diff options
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 387 |
1 files changed, 300 insertions, 87 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 9cc8b84f7eb0..5b1116733d88 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -5,14 +5,32 @@ config LOONGARCH select ACPI select ACPI_GENERIC_GSI if ACPI select ACPI_MCFG if ACPI + select ACPI_HOTPLUG_CPU if ACPI_PROCESSOR && HOTPLUG_CPU + select ACPI_PPTT if ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ARCH_BINFMT_ELF_STATE + select ARCH_NEEDS_DEFER_KASAN + select ARCH_DISABLE_KASAN_INLINE select ARCH_ENABLE_MEMORY_HOTPLUG select ARCH_ENABLE_MEMORY_HOTREMOVE + select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI + select ARCH_HAS_CPU_FINALIZE_INIT + select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_DEBUG_VM_PGTABLE + 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_PREEMPT_LAZY select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SET_MEMORY + select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select ARCH_HAS_UBSAN + select ARCH_HAS_VDSO_ARCH_DATA select ARCH_INLINE_READ_LOCK if !PREEMPTION select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION @@ -47,25 +65,40 @@ 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_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 select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF + select ARCH_USE_MEMTEST 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_HUGETLB_PAGE_OPTIMIZE_VMEMMAP 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 + select EDAC_SUPPORT select EFI select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_DEVICES + select GENERIC_CPU_VULNERABILITIES select GENERIC_ENTRY select GENERIC_GETTIMEOFDAY select GENERIC_IOREMAP if !ARCH_IOREMAP + select GENERIC_IRQ_MATRIX_ALLOCATOR select GENERIC_IRQ_MULTI_HANDLER select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW @@ -80,48 +113,83 @@ config LOONGARCH select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL select GPIOLIB + select HAS_IOPORT select HAVE_ARCH_AUDITSYSCALL + select HAVE_ARCH_JUMP_LABEL + select HAVE_ARCH_JUMP_LABEL_RELATIVE + select HAVE_ARCH_KASAN + select HAVE_ARCH_KFENCE + select HAVE_ARCH_KGDB if PERF_EVENTS + select HAVE_ARCH_KSTACK_ERASE select HAVE_ARCH_MMAP_RND_BITS if MMU + select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET + select HAVE_ARCH_SECCOMP select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE + select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD select HAVE_ASM_MODVERSIONS select HAVE_CONTEXT_TRACKING_USER select HAVE_C_RECORDMCOUNT + select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_ARGS + select HAVE_FTRACE_REGS_HAVING_PT_REGS + select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_EBPF_JIT + select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN select HAVE_EXIT_THREAD - select HAVE_FAST_GUP - select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_GENERIC_TIF_BITS + select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC + select HAVE_FUNCTION_ARG_ACCESS_API + select HAVE_FUNCTION_ERROR_INJECTION + select HAVE_FUNCTION_GRAPH_FREGS select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER + select HAVE_GCC_PLUGINS select HAVE_GENERIC_VDSO + select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IOREMAP_PROT select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_IRQ_TIME_ACCOUNTING + select HAVE_KPROBES + select HAVE_KPROBES_ON_FTRACE + select HAVE_KRETPROBES + select HAVE_LIVEPATCH select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI + select HAVE_OBJTOOL if AS_HAS_EXPLICIT_RELOCS && AS_HAS_THIN_ADD_SUB select HAVE_PCI 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 + select HAVE_RETHOOK select HAVE_RSEQ + select HAVE_RUST + select HAVE_SAMPLE_FTRACE_DIRECT + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_SETUP_PER_CPU_AREA if NUMA + select HAVE_STACK_VALIDATION if HAVE_OBJTOOL select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS select HAVE_TIF_NOHZ - select HAVE_VIRT_CPU_ACCOUNTING_GEN if !SMP + select HAVE_VIRT_CPU_ACCOUNTING_GEN select IRQ_FORCED_THREADING select IRQ_LOONGARCH_CPU + select LOCK_MM_AND_FIND_VMA select MMU_GATHER_MERGE_VMAS if MMU select MODULES_USE_ELF_RELA if MODULES select NEED_PER_CPU_EMBED_FIRST_CHUNK select NEED_PER_CPU_PAGE_FIRST_CHUNK + select NUMA_MEMBLKS if NUMA select OF select OF_EARLY_FLATTREE select PCI @@ -132,7 +200,6 @@ 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 @@ -141,6 +208,7 @@ config LOONGARCH select TRACE_IRQFLAGS_SUPPORT select USE_PERCPU_NUMA_NODE_ID select USER_STACKTRACE_SUPPORT + select VDSO_GETRANDOM select ZONE_DMA32 config 32BIT @@ -149,14 +217,6 @@ config 32BIT config 64BIT def_bool y -config CPU_HAS_FPU - bool - default y - -config CPU_HAS_PREFETCH - bool - default y - config GENERIC_BUG def_bool y depends on BUG @@ -196,16 +256,7 @@ config MACH_LOONGSON64 def_bool 64BIT config FIX_EARLYCON_MEM - def_bool y - -config PAGE_SIZE_4KB - bool - -config PAGE_SIZE_16KB - bool - -config PAGE_SIZE_64KB - bool + def_bool !ARCH_IOREMAP config PGTABLE_2LEVEL bool @@ -229,6 +280,31 @@ config SCHED_OMIT_FRAME_POINTER config AS_HAS_EXPLICIT_RELOCS def_bool $(as-instr,x:pcalau12i \$t0$(comma)%pc_hi20(x)) +config AS_HAS_FCSR_CLASS + def_bool $(as-instr,movfcsr2gr \$t0$(comma)\$fcsr0) + +config AS_HAS_THIN_ADD_SUB + def_bool $(cc-option,-Wa$(comma)-mthin-add-sub) || AS_IS_LLVM + +config AS_HAS_LSX_EXTENSION + def_bool $(as-instr,vld \$vr0$(comma)\$a0$(comma)0) + +config AS_HAS_LASX_EXTENSION + def_bool $(as-instr,xvld \$xr0$(comma)\$a0$(comma)0) + +config AS_HAS_LBT_EXTENSION + def_bool $(as-instr,movscr2gr \$a0$(comma)\$scr0) + +config AS_HAS_LVZ_EXTENSION + def_bool $(as-instr,hvcl 0) + +config CC_HAS_ANNOTATE_TABLEJUMP + def_bool $(cc-option,-mannotate-tablejump) + +config RUSTC_HAS_ANNOTATE_TABLEJUMP + depends on RUST + def_bool $(rustc-option,-Cllvm-args=--loongarch-annotate-tablejump) + menu "Kernel type and options" source "kernel/Kconfig.hz" @@ -244,7 +320,7 @@ choice config 4KB_3LEVEL bool "4KB with 3 levels" - select PAGE_SIZE_4KB + select HAVE_PAGE_SIZE_4KB select PGTABLE_3LEVEL help This option selects 4KB page size with 3 level page tables, which @@ -252,7 +328,7 @@ config 4KB_3LEVEL config 4KB_4LEVEL bool "4KB with 4 levels" - select PAGE_SIZE_4KB + select HAVE_PAGE_SIZE_4KB select PGTABLE_4LEVEL help This option selects 4KB page size with 4 level page tables, which @@ -260,7 +336,7 @@ config 4KB_4LEVEL config 16KB_2LEVEL bool "16KB with 2 levels" - select PAGE_SIZE_16KB + select HAVE_PAGE_SIZE_16KB select PGTABLE_2LEVEL help This option selects 16KB page size with 2 level page tables, which @@ -268,7 +344,7 @@ config 16KB_2LEVEL config 16KB_3LEVEL bool "16KB with 3 levels" - select PAGE_SIZE_16KB + select HAVE_PAGE_SIZE_16KB select PGTABLE_3LEVEL help This option selects 16KB page size with 3 level page tables, which @@ -276,7 +352,7 @@ config 16KB_3LEVEL config 64KB_2LEVEL bool "64KB with 2 levels" - select PAGE_SIZE_64KB + select HAVE_PAGE_SIZE_64KB select PGTABLE_2LEVEL help This option selects 64KB page size with 2 level page tables, which @@ -284,7 +360,7 @@ config 64KB_2LEVEL config 64KB_3LEVEL bool "64KB with 3 levels" - select PAGE_SIZE_64KB + select HAVE_PAGE_SIZE_64KB select PGTABLE_3LEVEL help This option selects 64KB page size with 3 level page tables, which @@ -320,8 +396,8 @@ config CMDLINE_BOOTLOADER config CMDLINE_EXTEND bool "Use built-in to extend bootloader kernel arguments" help - The command-line arguments provided during boot will be - appended to the built-in command line. This is useful in + The built-in command line will be appended to the command- + line arguments provided during boot. This is useful in cases where the provided arguments are insufficient and you don't want to or cannot modify them. @@ -335,6 +411,25 @@ config CMDLINE_FORCE endchoice +config BUILTIN_DTB + bool "Enable built-in dtb in kernel" + depends on OF + select GENERIC_BUILTIN_DTB + help + Some existing systems do not provide a canonical device tree to + the kernel at boot time. Let's provide a device tree table in the + kernel, keyed by the dts filename, containing the relevant DTBs. + + Built-in DTBs are generic enough and can be used as references. + +config BUILTIN_DTB_NAME + string "Source file for built-in dtb" + depends on BUILTIN_DTB + help + Base name (without suffix, relative to arch/loongarch/boot/dts/) + for the DTS file that will be used to produce the DTB linked into + the kernel. + config DMI bool "Enable DMI scanning" select DMI_SCAN_MACHINE_NON_EFI_FALLBACK @@ -389,10 +484,10 @@ config HOTPLUG_CPU Say N if you want to disable CPU hotplug. config NR_CPUS - int "Maximum number of CPUs (2-256)" - range 2 256 + int "Maximum number of CPUs (2-2048)" + range 2 2048 + default "2048" depends on SMP - default "64" help This allows you to specify the maximum number of CPUs which this kernel will support. @@ -400,7 +495,6 @@ config NR_CPUS config NUMA bool "NUMA Support" select SMP - select ACPI_NUMA if ACPI help Say Y to compile the kernel with NUMA (Non-Uniform Memory Access) support. This option improves performance on systems with more @@ -414,12 +508,9 @@ config NODES_SHIFT config ARCH_FORCE_MAX_ORDER int "Maximum zone order" - range 14 64 if PAGE_SIZE_64KB - default "14" if PAGE_SIZE_64KB - range 12 64 if PAGE_SIZE_16KB - default "12" if PAGE_SIZE_16KB - range 11 64 - default "11" + default "13" if PAGE_SIZE_64KB + default "11" if PAGE_SIZE_16KB + default "10" help The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of @@ -428,9 +519,6 @@ config ARCH_FORCE_MAX_ORDER blocks of physically contiguous memory, then you may need to increase this value. - This config option is actually maximum order plus one. For example, - a value of 11 means that the largest free memory block is 2^10 pages. - The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option. @@ -441,55 +529,175 @@ config ARCH_IOREMAP protection support. However, you can enable LoongArch DMW-based ioremap() for better performance. -config KEXEC - bool "Kexec system call" - select KEXEC_CORE +config ARCH_WRITECOMBINE + bool "Enable WriteCombine (WUC) for ioremap()" help - kexec is a system call that implements the ability to shutdown your - current kernel, and to start another kernel. It is like a reboot - but it is independent of the system firmware. And like a reboot - you can start any kernel with it, not just Linux. + LoongArch maintains cache coherency in hardware, but when paired + with LS7A chipsets the WUC attribute (Weak-ordered UnCached, which + is similar to WriteCombine) is out of the scope of cache coherency + machanism for PCIe devices (this is a PCIe protocol violation, which + may be fixed in newer chipsets). + + This means WUC can only used for write-only memory regions now, so + this option is disabled by default, making WUC silently fallback to + SUC for ioremap(). You can enable this option if the kernel is ensured + to run on hardware without this bug. - The name comes from the similarity to the exec system call. + You can override this setting via writecombine=on/off boot parameter. -config CRASH_DUMP - bool "Build kdump crash kernel" +config ARCH_STRICT_ALIGN + bool "Enable -mstrict-align to prevent unaligned accesses" if EXPERT + default y help - Generate crash dump after being started by kexec. This should - be normally only set in special crash dump kernels which are - loaded in the main kernel with kexec-tools into a specially - reserved region and then later executed after a crash by - kdump/kexec. + Not all LoongArch cores support h/w unaligned access, we can use + -mstrict-align build parameter to prevent unaligned accesses. - For more details see Documentation/admin-guide/kdump/kdump.rst + CPUs with h/w unaligned access support: + Loongson-2K2000/2K3000 and all of Loongson-3 series processors + based on LoongArch. -config PHYSICAL_START - hex "Physical address where the kernel is loaded" - default "0x90000000a0000000" - depends on CRASH_DUMP + CPUs without h/w unaligned access support: + Loongson-2K0300/2K0500/2K1000. + + If you want to make sure whether to support unaligned memory access + on your hardware, please read the bit 20 (UAL) of CPUCFG1 register. + + This option is enabled by default to make the kernel be able to run + on all LoongArch systems. But you can disable it manually if you want + to run kernel only on systems with h/w unaligned access support in + order to optimise for performance. + +config CPU_HAS_FPU + bool + default y + +config CPU_HAS_LSX + bool "Support for the Loongson SIMD Extension" + depends on AS_HAS_LSX_EXTENSION + help + Loongson SIMD Extension (LSX) introduces 128 bit wide vector registers + and a set of SIMD instructions to operate on them. When this option + is enabled the kernel will support allocating & switching LSX + vector register contexts. If you know that your kernel will only be + running on CPUs which do not support LSX or that your userland will + not be making use of it then you may wish to say N here to reduce + the size & complexity of your kernel. + + If unsure, say Y. + +config CPU_HAS_LASX + bool "Support for the Loongson Advanced SIMD Extension" + depends on CPU_HAS_LSX + depends on AS_HAS_LASX_EXTENSION help - This gives the XKPRANGE address where the kernel is loaded. - If you plan to use kernel for capturing the crash dump change - this value to start of the reserved region (the "X" value as - specified in the "crashkernel=YM@XM" command line boot parameter - passed to the panic-ed kernel). + Loongson Advanced SIMD Extension (LASX) introduces 256 bit wide vector + registers and a set of SIMD instructions to operate on them. When this + option is enabled the kernel will support allocating & switching LASX + vector register contexts. If you know that your kernel will only be + running on CPUs which do not support LASX or that your userland will + not be making use of it then you may wish to say N here to reduce + the size & complexity of your kernel. + + If unsure, say Y. + +config CPU_HAS_LBT + bool "Support for the Loongson Binary Translation Extension" + depends on AS_HAS_LBT_EXTENSION + help + Loongson Binary Translation (LBT) introduces 4 scratch registers (SCR0 + to SCR3), x86/ARM eflags (eflags) and x87 fpu stack pointer (ftop). + Enabling this option allows the kernel to allocate and switch registers + specific to LBT. + + If you want to use this feature, such as the Loongson Architecture + Translator (LAT), say Y. -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS +config CPU_HAS_PREFETCH + bool default y + +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 + +config ARCH_DEFAULT_CRASH_DUMP + def_bool y + +config ARCH_SELECTS_CRASH_DUMP + def_bool y + depends on CRASH_DUMP + select RELOCATABLE + +config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION + def_bool CRASH_RESERVE + +config RELOCATABLE + bool "Relocatable kernel" + select ARCH_HAS_RELR + help + This builds the kernel as a Position Independent Executable (PIE), + which retains all relocation metadata required, so as to relocate + the kernel binary at runtime to a different virtual address from + its link address. + +config RANDOMIZE_BASE + bool "Randomize the address of the kernel (KASLR)" + depends on RELOCATABLE + help + Randomizes the physical and virtual address at which the + kernel image is loaded, as a security feature that + deters exploit attempts relying on knowledge of the location + of kernel internals. + + The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. + + If unsure, say N. + +config RANDOMIZE_BASE_MAX_OFFSET + hex "Maximum KASLR offset" if EXPERT + depends on RANDOMIZE_BASE + range 0x0 0x10000000 + default "0x01000000" + help + When KASLR is active, this provides the maximum offset that will + be applied to the kernel image. It should be set according to the + amount of physical RAM available in the target system. + + This is limited by the size of the lower address memory, 256MB. + +source "kernel/livepatch/Kconfig" + +config PARAVIRT + bool "Enable paravirtualization code" + depends on AS_HAS_LVZ_EXTENSION help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc/<pid>/seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. + 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. + +config PARAVIRT_TIME_ACCOUNTING + bool "Paravirtual steal time accounting" + depends on PARAVIRT + help + Select this option to enable fine granularity task steal time + accounting. Time spent executing other tasks in parallel with + the current vCPU is discounted from the vCPU power. To account for + that, there can be a small performance impact. - If unsure, say Y. Only embedded should say N here. + If in doubt, say N here. endmenu @@ -509,10 +717,6 @@ config ARCH_SPARSEMEM_ENABLE or have huge holes in the physical address space for other reasons. See <file:Documentation/mm/numa.rst> for more. -config ARCH_ENABLE_THP_MIGRATION - def_bool y - depends on TRANSPARENT_HUGEPAGE - config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG @@ -527,6 +731,14 @@ config ARCH_MMAP_RND_BITS_MIN config ARCH_MMAP_RND_BITS_MAX default 18 +config ARCH_SUPPORTS_UPROBES + def_bool y + +config KASAN_SHADOW_OFFSET + hex + default 0x0 + depends on KASAN + menu "Power management options" config ARCH_SUSPEND_POSSIBLE @@ -537,7 +749,8 @@ config ARCH_HIBERNATION_POSSIBLE source "kernel/power/Kconfig" source "drivers/acpi/Kconfig" +source "drivers/cpufreq/Kconfig" endmenu -source "drivers/firmware/Kconfig" +source "arch/loongarch/kvm/Kconfig" |