTABLE_LEVELS 4 +/* + * Physical CPUID is used for interrupt routing, there are different + * definitions about physical cpuid on different hardwares. + * + * For LOONGARCH_CSR_CPUID register, max CPUID size if 512 + * For IPI hardware, max destination CPUID size 1024 + * For extioi interrupt controller, max destination CPUID size is 256 + * For msgint interrupt controller, max supported CPUID size is 65536 + * + * Currently max CPUID is defined as 256 for KVM hypervisor, in future + * it will be expanded to 4096, including 16 packages at most. And every + * package supports at most 256 vcpus + */ +#define KVM_MAX_PHYID 256 + +struct kvm_phyid_info { + struct kvm_vcpu *vcpu; + bool enabled; +}; + +struct kvm_phyid_map { + int max_phyid; + struct kvm_phyid_info phys_map[KVM_MAX_PHYID]; +}; + struct kvm_arch { /* Guest physical mm */ kvm_pte_t *pgd; @@ -71,6 +102,8 @@ struct kvm_arch { unsigned long invalid_ptes[MAX_PGTABLE_LEVELS]; unsigned int pte_shifts[MAX_PGTABLE_LEVELS]; unsigned int root_level; + spinlock_t phyid_map_lock; + struct kvm_phyid_map *phyid_map; s64 time_offset; struct kvm_context __percpu *vmcs; @@ -203,7 +236,6 @@ void kvm_flush_tlb_all(void); void kvm_flush_tlb_gpa(struct kvm_vcpu *vcpu, unsigned long gpa); int kvm_handle_mm_fault(struct kvm_vcpu *vcpu, unsigned long badv, bool write); -void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end, bool blockable); int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); diff --git a/arch/loongarch/include/asm/kvm_para.h b/arch/loongarch/include/asm/kvm_para.h new file mode 100644 index 000000000000..4ba2312e5f8c --- /dev/null +++ b/arch/loongarch/include/asm/kvm_para.h @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_LOONGARCH_KVM_PARA_H +#define _ASM_LOONGARCH_KVM_PARA_H + +/* + * Hypercall code field + */ +#define HYPERVISOR_KVM 1 +#define HYPERVISOR_VENDOR_SHIFT 8 +#define HYPERCALL_ENCODE(vendor, code) ((vendor << HYPERVISOR_VENDOR_SHIFT) + code) + +#define KVM_HCALL_CODE_SERVICE 0 +#define KVM_HCALL_CODE_SWDBG 1 + +#define KVM_HCALL_SERVICE HYPERCALL_ENCODE(HYPERVISOR_KVM, KVM_HCALL_CODE_SERVICE) +#define KVM_HCALL_FUNC_IPI 1 + +#define KVM_HCALL_SWDBG HYPERCALL_ENCODE(HYPERVISOR_KVM, KVM_HCALL_CODE_SWDBG) + +/* + * LoongArch hypercall return code + */ +#define KVM_HCALL_SUCCESS 0 +#define KVM_HCALL_INVALID_CODE -1UL +#define KVM_HCALL_INVALID_PARAMETER -2UL + +/* + * Hypercall interface for KVM hypervisor + * + * a0: function identifier + * a1-a6: args + * Return value will be placed in a0. + * Up to 6 arguments are passed in a1, a2, a3, a4, a5, a6. + */ +static __always_inline long kvm_hypercall0(u64 fid) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r" (fun) + : "memory" + ); + + return ret; +} + +static __always_inline long kvm_hypercall1(u64 fid, unsigned long arg0) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + register unsigned long a1 asm("a1") = arg0; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r" (fun), "r" (a1) + : "memory" + ); + + return ret; +} + +static __always_inline long kvm_hypercall2(u64 fid, + unsigned long arg0, unsigned long arg1) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + register unsigned long a1 asm("a1") = arg0; + register unsigned long a2 asm("a2") = arg1; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r" (fun), "r" (a1), "r" (a2) + : "memory" + ); + + return ret; +} + +static __always_inline long kvm_hypercall3(u64 fid, + unsigned long arg0, unsigned long arg1, unsigned long arg2) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + register unsigned long a1 asm("a1") = arg0; + register unsigned long a2 asm("a2") = arg1; + register unsigned long a3 asm("a3") = arg2; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r" (fun), "r" (a1), "r" (a2), "r" (a3) + : "memory" + ); + + return ret; +} + +static __always_inline long kvm_hypercall4(u64 fid, + unsigned long arg0, unsigned long arg1, + unsigned long arg2, unsigned long arg3) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + register unsigned long a1 asm("a1") = arg0; + register unsigned long a2 asm("a2") = arg1; + register unsigned long a3 asm("a3") = arg2; + register unsigned long a4 asm("a4") = arg3; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r"(fun), "r" (a1), "r" (a2), "r" (a3), "r" (a4) + : "memory" + ); + + return ret; +} + +static __always_inline long kvm_hypercall5(u64 fid, + unsigned long arg0, unsigned long arg1, + unsigned long arg2, unsigned long arg3, unsigned long arg4) +{ + register long ret asm("a0"); + register unsigned long fun asm("a0") = fid; + register unsigned long a1 asm("a1") = arg0; + register unsigned long a2 asm("a2") = arg1; + register unsigned long a3 asm("a3") = arg2; + register unsigned long a4 asm("a4") = arg3; + register unsigned long a5 asm("a5") = arg4; + + __asm__ __volatile__( + "hvcl "__stringify(KVM_HCALL_SERVICE) + : "=r" (ret) + : "r"(fun), "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5) + : "memory" + ); + + return ret; +} + +static inline unsigned int kvm_arch_para_features(void) +{ + return 0; +} + +static inline unsigned int kvm_arch_para_hints(void) +{ + return 0; +} + +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + +#endif /* _ASM_LOONGARCH_KVM_PARA_H */ diff --git a/arch/loongarch/include/asm/kvm_vcpu.h b/arch/loongarch/include/asm/kvm_vcpu.h index 0cb4fdb8a9b5..590a92cb5416 100644 --- a/arch/loongarch/include/asm/kvm_vcpu.h +++ b/arch/loongarch/include/asm/kvm_vcpu.h @@ -81,6 +81,7 @@ void kvm_save_timer(struct kvm_vcpu *vcpu); void kvm_restore_timer(struct kvm_vcpu *vcpu); int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); +struct kvm_vcpu *kvm_get_vcpu_by_cpuid(struct kvm *kvm, int cpuid); /* * Loongarch KVM guest interrupt handling @@ -109,4 +110,14 @@ static inline int kvm_queue_exception(struct kvm_vcpu *vcpu, return -1; } +static inline unsigned long kvm_read_reg(struct kvm_vcpu *vcpu, int num) +{ + return vcpu->arch.gprs[num]; +} + +static inline void kvm_write_reg(struct kvm_vcpu *vcpu, int num, unsigned long val) +{ + vcpu->arch.gprs[num] = val; +} + #endif /* __ASM_LOONGARCH_KVM_VCPU_H__ */ diff --git a/arch/loongarch/include/asm/loongarch.h b/arch/loongarch/include/asm/loongarch.h index 46366e783c84..eb09adda54b7 100644 --- a/arch/loongarch/include/asm/loongarch.h +++ b/arch/loongarch/include/asm/loongarch.h @@ -158,6 +158,18 @@ #define CPUCFG48_VFPU_CG BIT(2) #define CPUCFG48_RAM_CG BIT(3) +/* + * CPUCFG index area: 0x40000000 -- 0x400000ff + * SW emulation for KVM hypervirsor + */ +#define CPUCFG_KVM_BASE 0x40000000 +#define CPUCFG_KVM_SIZE 0x100 + +#define CPUCFG_KVM_SIG (CPUCFG_KVM_BASE + 0) +#define KVM_SIGNATURE "KVM\0" +#define CPUCFG_KVM_FEATURE (CPUCFG_KVM_BASE + 4) +#define KVM_FEATURE_IPI BIT(1) + #ifndef __ASSEMBLY__ /* CSR */ diff --git a/arch/loongarch/include/asm/numa.h b/arch/loongarch/include/asm/numa.h index 27f319b49862..b5f9de9f102e 100644 --- a/arch/loongarch/include/asm/numa.h +++ b/arch/loongarch/include/asm/numa.h @@ -56,6 +56,7 @@ extern int early_cpu_to_node(int cpu); static inline void early_numa_add_cpu(int cpuid, s16 node) { } static inline void numa_add_cpu(unsigned int cpu) { } static inline void numa_remove_cpu(unsigned int cpu) { } +static inline void set_cpuid_to_node(int cpuid, s16 node) { } static inline int early_cpu_to_node(int cpu) { diff --git a/arch/loongarch/include/asm/paravirt.h b/arch/loongarch/include/asm/paravirt.h new file mode 100644 index 000000000000..0965710f47f2 --- /dev/null +++ b/arch/loongarch/include/asm/paravirt.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_LOONGARCH_PARAVIRT_H +#define _ASM_LOONGARCH_PARAVIRT_H + +#ifdef CONFIG_PARAVIRT + +#include <linux/static_call_types.h> +struct static_key; +extern struct static_key paravirt_steal_enabled; +extern struct static_key paravirt_steal_rq_enabled; + +u64 dummy_steal_clock(int cpu); +DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock); + +static inline u64 paravirt_steal_clock(int cpu) +{ + return static_call(pv_steal_clock)(cpu); +} + +int __init pv_ipi_init(void); + +#else + +static inline int pv_ipi_init(void) +{ + return 0; +} + +#endif // CONFIG_PARAVIRT +#endif diff --git a/arch/loongarch/include/asm/paravirt_api_clock.h b/arch/loongarch/include/asm/paravirt_api_clock.h new file mode 100644 index 000000000000..65ac7cee0dad --- /dev/null +++ b/arch/loongarch/include/asm/paravirt_api_clock.h @@ -0,0 +1 @@ +#include <asm/paravirt.h> diff --git a/arch/loongarch/include/asm/perf_event.h b/arch/loongarch/include/asm/perf_event.h index 2a35a0bc2aaa..f948a0676daf 100644 --- a/arch/loongarch/include/asm/perf_event.h +++ b/arch/loongarch/include/asm/perf_event.h @@ -7,6 +7,13 @@ #ifndef __LOONGARCH_PERF_EVENT_H__ #define __LOONGARCH_PERF_EVENT_H__ +#include <asm/ptrace.h> + #define perf_arch_bpf_user_pt_regs(regs) (struct user_pt_regs *)regs +#define perf_arch_fetch_caller_regs(regs, __ip) { \ + (regs)->csr_era = (__ip); \ + (regs)->regs[3] = (unsigned long) __builtin_frame_address(0); \ +} + #endif /* __LOONGARCH_PERF_EVENT_H__ */ diff --git a/arch/loongarch/include/asm/smp.h b/arch/loongarch/include/asm/smp.h index f81e5f01d619..278700cfee88 100644 --- a/arch/loongarch/include/asm/smp.h +++ b/arch/loongarch/include/asm/smp.h @@ -6,12 +6,21 @@ #ifndef __ASM_SMP_H #define __ASM_SMP_H +#ifdef CONFIG_SMP + #include <linux/atomic.h> #include <linux/bitops.h> #include <linux/linkage.h> #include <linux/threads.h> #include <linux/cpumask.h> +struct smp_ops { + void (*init_ipi)(void); + void (*send_ipi_single)(int cpu, unsigned int action); + void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action); +}; +extern struct smp_ops mp_ops; + extern int smp_num_siblings; extern int num_processors; extern int disabled_cpus; @@ -24,8 +33,6 @@ void loongson_prepare_cpus(unsigned int max_cpus); void loongson_boot_secondary(int cpu, struct task_struct *idle); void loongson_init_secondary(void); void loongson_smp_finish(void); -void loongson_send_ipi_single(int cpu, unsigned int action); -void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action); #ifdef CONFIG_HOTPLUG_CPU int loongson_cpu_disable(void); void loongson_cpu_die(unsigned int cpu); @@ -59,9 +66,12 @@ extern int __cpu_logical_map[NR_CPUS]; #define cpu_physical_id(cpu) cpu_logical_map(cpu) -#define SMP_BOOT_CPU 0x1 -#define SMP_RESCHEDULE 0x2 -#define SMP_CALL_FUNCTION 0x4 +#define ACTION_BOOT_CPU 0 +#define ACTION_RESCHEDULE 1 +#define ACTION_CALL_FUNCTION 2 +#define SMP_BOOT_CPU BIT(ACTION_BOOT_CPU) +#define SMP_RESCHEDULE BIT(ACTION_RESCHEDULE) +#define SMP_CALL_FUNCTION BIT(ACTION_CALL_FUNCTION) struct secondary_data { unsigned long stack; @@ -81,12 +91,12 @@ extern void show_ipi_list(struct seq_file *p, int prec); static inline void arch_send_call_function_single_ipi(int cpu) { - loongson_send_ipi_single(cpu, SMP_CALL_FUNCTION); + mp_ops.send_ipi_single(cpu, ACTION_CALL_FUNCTION); } static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) { - loongson_send_ipi_mask(mask, SMP_CALL_FUNCTION); + mp_ops.send_ipi_mask(mask, ACTION_CALL_FUNCTION); } #ifdef CONFIG_HOTPLUG_CPU @@ -101,4 +111,8 @@ static inline void __cpu_die(unsigned int cpu) } #endif +#else /* !CONFIG_SMP */ +#define cpu_logical_map(cpu) 0 +#endif /* CONFIG_SMP */ + #endif /* __ASM_SMP_H */ diff --git a/arch/loongarch/include/asm/stackframe.h b/arch/loongarch/include/asm/stackframe.h index 45b507a7b06f..d9eafd3ee3d1 100644 --- a/arch/loongarch/include/asm/stackframe.h +++ b/arch/loongarch/include/asm/stackframe.h @@ -42,7 +42,7 @@ .macro JUMP_VIRT_ADDR temp1 temp2 li.d \temp1, CACHE_BASE pcaddi \temp2, 0 - or \temp1, \temp1, \temp2 + bstrins.d \temp1, \temp2, (DMW_PABITS - 1), 0 jirl zero, \temp1, 0xc .endm diff --git a/arch/loongarch/include/asm/tlb.h b/arch/loongarch/include/asm/tlb.h index da7a3b5b9374..e071f5e9e858 100644 --- a/arch/loongarch/include/asm/tlb.h +++ b/arch/loongarch/include/asm/tlb.h @@ -132,8 +132,6 @@ static __always_inline void invtlb_all(u32 op, u32 info, u64 addr) ); } -#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0) - static void tlb_flush(struct mmu_gather *tlb); #define tlb_flush tlb_flush diff --git a/arch/loongarch/include/asm/fb.h b/arch/loongarch/include/asm/video.h index 0b218b10a9ec..9f76845f2d4f 100644 --- a/arch/loongarch/include/asm/fb.h +++ b/arch/loongarch/include/asm/video.h @@ -2,8 +2,8 @@ /* * Copyright (C) 2020-2022 Loongson Technology Corporation Limited */ -#ifndef _ASM_FB_H_ -#define _ASM_FB_H_ +#ifndef _ASM_VIDEO_H_ +#define _ASM_VIDEO_H_ #include <linux/compiler.h> #include <linux/string.h> @@ -26,6 +26,6 @@ static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n) } #define fb_memset fb_memset_io -#include <asm-generic/fb.h> +#include <asm-generic/video.h> -#endif /* _ASM_FB_H_ */ +#endif /* _ASM_VIDEO_H_ */ diff --git a/arch/loongarch/include/uapi/asm/kvm.h b/arch/loongarch/include/uapi/asm/kvm.h index 109785922cf9..f9abef382317 100644 --- a/arch/loongarch/include/uapi/asm/kvm.h +++ b/arch/loongarch/include/uapi/asm/kvm.h @@ -17,6 +17,8 @@ #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 #define KVM_DIRTY_LOG_PAGE_OFFSET 64 +#define KVM_GUESTDBG_USE_SW_BP 0x00010000 + /* * for KVM_GET_REGS and KVM_SET_REGS */ @@ -72,6 +74,8 @@ struct kvm_fpu { #define KVM_REG_LOONGARCH_COUNTER (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 1) #define KVM_REG_LOONGARCH_VCPU_RESET (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 2) +/* Debugging: Special instruction for software breakpoint */ +#define KVM_REG_LOONGARCH_DEBUG_INST (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3) #define LOONGARCH_REG_SHIFT 3 #define LOONGARCH_REG_64(TYPE, REG) (TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT)) diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile index 3a7620b66bc6..c9bfeda89e40 100644 --- a/arch/loongarch/kernel/Makefile +++ b/arch/loongarch/kernel/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_MODULES) += module.o module-sections.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_PROC_FS) += proc.o +obj-$(CONFIG_PARAVIRT) += paravirt.o obj-$(CONFIG_SMP) += smp.o diff --git a/arch/loongarch/kernel/dma.c b/arch/loongarch/kernel/dma.c index 7a9c6a9dd2d0..429555fb4e13 100644 --- a/arch/loongarch/kernel/dma.c +++ b/arch/loongarch/kernel/dma.c @@ -8,17 +8,12 @@ void acpi_arch_dma_setup(struct device *dev) { int ret; - u64 mask, end = 0; + u64 mask, end; const struct bus_dma_region *map = NULL; ret = acpi_dma_get_range(dev, &map); if (!ret && map) { - const struct bus_dma_region *r = map; - - for (end = 0; r->size; r++) { - if (r->dma_start + r->size - 1 > end) - end = r->dma_start + r->size - 1; - } + end = dma_range_map_max(map); mask = DMA_BIT_MASK(ilog2(end) + 1); dev->bus_dma_limit = end; diff --git a/arch/loongarch/kernel/ftrace_dyn.c b/arch/loongarch/kernel/ftrace_dyn.c index 73858c9029cc..bff058317062 100644 --- a/arch/loongarch/kernel/ftrace_dyn.c +++ b/arch/loongarch/kernel/ftrace_dyn.c @@ -287,6 +287,9 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip, struct kprobe *p; struct kprobe_ctlblk *kcb; + if (unlikely(kprobe_ftrace_disabled)) + return; + bit = ftrace_test_recursion_trylock(ip, parent_ip); if (bit < 0) return; diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index c4f7de2e2805..4677ea8fa8e9 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -22,7 +22,7 @@ _head: .word MZ_MAGIC /* "MZ", MS-DOS header */ .org 0x8 - .dword kernel_entry /* Kernel entry point */ + .dword _kernel_entry /* Kernel entry point (physical address) */ .dword _kernel_asize /* Kernel image effective size */ .quad PHYS_LINK_KADDR /* Kernel image load offset from start of RAM */ .org 0x38 /* 0x20 ~ 0x37 reserved */ diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c index 883e5066ae44..f4991c03514f 100644 --- a/arch/loongarch/kernel/irq.c +++ b/arch/loongarch/kernel/irq.c @@ -87,23 +87,9 @@ static void __init init_vec_parent_group(void) acpi_table_parse(ACPI_SIG_MCFG, early_pci_mcfg_parse); } -static int __init get_ipi_irq(void) -{ - struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY); - - if (d) - return irq_create_mapping(d, INT_IPI); - - return -EINVAL; -} - void __init init_IRQ(void) { int i; -#ifdef CONFIG_SMP - int r, ipi_irq; - static int ipi_dummy_dev; -#endif unsigned int order = get_order(IRQ_STACK_SIZE); struct page *page; @@ -113,13 +99,7 @@ void __init init_IRQ(void) init_vec_parent_group(); irqchip_init(); #ifdef CONFIG_SMP - ipi_irq = get_ipi_irq(); - if (ipi_irq < 0) - panic("IPI IRQ mapping failed\n"); - irq_set_percpu_devid(ipi_irq); - r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &ipi_dummy_dev); - if (r < 0) - panic("IPI IRQ request failed\n"); + mp_ops.init_ipi(); #endif for (i = 0; i < NR_IRQS; i++) @@ -133,5 +113,5 @@ void __init init_IRQ(void) per_cpu(irq_stack, i), per_cpu(irq_stack, i) + IRQ_STACK_SIZE); } - set_csr_ecfg(ECFGF_IP0 | ECFGF_IP1 | ECFGF_IP2 | ECFGF_IPI | ECFGF_PMC); + set_csr_ecfg(ECFGF_SIP0 | ECFGF_IP0 | ECFGF_IP1 | ECFGF_IP2 | ECFGF_IPI | ECFGF_PMC); } diff --git a/arch/loongarch/kernel/machine_kexec.c b/arch/loongarch/kernel/machine_kexec.c index 2dcb9e003657..8ae641dc53bb 100644 --- a/arch/loongarch/kernel/machine_kexec.c +++ b/arch/loongarch/kernel/machine_kexec.c @@ -225,6 +225,7 @@ void crash_smp_send_stop(void) void machine_shutdown(void) { +#ifdef CONFIG_SMP int cpu; /* All CPUs go to reboot_code_buffer */ @@ -232,7 +233,6 @@ void machine_shutdown(void) if (!cpu_online(cpu)) cpu_device_up(get_cpu_device(cpu)); -#ifdef CONFIG_SMP smp_call_function(kexec_shutdown_secondary, NULL, 0); #endif } diff --git a/arch/loongarch/kernel/module.c b/arch/loongarch/kernel/module.c index c7d0338d12c1..36d6d9eeb7c7 100644 --- a/arch/loongarch/kernel/module.c +++ b/arch/loongarch/kernel/module.c @@ -490,12 +490,6 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, return 0; } -void *module_alloc(unsigned long size) -{ - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); -} - static void module_init_ftrace_plt(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mod) { diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c new file mode 100644 index 000000000000..1633ed4f692f --- /dev/null +++ b/arch/loongarch/kernel/paravirt.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/export.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/jump_label.h> +#include <linux/kvm_para.h> +#include <linux/static_call.h> +#include <asm/paravirt.h> + +struct static_key paravirt_steal_enabled; +struct static_key paravirt_steal_rq_enabled; + +static u64 native_steal_clock(int cpu) +{ + return 0; +} + +DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock); + +#ifdef CONFIG_SMP +static void pv_send_ipi_single(int cpu, unsigned int action) +{ + int min, old; + irq_cpustat_t *info = &per_cpu(irq_stat, cpu); + + old = atomic_fetch_or(BIT(action), &info->message); + if (old) + return; + + min = cpu_logical_map(cpu); + kvm_hypercall3(KVM_HCALL_FUNC_IPI, 1, 0, min); +} + +#define KVM_IPI_CLUSTER_SIZE (2 * BITS_PER_LONG) + +static void pv_send_ipi_mask(const struct cpumask *mask, unsigned int action) +{ + int i, cpu, min = 0, max = 0, old; + __uint128_t bitmap = 0; + irq_cpustat_t *info; + + if (cpumask_empty(mask)) + return; + + action = BIT(action); + for_each_cpu(i, mask) { + info = &per_cpu(irq_stat, i); + old = atomic_fetch_or(action, &info->message); + if (old) + continue; + + cpu = cpu_logical_map(i); + if (!bitmap) { + min = max = cpu; + } else if (cpu < min && cpu > (max - KVM_IPI_CLUSTER_SIZE)) { + /* cpu < min, and bitmap still enough */ + bitmap <<= min - cpu; + min = cpu; + } else if (cpu > min && cpu < (min + KVM_IPI_CLUSTER_SIZE)) { + /* cpu > min, and bitmap still enough */ + max = cpu > max ? cpu : max; + } else { + /* + * With cpu, bitmap will exceed KVM_IPI_CLUSTER_SIZE, + * send IPI here directly and skip the remaining CPUs. + */ + kvm_hypercall3(KVM_HCALL_FUNC_IPI, (unsigned long)bitmap, + (unsigned long)(bitmap >> BITS_PER_LONG), min); + min = max = cpu; + bitmap = 0; + } + __set_bit(cpu - min, (unsigned long *)&bitmap); + } + + if (bitmap) + kvm_hypercall3(KVM_HCALL_FUNC_IPI, (unsigned long)bitmap, + (unsigned long)(bitmap >> BITS_PER_LONG), min); +} + +static irqreturn_t pv_ipi_interrupt(int irq, void *dev) +{ + u32 action; + irq_cpustat_t *info; + + /* Clear SWI interrupt */ + clear_csr_estat(1 << INT_SWI0); + info = this_cpu_ptr(&irq_stat); + action = atomic_xchg(&info->message, 0); + + if (action & SMP_RESCHEDULE) { + scheduler_ipi(); + info->ipi_irqs[IPI_RESCHEDULE]++; + } + + if (action & SMP_CALL_FUNCTION) { + generic_smp_call_function_interrupt(); + info->ipi_irqs[IPI_CALL_FUNCTION]++; + } + + return IRQ_HANDLED; +} + +static void pv_init_ipi(void) +{ + int r, swi; + + swi = get_percpu_irq(INT_SWI0); + if (swi < 0) + panic("SWI0 IRQ mapping failed\n"); + irq_set_percpu_devid(swi); + r = request_percpu_irq(swi, pv_ipi_interrupt, "SWI0-IPI", &irq_stat); + if (r < 0) + panic("SWI0 IRQ request failed\n"); +} +#endif + +static bool kvm_para_available(void) +{ + int config; + static int hypervisor_type; + + if (!hypervisor_type) { + config = read_cpucfg(CPUCFG_KVM_SIG); + if (!memcmp(&config, KVM_SIGNATURE, 4)) + hypervisor_type = HYPERVISOR_KVM; + } + + return hypervisor_type == HYPERVISOR_KVM; +} + +int __init pv_ipi_init(void) +{ + int feature; + + if (!cpu_has_hypervisor) + return 0; + if (!kvm_para_available()) + return 0; + + feature = read_cpucfg(CPUCFG_KVM_FEATURE); + if (!(feature & KVM_FEATURE_IPI)) + return 0; + +#ifdef CONFIG_SMP + mp_ops.init_ipi = pv_init_ipi; + mp_ops.send_ipi_single = pv_send_ipi_single; + mp_ops.send_ipi_mask = pv_send_ipi_mask; +#endif + + return 0; +} diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c index 0491bf453cd4..f86a4b838dd7 100644 --- a/arch/loongarch/kernel/perf_event.c +++ b/arch/loongarch/kernel/perf_event.c @@ -456,16 +456,6 @@ static void loongarch_pmu_disable(struct pmu *pmu) static DEFINE_MUTEX(pmu_reserve_mutex); static atomic_t active_events = ATOMIC_INIT(0); -static int get_pmc_irq(void) -{ - struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY); - - if (d) - return irq_create_mapping(d, INT_PCOV); - - return -EINVAL; -} - static void reset_counters(void *arg); static int __hw_perf_event_init(struct perf_event *event); @@ -473,7 +463,7 @@ static void hw_perf_event_destroy(struct perf_event *event) { if (atomic_dec_and_mutex_lock(&active_events, &pmu_reserve_mutex)) { on_each_cpu(reset_counters, NULL, 1); - free_irq(get_pmc_irq(), &loongarch_pmu); + free_irq(get_percpu_irq(INT_PCOV), &loongarch_pmu); mutex_unlock(&pmu_reserve_mutex); } } @@ -562,7 +552,7 @@ static int loongarch_pmu_event_init(struct perf_event *event) if (event->cpu >= 0 && !cpu_online(event->cpu)) return -ENODEV; - irq = get_pmc_irq(); + irq = get_percpu_irq(INT_PCOV); flags = IRQF_PERCPU | IRQF_NOBALANCING | IRQF_NO_THREAD | IRQF_NO_SUSPEND | IRQF_SHARED; if (!atomic_inc_not_zero(&active_events)) { mutex_lock(&pmu_reserve_mutex); @@ -884,4 +874,4 @@ static int __init init_hw_perf_events(void) return 0; } -early_initcall(init_hw_perf_events); +pure_initcall(init_hw_perf_events); diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index 60e0fe97f61a..3d048f1be143 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -282,7 +282,7 @@ static void __init fdt_setup(void) return; /* Prefer to use built-in dtb, checking its legality first. */ - if (!fdt_check_header(__dtb_start)) + if (IS_ENABLED(CONFIG_BUILTIN_DTB) && !fdt_check_header(__dtb_start)) fdt_pointer = __dtb_start; else fdt_pointer = efi_fdt_pointer(); /* Fallback to firmware dtb */ @@ -351,10 +351,8 @@ void __init platform_init(void) arch_reserve_vmcore(); arch_reserve_crashkernel(); -#ifdef CONFIG_ACPI_TABLE_UPGRADE - acpi_table_upgrade(); -#endif #ifdef CONFIG_ACPI + acpi_table_upgrade(); acpi_gbl_use_default_register_widths = false; acpi_boot_table_init(); #endif diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index aabee0b280fe..1436d2465939 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -29,6 +29,7 @@ #include <asm/loongson.h> #include <asm/mmu_context.h> #include <asm/numa.h> +#include <asm/paravirt.h> #include <asm/processor.h> #include <asm/setup.h> #include <asm/time.h> @@ -66,11 +67,6 @@ static cpumask_t cpu_core_setup_map; struct secondary_data cpuboot_data; static DEFINE_PER_CPU(int, cpu_state); -enum ipi_msg_type { - IPI_RESCHEDULE, - IPI_CALL_FUNCTION, -}; - static const char *ipi_types[NR_IPI] __tracepoint_string = { [IPI_RESCHEDULE] = "Rescheduling interrupts", [IPI_CALL_FUNCTION] = "Function call interrupts", @@ -190,24 +186,19 @@ static u32 ipi_read_clear(int cpu) static void ipi_write_action(int cpu, u32 action) { - unsigned int irq = 0; - - while ((irq = ffs(action))) { - uint32_t val = IOCSR_IPI_SEND_BLOCKING; + uint32_t val; - val |= (irq - 1); - val |= (cpu << IOCSR_IPI_SEND_CPU_SHIFT); - iocsr_write32(val, LOONGARCH_IOCSR_IPI_SEND); - action &= ~BIT(irq - 1); - } + val = IOCSR_IPI_SEND_BLOCKING | action; + val |= (cpu << IOCSR_IPI_SEND_CPU_SHIFT); + iocsr_write32(val, LOONGARCH_IOCSR_IPI_SEND); } -void loongson_send_ipi_single(int cpu, unsigned int action) +static void loongson_send_ipi_single(int cpu, unsigned int action) { ipi_write_action(cpu_logical_map(cpu), (u32)action); } -void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action) +static void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action) { unsigned int i; @@ -222,11 +213,11 @@ void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action) */ void arch_smp_send_reschedule(int cpu) { - loongson_send_ipi_single(cpu, SMP_RESCHEDULE); + mp_ops.send_ipi_single(cpu, ACTION_RESCHEDULE); } EXPORT_SYMBOL_GPL(arch_smp_send_reschedule); -irqreturn_t loongson_ipi_interrupt(int irq, void *dev) +static irqreturn_t loongson_ipi_interrupt(int irq, void *dev) { unsigned int action; unsigned int cpu = smp_processor_id(); @@ -246,6 +237,26 @@ irqreturn_t loongson_ipi_interrupt(int irq, void *dev) return IRQ_HANDLED; } +static void loongson_init_ipi(void) +{ + int r, ipi_irq; + + ipi_irq = get_percpu_irq(INT_IPI); + if (ipi_irq < 0) + panic("IPI IRQ mapping failed\n"); + + irq_set_percpu_devid(ipi_irq); + r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &irq_stat); + if (r < 0) + panic("IPI IRQ request failed\n"); +} + +struct smp_ops mp_ops = { + .init_ipi = loongson_init_ipi, + .send_ipi_single = loongson_send_ipi_single, + .send_ipi_mask = loongson_send_ipi_mask, +}; + static void __init fdt_smp_setup(void) { #ifdef CONFIG_OF @@ -262,7 +273,6 @@ static void __init fdt_smp_setup(void) if (cpuid == loongson_sysconf.boot_cpu_id) { cpu = 0; - numa_add_cpu(cpu); } else { cpu = cpumask_next_zero(-1, cpu_present_mask); } @@ -272,6 +282,9 @@ static void __init fdt_smp_setup(void) set_cpu_present(cpu, true); __cpu_number_map[cpuid] = cpu; __cpu_logical_map[cpu] = cpuid; + + early_numa_add_cpu(cpu, 0); + set_cpuid_to_node(cpuid, 0); } loongson_sysconf.nr_cpus = num_processors; @@ -289,6 +302,7 @@ void __init loongson_smp_setup(void) cpu_data[0].core = cpu_logical_map(0) % loongson_sysconf.cores_per_package; cpu_data[0].package = cpu_logical_map(0) / loongson_sysconf.cores_per_package; + pv_ipi_init(); iocsr_write32(0xffffffff, LOONGARCH_IOCSR_IPI_EN); pr_info("Detected %i available CPU(s)\n", loongson_sysconf.nr_cpus); } @@ -323,7 +337,7 @@ void loongson_boot_secondary(int cpu, struct task_struct *idle) csr_mail_send(entry, cpu_logical_map(cpu), 0); - loongson_send_ipi_single(cpu, SMP_BOOT_CPU); + loongson_send_ipi_single(cpu, ACTION_BOOT_CPU); } /* @@ -333,7 +347,7 @@ void loongson_init_secondary(void) { unsigned int cpu = smp_processor_id(); unsigned int imask = ECFGF_IP0 | ECFGF_IP1 | ECFGF_IP2 | - ECFGF_IPI | ECFGF_PMC | ECFGF_TIMER; + ECFGF_IPI | ECFGF_PMC | ECFGF_TIMER | ECFGF_SIP0; change_csr_ecfg(ECFG0_IM, imask); @@ -456,6 +470,7 @@ void smp_prepare_boot_cpu(void) set_cpu_possible(0, true); set_cpu_online(0, true); set_my_cpu_offset(per_cpu_offset(0)); + numa_add_cpu(0); rr_node = first_node(node_online_map); for_each_possible_cpu(cpu) { diff --git a/arch/loongarch/kernel/time.c b/arch/loongarch/kernel/time.c index e7015f7b70e3..fd5354f9be7c 100644 --- a/arch/loongarch/kernel/time.c +++ b/arch/loongarch/kernel/time.c @@ -123,16 +123,6 @@ void sync_counter(void) csr_write64(init_offset, LOONGARCH_CSR_CNTC); } -static int get_timer_irq(void) -{ - struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY); - - if (d) - return irq_create_mapping(d, INT_TI); - - return -EINVAL; -} - int constant_clockevent_init(void) { unsigned int cpu = smp_processor_id(); @@ -142,7 +132,7 @@ int constant_clockevent_init(void) static int irq = 0, timer_irq_installed = 0; if (!timer_irq_installed) { - irq = get_timer_irq(); + irq = get_percpu_irq(INT_TI); if (irq < 0) pr_err("Failed to map irq %d (timer)\n", irq); } diff --git a/arch/loongarch/kernel/vmlinux.lds.S b/arch/loongarch/kernel/vmlinux.lds.S index e8e97dbf9ca4..3c7595342730 100644 --- a/arch/loongarch/kernel/vmlinux.lds.S +++ b/arch/loongarch/kernel/vmlinux.lds.S @@ -6,6 +6,7 @@ #define PAGE_SIZE _PAGE_SIZE #define RO_EXCEPTION_TABLE_ALIGN 4 +#define PHYSADDR_MASK 0xffffffffffff /* 48-bit */ /* * Put .bss..swapper_pg_dir as the first thing in .bss. This will @@ -142,10 +143,11 @@ SECTIONS #ifdef CONFIG_EFI_STUB /* header symbols */ - _kernel_asize = _end - _text; - _kernel_fsize = _edata - _text; - _kernel_vsize = _end - __initdata_begin; - _kernel_rsize = _edata - __initdata_begin; + _kernel_entry = ABSOLUTE(kernel_entry & PHYSADDR_MASK); + _kernel_asize = ABSOLUTE(_end - _text); + _kernel_fsize = ABSOLUTE(_edata - _text); + _kernel_vsize = ABSOLUTE(_end - __initdata_begin); + _kernel_rsize = ABSOLUTE(_edata - __initdata_begin); #endif .gptab.sdata : { diff --git a/arch/loongarch/kvm/Makefile b/arch/loongarch/kvm/Makefile index 244467d7792a..b2f4cbe01ae8 100644 --- a/arch/loongarch/kvm/Makefile +++ b/arch/loongarch/kvm/Makefile @@ -3,7 +3,7 @@ # Makefile for LoongArch KVM support # -ccflags-y += -I $(srctree)/$(src) +ccflags-y += -I $(src) include $(srctree)/virt/kvm/Makefile.kvm diff --git a/arch/loongarch/kvm/exit.c b/arch/loongarch/kvm/exit.c index ed1d89d53e2e..c86e099af5ca 100644 --- a/arch/loongarch/kvm/exit.c +++ b/arch/loongarch/kvm/exit.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/preempt.h> #include <linux/vmalloc.h> +#include <trace/events/kvm.h> #include <asm/fpu.h> #include <asm/inst.h> #include <asm/loongarch.h> @@ -20,6 +21,46 @@ #include <asm/kvm_vcpu.h> #include "trace.h" +static int kvm_emu_cpucfg(struct kvm_vcpu *vcpu, larch_inst inst) +{ + int rd, rj; + unsigned int index; + + if (inst.reg2_format.opcode != cpucfg_op) + return EMULATE_FAIL; + + rd = inst.reg2_format.rd; + rj = inst.reg2_format.rj; + ++vcpu->stat.cpucfg_exits; + index = vcpu->arch.gprs[rj]; + + /* + * By LoongArch Reference Manual 2.2.10.5 + * Return value is 0 for undefined CPUCFG index + * + * Disable preemption since hw gcsr is accessed + */ + preempt_disable(); + switch (index) { + case 0 ... (KVM_MAX_CPUCFG_REGS - 1): + vcpu->arch.gprs[rd] = vcpu->arch.cpucfg[index]; + break; + case CPUCFG_KVM_SIG: + /* CPUCFG emulation between 0x40000000 -- 0x400000ff */ + vcpu->arch.gprs[rd] = *(unsigned int *)KVM_SIGNATURE; + break; + case CPUCFG_KVM_FEATURE: + vcpu->arch.gprs[rd] = KVM_FEATURE_IPI; + break; + default: + vcpu->arch.gprs[rd] = 0; + break; + } + preempt_enable(); + + return EMULATE_DONE; +} + static unsigned long kvm_emu_read_csr(struct kvm_vcpu *vcpu, int csrid) { unsigned long val = 0; @@ -208,8 +249,6 @@ int kvm_emu_idle(struct kvm_vcpu *vcpu) static int kvm_trap_handle_gspr(struct kvm_vcpu *vcpu) { - int rd, rj; - unsigned int index; unsigned long curr_pc; larch_inst inst; enum emulation_result er = EMULATE_DONE; @@ -224,21 +263,7 @@ static int kvm_trap_handle_gspr(struct kvm_vcpu *vcpu) er = EMULATE_FAIL; switch (((inst.word >> 24) & 0xff)) { case 0x0: /* CPUCFG GSPR */ - if (inst.reg2_format.opcode == 0x1B) { - rd = inst.reg2_format.rd; - rj = inst.reg2_format.rj; - ++vcpu->stat.cpucfg_exits; - index = vcpu->arch.gprs[rj]; - er = EMULATE_DONE; - /* - * By LoongArch Reference Manual 2.2.10.5 - * return value is 0 for undefined cpucfg index - */ - if (index < KVM_MAX_CPUCFG_REGS) - vcpu->arch.gprs[rd] = vcpu->arch.cpucfg[index]; - else - vcpu->arch.gprs[rd] = 0; - } + er = kvm_emu_cpucfg(vcpu, inst); break; case 0x4: /* CSR{RD,WR,XCHG} GSPR */ er = kvm_handle_csr(vcpu, inst); @@ -417,6 +442,8 @@ int kvm_emu_mmio_read(struct kvm_vcpu *vcpu, larch_inst inst) vcpu->arch.io_gpr = rd; run->mmio.is_write = 0; vcpu->mmio_is_write = 0; + trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, run->mmio.len, + run->mmio.phys_addr, NULL); } else { kvm_err("Read not supported Inst=0x%08x @%lx BadVaddr:%#lx\n", inst.word, vcpu->arch.pc, vcpu->arch.badv); @@ -463,6 +490,9 @@ int kvm_complete_mmio_read(struct kvm_vcpu *vcpu, struct kvm_run *run) break; } + trace_kvm_mmio(KVM_TRACE_MMIO_READ, run->mmio.len, + run->mmio.phys_addr, run->mmio.data); + return er; } @@ -564,6 +594,8 @@ int kvm_emu_mmio_write(struct kvm_vcpu *vcpu, larch_inst inst) run->mmio.is_write = 1; vcpu->mmio_needed = 1; vcpu->mmio_is_write = 1; + trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, run->mmio.len, + run->mmio.phys_addr, data); } else { vcpu->arch.pc = curr_pc; kvm_err("Write not supported Inst=0x%08x @%lx BadVaddr:%#lx\n", @@ -685,6 +717,90 @@ static int kvm_handle_lasx_disabled(struct kvm_vcpu *vcpu) return RESUME_GUEST; } +static int kvm_send_pv_ipi(struct kvm_vcpu *vcpu) +{ + unsigned int min, cpu, i; + unsigned long ipi_bitmap; + struct kvm_vcpu *dest; + + min = kvm_read_reg(vcpu, LOONGARCH_GPR_A3); + for (i = 0; i < 2; i++, min += BITS_PER_LONG) { + ipi_bitmap = kvm_read_reg(vcpu, LOONGARCH_GPR_A1 + i); + if (!ipi_bitmap) + continue; + + cpu = find_first_bit((void *)&ipi_bitmap, BITS_PER_LONG); + while (cpu < BITS_PER_LONG) { + dest = kvm_get_vcpu_by_cpuid(vcpu->kvm, cpu + min); + cpu = find_next_bit((void *)&ipi_bitmap, BITS_PER_LONG, cpu + 1); + if (!dest) + continue; + + /* Send SWI0 to dest vcpu to emulate IPI interrupt */ + kvm_queue_irq(dest, INT_SWI0); + kvm_vcpu_kick(dest); + } + } + + return 0; +} + +/* + * Hypercall emulation always return to guest, Caller should check retval. + */ +static void kvm_handle_service(struct kvm_vcpu *vcpu) +{ + unsigned long func = kvm_read_reg(vcpu, LOONGARCH_GPR_A0); + long ret; + + switch (func) { + case KVM_HCALL_FUNC_IPI: + kvm_send_pv_ipi(vcpu); + ret = KVM_HCALL_SUCCESS; + break; + default: + ret = KVM_HCALL_INVALID_CODE; + break; + }; + + kvm_write_reg(vcpu, LOONGARCH_GPR_A0, ret); +} + +static int kvm_handle_hypercall(struct kvm_vcpu *vcpu) +{ + int ret; + larch_inst inst; + unsigned int code; + + inst.word = vcpu->arch.badi; + code = inst.reg0i15_format.immediate; + ret = RESUME_GUEST; + + switch (code) { + case KVM_HCALL_SERVICE: + vcpu->stat.hypercall_exits++; + kvm_handle_service(vcpu); + break; + case KVM_HCALL_SWDBG: + /* KVM_HCALL_SWDBG only in effective when SW_BP is enabled */ + if (vcpu->guest_debug & KVM_GUESTDBG_SW_BP_MASK) { + vcpu->run->exit_reason = KVM_EXIT_DEBUG; + ret = RESUME_HOST; + break; + } + fallthrough; + default: + /* Treat it as noop intruction, only set return value */ + kvm_write_reg(vcpu, LOONGARCH_GPR_A0, KVM_HCALL_INVALID_CODE); + break; + } + + if (ret == RESUME_GUEST) + update_pc(&vcpu->arch); + + return ret; +} + /* * LoongArch KVM callback handling for unimplemented guest exiting */ @@ -716,6 +832,7 @@ static exit_handle_fn kvm_fault_tables[EXCCODE_INT_START] = { [EXCCODE_LSXDIS] = kvm_handle_lsx_disabled, [EXCCODE_LASXDIS] = kvm_handle_lasx_disabled, [EXCCODE_GSPR] = kvm_handle_gspr, + [EXCCODE_HVC] = kvm_handle_hypercall, }; int kvm_handle_fault(struct kvm_vcpu *vcpu, int fault) diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c index a556cff35740..98883aa23ab8 100644 --- a/arch/loongarch/kvm/mmu.c +++ b/arch/loongarch/kvm/mmu.c @@ -494,38 +494,6 @@ bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) range->end << PAGE_SHIFT, &ctx); } -bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) -{ - unsigned long prot_bits; - kvm_pte_t *ptep; - kvm_pfn_t pfn = pte_pfn(range->arg.pte); - gpa_t gpa = range->start << PAGE_SHIFT; - - ptep = kvm_populate_gpa(kvm, NULL, gpa, 0); - if (!ptep) - return false; - - /* Replacing an absent or old page doesn't need flushes */ - if (!kvm_pte_present(NULL, ptep) || !kvm_pte_young(*ptep)) { - kvm_set_pte(ptep, 0); - return false; - } - - /* Fill new pte if write protected or page migrated */ - prot_bits = _PAGE_PRESENT | __READABLE; - prot_bits |= _CACHE_MASK & pte_val(range->arg.pte); - - /* - * Set _PAGE_WRITE or _PAGE_DIRTY iff old and new pte both support - * _PAGE_WRITE for map_page_fast if next page write fault - * _PAGE_DIRTY since gpa has already recorded as dirty page - */ - prot_bits |= __WRITEABLE & *ptep & pte_val(range->arg.pte); - kvm_set_pte(ptep, kvm_pfn_pte(pfn, __pgprot(prot_bits))); - - return true; -} - bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) { kvm_ptw_ctx ctx; diff --git a/arch/loongarch/kvm/trace.h b/arch/loongarch/kvm/trace.h index c2484ad4cffa..1783397b1bc8 100644 --- a/arch/loongarch/kvm/trace.h +++ b/arch/loongarch/kvm/trace.h @@ -19,14 +19,16 @@ DECLARE_EVENT_CLASS(kvm_transition, TP_PROTO(struct kvm_vcpu *vcpu), TP_ARGS(vcpu), TP_STRUCT__entry( + __field(unsigned int, vcpu_id) __field(unsigned long, pc) ), TP_fast_assign( + __entry->vcpu_id = vcpu->vcpu_id; __entry->pc = vcpu->arch.pc; ), - TP_printk("PC: 0x%08lx", __entry->pc) + TP_printk("vcpu %u PC: 0x%08lx", __entry->vcpu_id, __entry->pc) ); DEFINE_EVENT(kvm_transition, kvm_enter, @@ -54,19 +56,22 @@ DECLARE_EVENT_CLASS(kvm_exit, TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason), TP_ARGS(vcpu, reason), TP_STRUCT__entry( + __field(unsigned int, vcpu_id) __field(unsigned long, pc) __field(unsigned int, reason) ), TP_fast_assign( + __entry->vcpu_id = vcpu->vcpu_id; __entry->pc = vcpu->arch.pc; __entry->reason = reason; ), - TP_printk("[%s]PC: 0x%08lx", - __print_symbolic(__entry->reason, - kvm_trace_symbol_exit_types), - __entry->pc) + TP_printk("vcpu %u [%s] PC: 0x%08lx", + __entry->vcpu_id, + __print_symbolic(__entry->reason, + kvm_trace_symbol_exit_types), + __entry->pc) ); DEFINE_EVENT(kvm_exit, kvm_exit_idle, @@ -85,14 +90,17 @@ TRACE_EVENT(kvm_exit_gspr, TP_PROTO(struct kvm_vcpu *vcpu, unsigned int inst_word), TP_ARGS(vcpu, inst_word), TP_STRUCT__entry( + __field(unsigned int, vcpu_id) __field(unsigned int, inst_word) ), TP_fast_assign( + __entry->vcpu_id = vcpu->vcpu_id; __entry->inst_word = inst_word; ), - TP_printk("Inst word: 0x%08x", __entry->inst_word) + TP_printk("vcpu %u Inst word: 0x%08x", __entry->vcpu_id, + __entry->inst_word) ); #define KVM_TRACE_AUX_SAVE 0 diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 3a8779065f73..9e8030d45129 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -19,6 +19,7 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { STATS_DESC_COUNTER(VCPU, idle_exits), STATS_DESC_COUNTER(VCPU, cpucfg_exits), STATS_DESC_COUNTER(VCPU, signal_exits), + STATS_DESC_COUNTER(VCPU, hypercall_exits) }; const struct kvm_stats_header kvm_vcpu_stats_header = { @@ -247,7 +248,101 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg) { - return -EINVAL; + if (dbg->control & ~KVM_GUESTDBG_VALID_MASK) + return -EINVAL; + + if (dbg->control & KVM_GUESTDBG_ENABLE) + vcpu->guest_debug = dbg->control; + else + vcpu->guest_debug = 0; + + return 0; +} + +static inline int kvm_set_cpuid(struct kvm_vcpu *vcpu, u64 val) +{ + int cpuid; + struct kvm_phyid_map *map; + struct loongarch_csrs *csr = vcpu->arch.csr; + + if (val >= KVM_MAX_PHYID) + return -EINVAL; + + map = vcpu->kvm->arch.phyid_map; + cpuid = kvm_read_sw_gcsr(csr, LOONGARCH_CSR_CPUID); + + spin_lock(&vcpu->kvm->arch.phyid_map_lock); + if ((cpuid < KVM_MAX_PHYID) && map->phys_map[cpuid].enabled) { + /* Discard duplicated CPUID set operation */ + if (cpuid == val) { + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); + return 0; + } + + /* + * CPUID is already set before + * Forbid changing to a different CPUID at runtime + */ + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); + return -EINVAL; + } + + if (map->phys_map[val].enabled) { + /* Discard duplicated CPUID set operation */ + if (vcpu == map->phys_map[val].vcpu) { + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); + return 0; + } + + /* + * New CPUID is already set with other vcpu + * Forbid sharing the same CPUID between different vcpus + */ + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); + return -EINVAL; + } + + kvm_write_sw_gcsr(csr, LOONGARCH_CSR_CPUID, val); + map->phys_map[val].enabled = true; + map->phys_map[val].vcpu = vcpu; + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); + + return 0; +} + +static inline void kvm_drop_cpuid(struct kvm_vcpu *vcpu) +{ + int cpuid; + struct kvm_phyid_map *map; + struct loongarch_csrs *csr = vcpu->arch.csr; + + map = vcpu->kvm->arch.phyid_map; + cpuid = kvm_read_sw_gcsr(csr, LOONGARCH_CSR_CPUID); + + if (cpuid >= KVM_MAX_PHYID) + return; + + spin_lock(&vcpu->kvm->arch.phyid_map_lock); + if (map->phys_map[cpuid].enabled) { + map->phys_map[cpuid].vcpu = NULL; + map->phys_map[cpuid].enabled = false; + kvm_write_sw_gcsr(csr, LOONGARCH_CSR_CPUID, KVM_MAX_PHYID); + } + spin_unlock(&vcpu->kvm->arch.phyid_map_lock); +} + +struct kvm_vcpu *kvm_get_vcpu_by_cpuid(struct kvm *kvm, int cpuid) +{ + struct kvm_phyid_map *map; + + if (cpuid >= KVM_MAX_PHYID) + return NULL; + + map = kvm->arch.phyid_map; + if (!map->phys_map[cpuid].enabled) + return NULL; + + return map->phys_map[cpuid].vcpu; } static int _kvm_getcsr(struct kvm_vcpu *vcpu, unsigned int id, u64 *val) @@ -282,6 +377,9 @@ static int _kvm_setcsr(struct kvm_vcpu *vcpu, unsigned int id, u64 val) if (get_gcsr_flag(id) & INVALID_GCSR) return -EINVAL; + if (id == LOONGARCH_CSR_CPUID) + return kvm_set_cpuid(vcpu, val); + if (id == LOONGARCH_CSR_ESTAT) { /* ESTAT IP0~IP7 inject through GINTC */ gintc = (val >> 2) & 0xff; @@ -409,6 +507,9 @@ static int kvm_get_one_reg(struct kvm_vcpu *vcpu, case KVM_REG_LOONGARCH_COUNTER: *v = drdtime() + vcpu->kvm->arch.time_offset; break; + case KVM_REG_LOONGARCH_DEBUG_INST: + *v = INSN_HVCL | KVM_HCALL_SWDBG; + break; default: ret = -EINVAL; break; @@ -924,6 +1025,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) /* Set cpuid */ kvm_write_sw_gcsr(csr, LOONGARCH_CSR_TMID, vcpu->vcpu_id); + kvm_write_sw_gcsr(csr, LOONGARCH_CSR_CPUID, KVM_MAX_PHYID); /* Start with no pending virtual guest interrupts */ csr->csrs[LOONGARCH_CSR_GINTC] = 0; @@ -942,6 +1044,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) hrtimer_cancel(&vcpu->arch.swtimer); kvm_mmu_free_memory_cache(&vcpu->arch.mmu_page_cache); + kvm_drop_cpuid(vcpu); kfree(vcpu->arch.csr); /* diff --git a/arch/loongarch/kvm/vm.c b/arch/loongarch/kvm/vm.c index 0a37f6fa8f2d..6b2e4f66ad26 100644 --- a/arch/loongarch/kvm/vm.c +++ b/arch/loongarch/kvm/vm.c @@ -30,6 +30,14 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) if (!kvm->arch.pgd) return -ENOMEM; + kvm->arch.phyid_map = kvzalloc(sizeof(struct kvm_phyid_map), GFP_KERNEL_ACCOUNT); + if (!kvm->arch.phyid_map) { + free_page((unsigned long)kvm->arch.pgd); + kvm->arch.pgd = NULL; + return -ENOMEM; + } + spin_lock_init(&kvm->arch.phyid_map_lock); + kvm_init_vmcs(kvm); kvm->arch.gpa_size = BIT(cpu_vabits - 1); kvm->arch.root_level = CONFIG_PGTABLE_LEVELS - 1; @@ -52,6 +60,8 @@ void kvm_arch_destroy_vm(struct kvm *kvm) kvm_destroy_vcpus(kvm); free_page((unsigned long)kvm->arch.pgd); kvm->arch.pgd = NULL; + kvfree(kvm->arch.phyid_map); + kvm->arch.phyid_map = NULL; } int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) @@ -66,6 +76,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_IMMEDIATE_EXIT: case KVM_CAP_IOEVENTFD: case KVM_CAP_MP_STATE: + case KVM_CAP_SET_GUEST_DEBUG: r = 1; break; case KVM_CAP_NR_VCPUS: diff --git a/arch/loongarch/lib/Makefile b/arch/loongarch/lib/Makefile index a77bf160bfc4..ccea3bbd4353 100644 --- a/arch/loongarch/lib/Makefile +++ b/arch/loongarch/lib/Makefile @@ -6,6 +6,8 @@ lib-y += delay.o memset.o memcpy.o memmove.o \ clear_user.o copy_user.o csum.o dump_tlb.o unaligned.o +obj-$(CONFIG_ARCH_SUPPORTS_INT128) += tishift.o + obj-$(CONFIG_CPU_HAS_LSX) += xor_simd.o xor_simd_glue.o obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o diff --git a/arch/loongarch/lib/tishift.S b/arch/loongarch/lib/tishift.S new file mode 100644 index 000000000000..fa1d310012bc --- /dev/null +++ b/arch/loongarch/lib/tishift.S @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <asm/asmmacro.h> +#include <linux/export.h> +#include <linux/linkage.h> + +SYM_FUNC_START(__ashlti3) + srli.d t2, a0, 1 + nor t3, zero, a2 + sll.d t1, a1, a2 + srl.d t2, t2, t3 + andi t0, a2, 64 + sll.d a0, a0, a2 + or t1, t2, t1 + maskeqz a1, a0, t0 + masknez a0, a0, t0 + masknez t0, t1, t0 + or a1, t0, a1 + jr ra +SYM_FUNC_END(__ashlti3) +EXPORT_SYMBOL(__ashlti3) + +SYM_FUNC_START(__ashrti3) + nor t3, zero, a2 + slli.d t2, a1, 1 + srl.d t1, a0, a2 + sll.d t2, t2, t3 + andi t0, a2, 64 + or t1, t2, t1 + sra.d a2, a1, a2 + srai.d a1, a1, 63 + maskeqz a0, a2, t0 + maskeqz a1, a1, t0 + masknez a2, a2, t0 + masknez t0, t1, t0 + or a1, a1, a2 + or a0, t0, a0 + jr ra +SYM_FUNC_END(__ashrti3) +EXPORT_SYMBOL(__ashrti3) + +SYM_FUNC_START(__lshrti3) + slli.d t2, a1, 1 + nor t3, zero, a2 + srl.d t1, a0, a2 + sll.d t2, t2, t3 + andi t0, a2, 64 + srl.d a1, a1, a2 + or t1, t2, t1 + maskeqz a0, a1, t0 + masknez a1, a1, t0 + masknez t0, t1, t0 + or a0, t0, a0 + jr ra +SYM_FUNC_END(__lshrti3) +EXPORT_SYMBOL(__lshrti3) diff --git a/arch/loongarch/mm/fault.c b/arch/loongarch/mm/fault.c index 1fc2f6813ea0..97b40defde06 100644 --- a/arch/loongarch/mm/fault.c +++ b/arch/loongarch/mm/fault.c @@ -202,10 +202,10 @@ good_area: if (!(vma->vm_flags & VM_WRITE)) goto bad_area; } else { - if (!(vma->vm_flags & VM_READ) && address != exception_era(regs)) - goto bad_area; if (!(vma->vm_flags & VM_EXEC) && address == exception_era(regs)) goto bad_area; + if (!(vma->vm_flags & (VM_READ | VM_WRITE)) && address != exception_era(regs)) + goto bad_area; } /* diff --git a/arch/loongarch/mm/hugetlbpage.c b/arch/loongarch/mm/hugetlbpage.c index 1e76fcb83093..12222c56cb59 100644 --- a/arch/loongarch/mm/hugetlbpage.c +++ b/arch/loongarch/mm/hugetlbpage.c @@ -50,21 +50,11 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr, return (pte_t *) pmd; } -int pmd_huge(pmd_t pmd) -{ - return (pmd_val(pmd) & _PAGE_HUGE) != 0; -} - -int pud_huge(pud_t pud) -{ - return (pud_val(pud) & _PAGE_HUGE) != 0; -} - uint64_t pmd_to_entrylo(unsigned long pmd_val) { uint64_t val; /* PMD as PTE. Must be huge page */ - if (!pmd_huge(__pmd(pmd_val))) + if (!pmd_leaf(__pmd(pmd_val))) panic("%s", __func__); val = pmd_val ^ _PAGE_HUGE; diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c index 4dd53427f657..bf789d114c2d 100644 --- a/arch/loongarch/mm/init.c +++ b/arch/loongarch/mm/init.c @@ -24,6 +24,7 @@ #include <linux/gfp.h> #include <linux/hugetlb.h> #include <linux/mmzone.h> +#include <linux/execmem.h> #include <asm/asm-offsets.h> #include <asm/bootinfo.h> @@ -248,3 +249,23 @@ EXPORT_SYMBOL(invalid_pmd_table); #endif pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss; EXPORT_SYMBOL(invalid_pte_table); + +#ifdef CONFIG_EXECMEM +static struct execmem_info execmem_info __ro_after_init; + +struct execmem_info __init *execmem_arch_setup(void) +{ + execmem_info = (struct execmem_info){ + .ranges = { + [EXECMEM_DEFAULT] = { + .start = MODULES_VADDR, + .end = MODULES_END, + .pgprot = PAGE_KERNEL, + .alignment = 1, + }, + }, + }; + + return &execmem_info; +} +#endif /* CONFIG_EXECMEM */ diff --git a/arch/loongarch/mm/mmap.c b/arch/loongarch/mm/mmap.c index 89af7c12e8c0..889030985135 100644 --- a/arch/loongarch/mm/mmap.c +++ b/arch/loongarch/mm/mmap.c @@ -25,7 +25,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, struct vm_area_struct *vma; unsigned long addr = addr0; int do_color_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (unlikely(len > TASK_SIZE)) return -ENOMEM; @@ -83,7 +83,6 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, */ } - info.flags = 0; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; return vm_unmapped_area(&info); diff --git a/arch/loongarch/mm/tlbex.S b/arch/loongarch/mm/tlbex.S index a44387b838af..c08682a89c58 100644 --- a/arch/loongarch/mm/tlbex.S +++ b/arch/loongarch/mm/tlbex.S @@ -125,6 +125,8 @@ vmalloc_load: tlb_huge_update_load: #ifdef CONFIG_SMP ll.d ra, t1, 0 +#else + rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) #endif andi t0, ra, _PAGE_PRESENT beqz t0, nopage_tlb_load @@ -135,7 +137,6 @@ tlb_huge_update_load: beqz t0, tlb_huge_update_load ori t0, ra, _PAGE_VALID #else - rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) ori t0, ra, _PAGE_VALID st.d t0, t1, 0 #endif @@ -281,6 +282,8 @@ vmalloc_store: tlb_huge_update_store: #ifdef CONFIG_SMP ll.d ra, t1, 0 +#else + rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) #endif andi t0, ra, _PAGE_PRESENT | _PAGE_WRITE xori t0, t0, _PAGE_PRESENT | _PAGE_WRITE @@ -292,7 +295,6 @@ tlb_huge_update_store: beqz t0, tlb_huge_update_store ori t0, ra, (_PAGE_VALID | _PAGE_DIRTY | _PAGE_MODIFIED) #else - rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) ori t0, ra, (_PAGE_VALID | _PAGE_DIRTY | _PAGE_MODIFIED) st.d t0, t1, 0 #endif @@ -438,6 +440,8 @@ vmalloc_modify: tlb_huge_update_modify: #ifdef CONFIG_SMP ll.d ra, t1, 0 +#else + rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) #endif andi t0, ra, _PAGE_WRITE beqz t0, nopage_tlb_modify @@ -448,7 +452,6 @@ tlb_huge_update_modify: beqz t0, tlb_huge_update_modify ori t0, ra, (_PAGE_VALID | _PAGE_DIRTY | _PAGE_MODIFIED) #else - rotri.d ra, ra, 64 - (_PAGE_HUGE_SHIFT + 1) ori t0, ra, (_PAGE_VALID | _PAGE_DIRTY | _PAGE_MODIFIED) st.d t0, t1, 0 #endif diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index e73323d759d0..7dbefd4ba210 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -1294,16 +1294,19 @@ skip_init_ctx: flush_icache_range((unsigned long)header, (unsigned long)(ctx.image + ctx.idx)); if (!prog->is_func || extra_pass) { + int err; + if (extra_pass && ctx.idx != jit_data->ctx.idx) { pr_err_once("multi-func JIT bug %d != %d\n", ctx.idx, jit_data->ctx.idx); - bpf_jit_binary_free(header); - prog->bpf_func = NULL; - prog->jited = 0; - prog->jited_len = 0; - goto out_offset; + goto out_free; + } + err = bpf_jit_binary_lock_ro(header); + if (err) { + pr_err_once("bpf_jit_binary_lock_ro() returned %d\n", + err); + goto out_free; } - bpf_jit_binary_lock_ro(header); } else { jit_data->ctx = ctx; jit_data->image = image_ptr; @@ -1334,6 +1337,13 @@ out: out_offset = -1; return prog; + +out_free: + bpf_jit_binary_free(header); + prog->bpf_func = NULL; + prog->jited = 0; + prog->jited_len = 0; + goto out_offset; } /* Indicate the JIT backend supports mixing bpf2bpf and tailcalls. */ diff --git a/arch/loongarch/power/suspend.c b/arch/loongarch/power/suspend.c index 166d9e06a64b..c9e594925c47 100644 --- a/arch/loongarch/power/suspend.c +++ b/arch/loongarch/power/suspend.c @@ -24,6 +24,7 @@ struct saved_registers { u64 kpgd; u32 pwctl0; u32 pwctl1; + u64 pcpu_base; }; static struct saved_registers saved_regs; @@ -36,6 +37,7 @@ void loongarch_common_suspend(void) saved_regs.pwctl1 = csr_read32(LOONGARCH_CSR_PWCTL1); saved_regs.ecfg = csr_read32(LOONGARCH_CSR_ECFG); saved_regs.euen = csr_read32(LOONGARCH_CSR_EUEN); + saved_regs.pcpu_base = csr_read64(PERCPU_BASE_KS); loongarch_suspend_addr = loongson_sysconf.suspend_addr; } @@ -44,7 +46,6 @@ void loongarch_common_resume(void) { sync_counter(); local_flush_tlb_all(); - csr_write64(per_cpu_offset(0), PERCPU_BASE_KS); csr_write64(eentry, LOONGARCH_CSR_EENTRY); csr_write64(eentry, LOONGARCH_CSR_MERRENTRY); csr_write64(tlbrentry, LOONGARCH_CSR_TLBRENTRY); @@ -55,6 +56,7 @@ void loongarch_common_resume(void) csr_write32(saved_regs.pwctl1, LOONGARCH_CSR_PWCTL1); csr_write32(saved_regs.ecfg, LOONGARCH_CSR_ECFG); csr_write32(saved_regs.euen, LOONGARCH_CSR_EUEN); + csr_write64(saved_regs.pcpu_base, PERCPU_BASE_KS); } int loongarch_acpi_suspend(void) diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile index 75c6726382c3..d724d46b07c8 100644 --- a/arch/loongarch/vdso/Makefile +++ b/arch/loongarch/vdso/Makefile @@ -1,11 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 # Objects to go into the VDSO. -KASAN_SANITIZE := n -UBSAN_SANITIZE := n -KCOV_INSTRUMENT := n -OBJECT_FILES_NON_STANDARD := y - # Include the generic Makefile to check the built vdso. include $(srctree)/lib/vdso/Makefile @@ -39,8 +34,6 @@ ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \ $(filter -E%,$(KBUILD_CFLAGS)) -nostdlib -shared \ --hash-style=sysv --build-id -T -GCOV_PROFILE := n - # # Shared build commands. # @@ -52,7 +45,7 @@ quiet_cmd_vdsoas_o_S = AS $@ cmd_vdsoas_o_S = $(CC) $(a_flags) -c -o $@ $< # Generate VDSO offsets using helper script -gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh +gen-vdsosym := $(src)/gen_vdso_offsets.sh quiet_cmd_vdsosym = VDSOSYM $@ cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ |