VERSION = 6
PATCHLEVEL = 8
SUBLEVEL = 0
-EXTRAVERSION = -rc5
+EXTRAVERSION =
NAME = Hurr durr I'ma ninja sloth
# *DOCUMENTATION*
# prepare rule.
this-makefile := $(lastword $(MAKEFILE_LIST))
- export abs_srctree := $(realpath $(dir $(this-makefile)))
- export abs_objtree := $(CURDIR)
+ abs_srctree := $(realpath $(dir $(this-makefile)))
+ abs_objtree := $(CURDIR)
ifneq ($(sub_make_done),1)
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
- need-config :=
+ need-config :=
endif
endif
ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
- may-sync-config :=
+ may-sync-config :=
endif
endif
need-compiler := $(may-sync-config)
ifneq ($(KBUILD_EXTMOD),)
- may-sync-config :=
+ may-sync-config :=
endif
ifeq ($(KBUILD_EXTMOD),)
- ifneq ($(filter %config,$(MAKECMDGOALS)),)
- config-build := 1
- ifneq ($(words $(MAKECMDGOALS)),1)
- mixed-build := 1
- endif
+ ifneq ($(filter %config,$(MAKECMDGOALS)),)
+ config-build := 1
+ ifneq ($(words $(MAKECMDGOALS)),1)
+ mixed-build := 1
endif
+ endif
endif
# We cannot build single targets and the others at the same time
ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),)
- single-build := 1
+ single-build := 1
ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
- mixed-build := 1
+ mixed-build := 1
endif
endif
# For "make -j clean all", "make -j mrproper defconfig all", etc.
ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
- ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
- mixed-build := 1
- endif
+ ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
+ mixed-build := 1
+ endif
endif
# install and modules_install need also be processed one by one
ifneq ($(filter install,$(MAKECMDGOALS)),)
- ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
- mixed-build := 1
- endif
+ ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+ mixed-build := 1
+ endif
endif
ifdef mixed-build
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_RUSTFLAGS := $(rust_common_flags) \
- --target=$(objtree)/scripts/target.json \
-Cpanic=abort -Cembed-bitcode=n -Clto=n \
-Cforce-unwind-tables=n -Ccodegen-units=1 \
-Csymbol-mangling-version=v0 \
# Limit inlining across translation units to reduce binary size
KBUILD_LDFLAGS += -mllvm -import-instr-limit=5
-
-# Check for frame size exceeding threshold during prolog/epilog insertion
-# when using lld < 13.0.0.
-ifneq ($(CONFIG_FRAME_WARN),0)
-ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 130000),y)
-KBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN)
-endif
-endif
endif
ifdef CONFIG_LTO
endif
ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0)
+ # Set the minimal function alignment. Use the newer GCC option
+ # -fmin-function-alignment if it is available, or fall back to -falign-funtions.
+ # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNMENT.
+ ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT
+ KBUILD_CFLAGS += -fmin-function-alignment=$(CONFIG_FUNCTION_ALIGNMENT)
+ else
KBUILD_CFLAGS += -falign-functions=$(CONFIG_FUNCTION_ALIGNMENT)
endif
+ endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc
# All the preparing..
prepare: prepare0
ifdef CONFIG_RUST
- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh
+ +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh
$(Q)$(MAKE) $(build)=rust
endif
PHONY += dtbs dtbs_prepare dtbs_install dtbs_check
dtbs: dtbs_prepare
- $(Q)$(MAKE) $(build)=$(dtstree)
+ $(Q)$(MAKE) $(build)=$(dtstree) need-dtbslist=1
# include/config/kernel.release is actually needed when installing DTBs because
# INSTALL_DTBS_PATH contains $(KERNELRELEASE). However, we do not want to make
dtbs_check: dtbs
dtbs_install:
- $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.dtbinst obj=$(dtstree)
ifdef CONFIG_OF_EARLY_FLATTREE
all: dtbs
# "Is Rust available?" target
PHONY += rustavailable
rustavailable:
- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh && echo "Rust is available!"
+ +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh && echo "Rust is available!"
# Documentation target
#
-o -name '*.ko.*' \
-o -name '*.dtb' -o -name '*.dtbo' \
-o -name '*.dtb.S' -o -name '*.dtbo.S' \
- -o -name '*.dt.yaml' \
+ -o -name '*.dt.yaml' -o -name 'dtbs-list' \
-o -name '*.dwo' -o -name '*.lst' \
-o -name '*.su' -o -name '*.mod' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
and vice-versa 32-bit applications to call 64-bit mmap().
Required for applications doing different bitness syscalls.
+config HAVE_PAGE_SIZE_4KB
+ bool
+
+config HAVE_PAGE_SIZE_8KB
+ bool
+
+config HAVE_PAGE_SIZE_16KB
+ bool
+
+config HAVE_PAGE_SIZE_32KB
+ bool
+
+config HAVE_PAGE_SIZE_64KB
+ bool
+
+config HAVE_PAGE_SIZE_256KB
+ bool
+
+choice
+ prompt "MMU page size"
+
+config PAGE_SIZE_4KB
+ bool "4KiB pages"
+ depends on HAVE_PAGE_SIZE_4KB
+ help
+ This option select the standard 4KiB Linux page size and the only
+ available option on many architectures. Using 4KiB page size will
+ minimize memory consumption and is therefore recommended for low
+ memory systems.
+ Some software that is written for x86 systems makes incorrect
+ assumptions about the page size and only runs on 4KiB pages.
+
+config PAGE_SIZE_8KB
+ bool "8KiB pages"
+ depends on HAVE_PAGE_SIZE_8KB
+ help
+ This option is the only supported page size on a few older
+ processors, and can be slightly faster than 4KiB pages.
+
+config PAGE_SIZE_16KB
+ bool "16KiB pages"
+ depends on HAVE_PAGE_SIZE_16KB
+ help
+ This option is usually a good compromise between memory
+ consumption and performance for typical desktop and server
+ workloads, often saving a level of page table lookups compared
+ to 4KB pages as well as reducing TLB pressure and overhead of
+ per-page operations in the kernel at the expense of a larger
+ page cache.
+
+config PAGE_SIZE_32KB
+ bool "32KiB pages"
+ depends on HAVE_PAGE_SIZE_32KB
+ help
+ Using 32KiB page size will result in slightly higher performance
+ kernel at the price of higher memory consumption compared to
+ 16KiB pages. This option is available only on cnMIPS cores.
+ Note that you will need a suitable Linux distribution to
+ support this.
+
+config PAGE_SIZE_64KB
+ bool "64KiB pages"
+ depends on HAVE_PAGE_SIZE_64KB
+ help
+ Using 64KiB page size will result in slightly higher performance
+ kernel at the price of much higher memory consumption compared to
+ 4KiB or 16KiB pages.
+ This is not suitable for general-purpose workloads but the
+ better performance may be worth the cost for certain types of
+ supercomputing or database applications that work mostly with
+ large in-memory data rather than small files.
+
+config PAGE_SIZE_256KB
+ bool "256KiB pages"
+ depends on HAVE_PAGE_SIZE_256KB
+ help
+ 256KiB pages have little practical value due to their extreme
+ memory usage. The kernel will only be able to run applications
+ that have been compiled with '-zmax-page-size' set to 256KiB
+ (the default is 64KiB or 4KiB on most architectures).
+
+endchoice
+
config PAGE_SIZE_LESS_THAN_64KB
def_bool y
- depends on !ARM64_64K_PAGES
depends on !PAGE_SIZE_64KB
- depends on !PARISC_PAGE_SIZE_64KB
depends on PAGE_SIZE_LESS_THAN_256KB
config PAGE_SIZE_LESS_THAN_256KB
def_bool y
depends on !PAGE_SIZE_256KB
+config PAGE_SHIFT
+ int
+ default 12 if PAGE_SIZE_4KB
+ default 13 if PAGE_SIZE_8KB
+ default 14 if PAGE_SIZE_16KB
+ default 15 if PAGE_SIZE_32KB
+ default 16 if PAGE_SIZE_64KB
+ default 18 if PAGE_SIZE_256KB
+
# This allows to use a set of generic functions to determine mmap base
# address by giving priority to top-down scheme only if the process
# is not in legacy mode (compat task, unlimited stack size or
default 4 if FUNCTION_ALIGNMENT_4B
default 0
+ config CC_HAS_MIN_FUNCTION_ALIGNMENT
+ # Detect availability of the GCC option -fmin-function-alignment which
+ # guarantees minimal alignment for all functions, unlike
+ # -falign-functions which the compiler ignores for cold functions.
+ def_bool $(cc-option, -fmin-function-alignment=8)
+
+ config CC_HAS_SANE_FUNCTION_ALIGNMENT
+ # Set if the guaranteed alignment with -fmin-function-alignment is
+ # available or extra care is required in the kernel. Clang provides
+ # strict alignment always, even with -falign-functions.
+ def_bool CC_HAS_MIN_FUNCTION_ALIGNMENT || CC_IS_CLANG
+
endmenu
select PCI_DOMAINS if PCI
select PCI_SYSCALL if PCI
select HAVE_ASM_MODVERSIONS
+ select HAVE_PAGE_SIZE_8KB
select HAVE_PCSPKR_PLATFORM
select HAVE_PERF_EVENTS
select NEED_DMA_MAP_STATE
bool
depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
default y if !ALPHA_LYNX
+ default y if !ALPHA_EV5
config ALPHA_LCA
bool
bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
- config ALPHA_EV4
- bool
- default y if ALPHA_LYNX && !ALPHA_EV5
-
config ALPHA_CIA
bool
depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
config ALPHA_GAMMA
- bool "EV5 CPU(s) (model 5/xxx)?"
- depends on ALPHA_SABLE
+ bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_SABLE
+ depends on ALPHA_SABLE || ALPHA_LYNX
+ default ALPHA_LYNX
help
Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
- config ALPHA_GAMMA
- bool
- depends on ALPHA_LYNX
- default y
-
config ALPHA_T2
bool
depends on ALPHA_SABLE || ALPHA_LYNX
select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_NO_PREEMPT
+ select ARCH_WANT_FRAME_POINTERS
select DMA_GLOBAL_POOL
+ select HAVE_PAGE_SIZE_4KB
+ select HAVE_PAGE_SIZE_16KB
+ select HAVE_PAGE_SIZE_64KB
+ select HAVE_PAGE_SIZE_256KB
+ select FRAME_POINTER
# Other pending projects/to-do items.
# select HAVE_REGS_AND_STACK_ACCESS_API
# select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_PERF_EVENTS
# GENERIC_ALLOCATOR is used by dma_alloc_coherent()
select GENERIC_ALLOCATOR
+ select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
help
Platforms that don't load the kernel at zero set this.
- config FRAME_POINTER
- def_bool y
-
config LOCKDEP_SUPPORT
def_bool y
config GENERIC_CSUM
def_bool y
- #
- # Use the generic interrupt handling code in kernel/irq/:
- #
- config GENERIC_IRQ_PROBE
- def_bool y
-
config GENERIC_HWEIGHT
def_bool y
This is purely to save memory - each supported CPU adds
approximately eight kilobytes to the kernel image.
-choice
- prompt "Kernel page size"
- default PAGE_SIZE_4KB
- help
- Changes the default page size; use with caution.
-
-config PAGE_SIZE_4KB
- bool "4KB"
-
-config PAGE_SIZE_16KB
- bool "16KB"
-
-config PAGE_SIZE_64KB
- bool "64KB"
-
-config PAGE_SIZE_256KB
- bool "256KB"
-
-endchoice
-
source "kernel/Kconfig.hz"
endmenu
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_SYSCALL_TRACEPOINTS
select ARCH_WANT_FRAME_POINTERS
+ select ARCH_HAS_CPU_CACHE_ALIASING
select ARCH_HAS_DMA_ALLOC if PA11
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
- select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_UBSAN
select ARCH_HAS_PTE_SPECIAL
select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_HUGETLBFS if PA20
def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
config MLONGCALLS
- def_bool y if PARISC_HUGE_KERNEL
bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
depends on PA8X00
+ default PARISC_HUGE_KERNEL
help
If you configure the kernel to include many drivers built-in instead
as modules, the kernel executable may become too big, so that the
Enabling this option will probably slow down your kernel.
config 64BIT
- def_bool y if "$(ARCH)" = "parisc64"
bool "64-bit kernel" if "$(ARCH)" = "parisc"
depends on PA8X00
+ default "$(ARCH)" = "parisc64"
help
Enable this if you want to support 64bit kernel on PA-RISC platform.
config PARISC_PAGE_SIZE_4KB
bool "4KB"
+ select HAVE_PAGE_SIZE_4KB
help
This lets you select the page size of the kernel. For best
performance, a page size of 16KB is recommended. For best
config PARISC_PAGE_SIZE_16KB
bool "16KB"
+ select HAVE_PAGE_SIZE_16KB
depends on PA8X00 && BROKEN && !KFENCE
config PARISC_PAGE_SIZE_64KB
bool "64KB"
+ select HAVE_PAGE_SIZE_64KB
depends on PA8X00 && BROKEN && !KFENCE
endchoice
# Building vDSO images for x86.
#
-# Include the generic Makefile to check the built vdso.
+# Include the generic Makefile to check the built vDSO:
include $(srctree)/lib/vdso/Makefile
# Sanitizer runtimes are unavailable and cannot be linked here.
KASAN_SANITIZE := n
KMSAN_SANITIZE_vclock_gettime.o := n
+ KMSAN_SANITIZE_vdso32/vclock_gettime.o := n
KMSAN_SANITIZE_vgetcpu.o := n
+ KMSAN_SANITIZE_vdso32/vgetcpu.o := n
UBSAN_SANITIZE := n
KCSAN_SANITIZE := n
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
KCOV_INSTRUMENT := n
-VDSO64-$(CONFIG_X86_64) := y
-VDSOX32-$(CONFIG_X86_X32_ABI) := y
-VDSO32-$(CONFIG_X86_32) := y
-VDSO32-$(CONFIG_IA32_EMULATION) := y
-
-# files to link into the vdso
+# Files to link into the vDSO:
vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o
vobjs32-y += vdso32/vclock_gettime.o vdso32/vgetcpu.o
vobjs-$(CONFIG_X86_SGX) += vsgx.o
-# files to link into kernel
-obj-y += vma.o extable.o
-KASAN_SANITIZE_vma.o := y
-UBSAN_SANITIZE_vma.o := y
-KCSAN_SANITIZE_vma.o := y
-OBJECT_FILES_NON_STANDARD_vma.o := n
-OBJECT_FILES_NON_STANDARD_extable.o := n
+# Files to link into the kernel:
+obj-y += vma.o extable.o
+KASAN_SANITIZE_vma.o := y
+UBSAN_SANITIZE_vma.o := y
+KCSAN_SANITIZE_vma.o := y
+
+OBJECT_FILES_NON_STANDARD_vma.o := n
+OBJECT_FILES_NON_STANDARD_extable.o := n
-# vDSO images to build
-vdso_img-$(VDSO64-y) += 64
-vdso_img-$(VDSOX32-y) += x32
-vdso_img-$(VDSO32-y) += 32
+# vDSO images to build:
+obj-$(CONFIG_X86_64) += vdso-image-64.o
+obj-$(CONFIG_X86_X32_ABI) += vdso-image-x32.o
+obj-$(CONFIG_COMPAT_32) += vdso-image-32.o vdso32-setup.o
-obj-$(VDSO32-y) += vdso32-setup.o
-OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n
+OBJECT_FILES_NON_STANDARD_vdso-image-32.o := n
+OBJECT_FILES_NON_STANDARD_vdso-image-64.o := n
+OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n
-vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
-vobjs32 := $(foreach F,$(vobjs32-y),$(obj)/$F)
+vobjs := $(addprefix $(obj)/, $(vobjs-y))
+vobjs32 := $(addprefix $(obj)/, $(vobjs32-y))
$(obj)/vdso.o: $(obj)/vdso.so
targets += vdso.lds $(vobjs-y)
targets += vdso32/vdso32.lds $(vobjs32-y)
-# Build the vDSO image C files and link them in.
-vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o)
-vdso_img_cfiles := $(vdso_img-y:%=vdso-image-%.c)
-vdso_img_sodbg := $(vdso_img-y:%=vdso%.so.dbg)
-obj-y += $(vdso_img_objs)
-targets += $(vdso_img_cfiles)
-targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so)
+targets += $(foreach x, 64 x32 32, vdso-image-$(x).c vdso$(x).so vdso$(x).so.dbg)
CPPFLAGS_vdso.lds += -P -C
-fno-omit-frame-pointer -foptimize-sibling-calls \
-DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
-ifdef CONFIG_RETPOLINE
+ifdef CONFIG_MITIGATION_RETPOLINE
ifneq ($(RETPOLINE_VDSO_CFLAGS),)
CFL += $(RETPOLINE_VDSO_CFLAGS)
endif
vobjx32s-y := $(vobjs-y:.o=-x32.o)
# same thing, but in the output directory
-vobjx32s := $(foreach F,$(vobjx32s-y),$(obj)/$F)
+vobjx32s := $(addprefix $(obj)/, $(vobjx32s-y))
# Convert 64bit object file to x32 for x32 vDSO.
quiet_cmd_x32 = X32 $@
KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
-ifdef CONFIG_RETPOLINE
+ifdef CONFIG_MITIGATION_RETPOLINE
ifneq ($(RETPOLINE_VDSO_CFLAGS),)
KBUILD_CFLAGS_32 += $(RETPOLINE_VDSO_CFLAGS)
endif
quiet_cmd_vdso_and_check = VDSO $@
cmd_vdso_and_check = $(cmd_vdso); $(cmd_vdso_check)
-
-clean-files := vdso32.so vdso32.so.dbg vdso64* vdso-image-*.c vdsox32.so*
menuconfig VIRTUALIZATION
bool "Virtualization"
- depends on HAVE_KVM || X86
default y
help
Say Y here to get to see options for using your Linux host to run other
config KVM
tristate "Kernel-based Virtual Machine (KVM) support"
- depends on HAVE_KVM
depends on HIGH_RES_TIMERS
depends on X86_LOCAL_APIC
select KVM_COMMON
select HAVE_KVM_PFNCACHE
select HAVE_KVM_DIRTY_RING_TSO
select HAVE_KVM_DIRTY_RING_ACQ_REL
- select IRQ_BYPASS_MANAGER
select HAVE_KVM_IRQ_BYPASS
select HAVE_KVM_IRQ_ROUTING
+ select HAVE_KVM_READONLY_MEM
select KVM_ASYNC_PF
select USER_RETURN_NOTIFIER
select KVM_MMIO
depends on KVM && X86_64
select KVM_GENERIC_PRIVATE_MEM
help
- Enable support for KVM software-protected VMs. Currently "protected"
- means the VM can be backed with memory provided by
- KVM_CREATE_GUEST_MEMFD.
+ Enable support for KVM software-protected VMs. Currently, software-
+ protected VMs are purely a development and testing vehicle for
+ KVM_CREATE_GUEST_MEMFD. Attempting to run a "real" VM workload as a
+ software-protected VM will fail miserably.
If unsure, say "N".
will be called kvm-amd.
config KVM_AMD_SEV
- def_bool y
bool "AMD Secure Encrypted Virtualization (SEV) support"
+ default y
depends on KVM_AMD && X86_64
depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
help
which is used to report some hardware errors notified via
SCI, mainly the corrected errors.
-config ACPI_CUSTOM_METHOD
- tristate "Allow ACPI methods to be inserted/replaced at run time"
- depends on DEBUG_FS
- help
- This debug facility allows ACPI AML methods to be inserted and/or
- replaced without rebooting the system. For details refer to:
- Documentation/firmware-guide/acpi/method-customizing.rst.
-
- NOTE: This option is security sensitive, because it allows arbitrary
- kernel memory to be written to by root (uid=0) users, allowing them
- to bypass certain security measures (e.g. if root is not allowed to
- load additional kernel modules after boot, this feature may be used
- to override that restriction).
-
config ACPI_BGRT
bool "Boottime Graphics Resource Table support"
depends on EFI && (X86 || ARM64)
config ACPI_REDUCED_HARDWARE_ONLY
bool "Hardware-reduced ACPI support only" if EXPERT
- def_bool n
help
This config item changes the way the ACPI code is built. When this
option is selected, the kernel will use a specialized version of
depends on X86_64
select MMU_NOTIFIER
select IOMMU_SVA
+ select IOMMU_IOPF
help
Shared Virtual Memory (SVM) provides a facility for devices
to access DMA resources through process address space by
one is found. If this option is not selected, DMAR support can
be enabled by passing intel_iommu=on to the kernel.
-config INTEL_IOMMU_BROKEN_GFX_WA
- bool "Workaround broken graphics drivers (going away soon)"
- depends on BROKEN && X86
- help
- Current Graphics drivers tend to use physical address
- for DMA and avoid using DMA APIs. Setting this config
- option permits the IOMMU driver to set a unity map for
- all the OS-visible memory. Hence the driver can continue
- to use physical addresses for DMA, at least until this
- option is removed in the 2.6.32 kernel.
-
config INTEL_IOMMU_FLOPPY_WA
def_bool y
depends on X86
the default value.
config INTEL_IOMMU_PERF_EVENTS
- def_bool y
bool "Intel IOMMU performance events"
+ default y
depends on INTEL_IOMMU && PERF_EVENTS
help
Selecting this option will enable the performance monitoring
If unsure, say N.
config DM_VERITY_VERIFY_ROOTHASH_SIG
- def_bool n
bool "Verity data device root hash signature verification support"
depends on DM_VERITY
select SYSTEM_DATA_VERIFICATION
Enables audit logging of several security relevant events in the
particular device-mapper targets, especially the integrity target.
+source "drivers/md/dm-vdo/Kconfig"
+
endif # MD
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Label-Attributes.html#index-cold-label-attribute
*
* When -falign-functions=N is in use, we must avoid the cold attribute as
- * contemporary versions of GCC drop the alignment for cold functions. Worse,
- * GCC can implicitly mark callees of cold functions as cold themselves, so
- * it's not sufficient to add __function_aligned here as that will not ensure
- * that callees are correctly aligned.
+ * GCC drops the alignment for cold functions. Worse, GCC can implicitly mark
+ * callees of cold functions as cold themselves, so it's not sufficient to add
+ * __function_aligned here as that will not ensure that callees are correctly
+ * aligned.
*
* See:
*
* https://lore.kernel.org/lkml/Y77%2FqVgvaJidFpYt@FVFF77S0Q05N
* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88345#c9
*/
- #if !defined(CONFIG_CC_IS_GCC) || (CONFIG_FUNCTION_ALIGNMENT == 0)
+ #if defined(CONFIG_CC_HAS_SANE_FUNCTION_ALIGNMENT) || (CONFIG_FUNCTION_ALIGNMENT == 0)
#define __cold __attribute__((__cold__))
#else
#define __cold
#define __no_sanitize_or_inline __always_inline
#endif
+/* Do not trap wrapping arithmetic within an annotated function. */
+#ifdef CONFIG_UBSAN_SIGNED_WRAP
+# define __signed_wrap __attribute__((no_sanitize("signed-integer-overflow")))
+#else
+# define __signed_wrap
+#endif
+
/* Section for code which can't be instrumented at all */
#define __noinstr_section(section) \
noinline notrace __attribute((__section__(section))) \
__no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage \
- __no_sanitize_memory
+ __no_sanitize_memory __signed_wrap
#define noinstr __noinstr_section(".noinstr.text")
bool
config IRQ_WORK
- bool
+ def_bool y if SMP
config BUILDTIME_TABLE_SORT
bool
default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
-# Currently, disable gcc-11+ array-bounds globally.
+# Currently, disable gcc-10+ array-bounds globally.
# It's still broken in gcc-13, so no upper bound yet.
-config GCC11_NO_ARRAY_BOUNDS
+config GCC10_NO_ARRAY_BOUNDS
def_bool y
config CC_NO_ARRAY_BOUNDS
bool
- default y if CC_IS_GCC && GCC_VERSION >= 110000 && GCC11_NO_ARRAY_BOUNDS
+ default y if CC_IS_GCC && GCC_VERSION >= 100000 && GCC10_NO_ARRAY_BOUNDS
# Currently, disable -Wstringop-overflow for GCC globally.
config GCC_NO_STRINGOP_OVERFLOW
config HAVE_PCSPKR_PLATFORM
bool
-# interpreter that classic socket filters depend on
-config BPF
- bool
- select CRYPTO_LIB_SHA1
-
menuconfig EXPERT
bool "Configure standard kernel features (expert users)"
# Unhide debug options, to make the on-by-default options visible
config SGETMASK_SYSCALL
bool "sgetmask/ssetmask syscalls support" if EXPERT
- def_bool PARISC || M68K || PPC || MIPS || X86 || SPARC || MICROBLAZE || SUPERH
+ default PARISC || M68K || PPC || MIPS || X86 || SPARC || MICROBLAZE || SUPERH
help
sys_sgetmask and sys_ssetmask are obsolete system calls
no longer supported in libc but still enabled by default in some
select DEBUG_SPINLOCK
select DEBUG_MUTEXES if !PREEMPT_RT
select DEBUG_RT_MUTEXES if RT_MUTEXES
- select DEBUG_RWSEMS
+ select DEBUG_RWSEMS if !PREEMPT_RT
select DEBUG_WW_MUTEX_SLOWPATH
select DEBUG_LOCK_ALLOC
select PREEMPT_COUNT if !ARCH_NO_PREEMPT
config DEBUG_RWSEMS
bool "RW Semaphore debugging: basic checks"
- depends on DEBUG_KERNEL
+ depends on DEBUG_KERNEL && !PREEMPT_RT
help
This debugging feature allows mismatched rw semaphore locks
and unlocks to be detected and reported.
depends on ARCH_HAS_KCOV
depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS
depends on !ARCH_WANTS_NO_INSTR || HAVE_NOINSTR_HACK || \
- GCC_VERSION >= 120000 || CLANG_VERSION >= 130000
+ GCC_VERSION >= 120000 || CC_IS_CLANG
select DEBUG_FS
select GCC_PLUGIN_SANCOV if !CC_HAS_SANCOV_TRACE_PC
select OBJTOOL if HAVE_NOINSTR_HACK
menuconfig RUNTIME_TESTING_MENU
bool "Runtime Testing"
- def_bool y
+ default y
if RUNTIME_TESTING_MENU
To run the benchmark, it needs to be enabled explicitly, either from
the kernel command line (when built-in), or from userspace (when
- built-in or modular.
+ built-in or modular).
Run once during kernel boot:
config TEST_IOV_ITER
tristate "Test iov_iter operation" if !KUNIT_ALL_TESTS
depends on KUNIT
+ depends on MMU
default KUNIT_ALL_TESTS
help
Enable this to turn on testing of the operation of the I/O iterator
config TEST_HEXDUMP
tristate "Test functions located in the hexdump module at runtime"
-config STRING_SELFTEST
- tristate "Test string functions at runtime"
+config STRING_KUNIT_TEST
+ tristate "KUnit test string functions at runtime" if !KUNIT_ALL_TESTS
+ depends on KUNIT
+ default KUNIT_ALL_TESTS
-config TEST_STRING_HELPERS
- tristate "Test functions located in the string_helpers module at runtime"
+config STRING_HELPERS_KUNIT_TEST
+ tristate "KUnit test string helpers at runtime" if !KUNIT_ALL_TESTS
+ depends on KUNIT
+ default KUNIT_ALL_TESTS
config TEST_KSTRTOX
tristate "Test kstrto*() family of functions at runtime"
config FORTIFY_KUNIT_TEST
tristate "Test fortified str*() and mem*() function internals at runtime" if !KUNIT_ALL_TESTS
- depends on KUNIT && FORTIFY_SOURCE
+ depends on KUNIT
default KUNIT_ALL_TESTS
help
Builds unit tests for checking internals of FORTIFY_SOURCE as used
If unsure, say N.
-config TEST_LIVEPATCH
- tristate "Test livepatching"
- default n
- depends on DYNAMIC_DEBUG
- depends on LIVEPATCH
- depends on m
- help
- Test kernel livepatching features for correctness. The tests will
- load test modules that will be livepatched in various scenarios.
-
- To run all the livepatching tests:
-
- make -C tools/testing/selftests TARGETS=livepatch run_tests
-
- Alternatively, individual tests may be invoked:
-
- tools/testing/selftests/livepatch/test-callbacks.sh
- tools/testing/selftests/livepatch/test-livepatch.sh
- tools/testing/selftests/livepatch/test-shadow-vars.sh
-
- If unsure, say N.
-
config TEST_OBJAGG
tristate "Perform selftest on object aggreration manager"
default n
The selection made here can be overridden by using the kernel
command line 'zswap.enabled=' option.
-config ZSWAP_EXCLUSIVE_LOADS_DEFAULT_ON
- bool "Invalidate zswap entries when pages are loaded"
- depends on ZSWAP
- help
- If selected, exclusive loads for zswap will be enabled at boot,
- otherwise it will be disabled.
-
- If exclusive loads are enabled, when a page is loaded from zswap,
- the zswap entry is invalidated at once, as opposed to leaving it
- in zswap until the swap entry is freed.
-
- This avoids having two copies of the same page in memory
- (compressed and uncompressed) after faulting in a page from zswap.
- The cost is that if the page was never dirtied and needs to be
- swapped out again, it will be re-compressed.
-
config ZSWAP_SHRINKER_DEFAULT_ON
bool "Shrink the zswap pool on memory pressure"
depends on ZSWAP
# support for memory balloon compaction
config BALLOON_COMPACTION
bool "Allow for balloon memory compaction/migration"
- def_bool y
+ default y
depends on COMPACTION && MEMORY_BALLOON
help
Memory fragmentation introduced by ballooning might reduce
# support for memory compaction
config COMPACTION
bool "Allow for memory compaction"
- def_bool y
+ default y
select MIGRATION
depends on MMU
help
# support for free page reporting
config PAGE_REPORTING
bool "Free page reporting"
- def_bool n
help
Free page reporting allows for the incremental acquisition of
free pages from the buddy allocator for the purpose of reporting
#
config MIGRATION
bool "Page migration"
- def_bool y
+ default y
depends on (NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION || CMA) && MMU
help
Allows the migration of the physical location of pages of processes
If unsure, say "n".
-config CMA_DEBUG
- bool "CMA debug messages (DEVELOPMENT)"
- depends on DEBUG_KERNEL && CMA
- help
- Turns on debug messages in CMA. This produces KERN_DEBUG
- messages for every CMA call as well as various messages while
- processing calls such as dma_alloc_from_contiguous().
- This option does not affect warning and error messages.
-
config CMA_DEBUGFS
bool "CMA debugfs interface"
depends on CMA && DEBUG_FS
config CMA_AREAS
int "Maximum count of the CMA areas"
depends on CMA
- default 19 if NUMA
- default 7
+ default 20 if NUMA
+ default 8
help
CMA allows to create CMA areas for particular purpose, mainly,
used as device private area. This parameter sets the maximum
number of CMA area in the system.
- If unsure, leave the default value "7" in UMA and "19" in NUMA.
+ If unsure, leave the default value "8" in UMA and "20" in NUMA.
config MEM_SOFT_DIRTY
bool "Track memory changes"
See Documentation/admin-guide/mm/idle_page_tracking.rst for
more details.
+# Architectures which implement cpu_dcache_is_aliasing() to query
+# whether the data caches are aliased (VIVT or VIPT with dcache
+# aliasing) need to select this.
+config ARCH_HAS_CPU_CACHE_ALIASING
+ bool
+
config ARCH_HAS_CACHE_LINE_SIZE
bool
ifdef CONFIG_RUST
# `$(rust_flags)` is passed in case the user added `--sysroot`.
-rustc_sysroot := $(shell $(RUSTC) $(rust_flags) --print sysroot)
+rustc_sysroot := $(shell MAKEFLAGS= $(RUSTC) $(rust_flags) --print sysroot)
rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2)
RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library
-e 's:rust-logo-[0-9a-f]+\.svg:logo.svg:g' \
-e 's:favicon-[0-9a-f]+\.svg:logo.svg:g' \
-e 's:<link rel="alternate icon" type="image/png" href="[/.]+/static\.files/favicon-(16x16|32x32)-[0-9a-f]+\.png">::g' \
- -e 's:<a href="srctree/([^"]+)">:<a href="$(abs_srctree)/\1">:g'
+ -e 's:<a href="srctree/([^"]+)">:<a href="$(realpath $(srctree))/\1">:g'
$(Q)for f in $(rustdoc_output)/static.files/rustdoc-*.css; do \
echo ".logo-container > img { object-fit: contain; }" >> $$f; done
rustdoc-macros: private rustc_target_flags = --crate-type proc-macro \
--extern proc_macro
rustdoc-macros: $(src)/macros/lib.rs FORCE
- $(call if_changed,rustdoc)
+ +$(call if_changed,rustdoc)
rustdoc-core: private rustc_target_flags = $(core-cfgs)
rustdoc-core: $(RUST_LIB_SRC)/core/src/lib.rs FORCE
- $(call if_changed,rustdoc)
+ +$(call if_changed,rustdoc)
rustdoc-compiler_builtins: $(src)/compiler_builtins.rs rustdoc-core FORCE
- $(call if_changed,rustdoc)
+ +$(call if_changed,rustdoc)
# We need to allow `rustdoc::broken_intra_doc_links` because some
# `no_global_oom_handling` functions refer to non-`no_global_oom_handling`
rustdoc-alloc: private rustc_target_flags = $(alloc-cfgs) \
-Arustdoc::broken_intra_doc_links
rustdoc-alloc: $(src)/alloc/lib.rs rustdoc-core rustdoc-compiler_builtins FORCE
- $(call if_changed,rustdoc)
+ +$(call if_changed,rustdoc)
rustdoc-kernel: private rustc_target_flags = --extern alloc \
--extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \
rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \
rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \
$(obj)/bindings.o FORCE
- $(call if_changed,rustdoc)
+ +$(call if_changed,rustdoc)
quiet_cmd_rustc_test_library = RUSTC TL $<
cmd_rustc_test_library = \
--crate-name $(subst rusttest-,,$(subst rusttestlib-,,$@)) $<
rusttestlib-build_error: $(src)/build_error.rs rusttest-prepare FORCE
- $(call if_changed,rustc_test_library)
+ +$(call if_changed,rustc_test_library)
rusttestlib-macros: private rustc_target_flags = --extern proc_macro
rusttestlib-macros: private rustc_test_library_proc = yes
rusttestlib-macros: $(src)/macros/lib.rs rusttest-prepare FORCE
- $(call if_changed,rustc_test_library)
+ +$(call if_changed,rustc_test_library)
rusttestlib-bindings: $(src)/bindings/lib.rs rusttest-prepare FORCE
- $(call if_changed,rustc_test_library)
+ +$(call if_changed,rustc_test_library)
rusttestlib-uapi: $(src)/uapi/lib.rs rusttest-prepare FORCE
- $(call if_changed,rustc_test_library)
+ +$(call if_changed,rustc_test_library)
quiet_cmd_rustdoc_test = RUSTDOC T $<
cmd_rustdoc_test = \
$(src)/kernel/lib.rs $(obj)/kernel.o \
$(objtree)/scripts/rustdoc_test_builder \
$(objtree)/scripts/rustdoc_test_gen FORCE
- $(call if_changed,rustdoc_test_kernel)
+ +$(call if_changed,rustdoc_test_kernel)
# We cannot use `-Zpanic-abort-tests` because some tests are dynamic,
# so for the moment we skip `-Cpanic=abort`.
$(objtree)/$(obj)/test/sysroot/lib/rustlib/$(rustc_host_target)/lib
rusttest-prepare: FORCE
- $(call if_changed,rustsysroot)
+ +$(call if_changed,rustsysroot)
rusttest-macros: private rustc_target_flags = --extern proc_macro
rusttest-macros: private rustdoc_test_target_flags = --crate-type proc-macro
rusttest-macros: $(src)/macros/lib.rs rusttest-prepare FORCE
- $(call if_changed,rustc_test)
- $(call if_changed,rustdoc_test)
+ +$(call if_changed,rustc_test)
+ +$(call if_changed,rustdoc_test)
rusttest-kernel: private rustc_target_flags = --extern alloc \
--extern build_error --extern macros --extern bindings --extern uapi
rusttest-kernel: $(src)/kernel/lib.rs rusttest-prepare \
rusttestlib-build_error rusttestlib-macros rusttestlib-bindings \
rusttestlib-uapi FORCE
- $(call if_changed,rustc_test)
- $(call if_changed,rustc_test_library)
+ +$(call if_changed,rustc_test)
+ +$(call if_changed,rustc_test_library)
ifdef CONFIG_CC_IS_CLANG
bindgen_c_flags = $(c_flags)
# Derived from `scripts/Makefile.clang`.
BINDGEN_TARGET_x86 := x86_64-linux-gnu
+BINDGEN_TARGET_arm64 := aarch64-linux-gnu
BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH))
# All warnings are inhibited since GCC builds are very experimental,
# Therefore, to get `libmacros.so` automatically recompiled when the compiler
# version changes, we add `core.o` as a dependency (even if it is not needed).
$(obj)/libmacros.so: $(src)/macros/lib.rs $(obj)/core.o FORCE
- $(call if_changed_dep,rustc_procmacro)
+ +$(call if_changed_dep,rustc_procmacro)
quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@
cmd_rustc_library = \
rust-analyzer:
$(Q)$(srctree)/scripts/generate_rust_analyzer.py \
--cfgs='core=$(core-cfgs)' --cfgs='alloc=$(alloc-cfgs)' \
- $(abs_srctree) $(abs_objtree) \
+ $(realpath $(srctree)) $(realpath $(objtree)) \
$(RUST_LIB_SRC) $(KBUILD_EXTMOD) > \
$(if $(KBUILD_EXTMOD),$(extmod_prefix),$(objtree))/rust-project.json
$(obj)/core.o: private skip_flags = -Dunreachable_pub
$(obj)/core.o: private rustc_objcopy = $(foreach sym,$(redirect-intrinsics),--redefine-sym $(sym)=__rust$(sym))
$(obj)/core.o: private rustc_target_flags = $(core-cfgs)
-$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs scripts/target.json FORCE
- $(call if_changed_dep,rustc_library)
+$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs FORCE
+ +$(call if_changed_dep,rustc_library)
+ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),)
+$(obj)/core.o: scripts/target.json
+endif
$(obj)/compiler_builtins.o: private rustc_objcopy = -w -W '__*'
$(obj)/compiler_builtins.o: $(src)/compiler_builtins.rs $(obj)/core.o FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
$(obj)/alloc.o: private skip_clippy = 1
$(obj)/alloc.o: private skip_flags = -Dunreachable_pub
$(obj)/alloc.o: private rustc_target_flags = $(alloc-cfgs)
$(obj)/alloc.o: $(src)/alloc/lib.rs $(obj)/compiler_builtins.o FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
$(obj)/build_error.o: $(src)/build_error.rs $(obj)/compiler_builtins.o FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
$(obj)/bindings.o: $(src)/bindings/lib.rs \
$(obj)/compiler_builtins.o \
$(obj)/bindings/bindings_generated.rs \
$(obj)/bindings/bindings_helpers_generated.rs FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
$(obj)/uapi.o: $(src)/uapi/lib.rs \
$(obj)/compiler_builtins.o \
$(obj)/uapi/uapi_generated.rs FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
$(obj)/kernel.o: private rustc_target_flags = --extern alloc \
--extern build_error --extern macros --extern bindings --extern uapi
$(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \
$(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE
- $(call if_changed_dep,rustc_library)
+ +$(call if_changed_dep,rustc_library)
endif # CONFIG_RUST
# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))
+ subdir-dtbslist := $(sort $(filter %/dtbs-list, $(dtb-y)))
targets-for-builtin := $(extra-y)
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
- is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n),y)
+ is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(target-stem).o)$(OBJECT_FILES_NON_STANDARD)n),y)
$(obj)/%.o: objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y))
cmd_rustc_o_rs = $(rust_common_cmd) --emit=obj=$@ $<
$(obj)/%.o: $(src)/%.rs FORCE
- $(call if_changed_dep,rustc_o_rs)
+ +$(call if_changed_dep,rustc_o_rs)
quiet_cmd_rustc_rsi_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
cmd_rustc_rsi_rs = \
command -v $(RUSTFMT) >/dev/null && $(RUSTFMT) $@
$(obj)/%.rsi: $(src)/%.rs FORCE
- $(call if_changed_dep,rustc_rsi_rs)
+ +$(call if_changed_dep,rustc_rsi_rs)
quiet_cmd_rustc_s_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
cmd_rustc_s_rs = $(rust_common_cmd) --emit=asm=$@ $<
$(obj)/%.s: $(src)/%.rs FORCE
- $(call if_changed_dep,rustc_s_rs)
+ +$(call if_changed_dep,rustc_s_rs)
quiet_cmd_rustc_ll_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
cmd_rustc_ll_rs = $(rust_common_cmd) --emit=llvm-ir=$@ $<
$(obj)/%.ll: $(src)/%.rs FORCE
- $(call if_changed_dep,rustc_ll_rs)
+ +$(call if_changed_dep,rustc_ll_rs)
# Compile assembler sources (.S)
# ---------------------------------------------------------------------------
# To build objects in subdirs, we need to descend into the directories
$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
$(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
+ $(subdir-dtbslist): $(obj)/%/dtbs-list: $(obj)/% ;
#
# Rule to compile a set of .o files into one .a file (without symbol table)
$(call if_changed,ar_builtin)
#
- # Rule to create modules.order file
+ # Rule to create modules.order and dtbs-list
#
- # Create commands to either record .ko file or cat modules.order from
- # a subdirectory
- # Add $(obj-m) as the prerequisite to avoid updating the timestamp of
- # modules.order unless contained modules are updated.
+ # This is a list of build artifacts (module or dtb) from the current Makefile
+ # and its sub-directories. The timestamp should be updated when any of the
+ # member files.
- cmd_modules_order = { $(foreach m, $(real-prereqs), \
- $(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
+ cmd_gen_order = { $(foreach m, $(real-prereqs), \
+ $(if $(filter %/$(notdir $@), $m), cat $m, echo $m);) :; } \
> $@
$(obj)/modules.order: $(obj-m) FORCE
- $(call if_changed,modules_order)
+ $(call if_changed,gen_order)
+
+ $(obj)/dtbs-list: $(dtb-y) FORCE
+ $(call if_changed,gen_order)
#
# Rule to compile a set of .o files into one .a file (with symbol table)
obj-y := $(filter-out %/, $(obj-y))
endif
+ ifdef need-dtbslist
+ dtb-y += $(addsuffix /dtbs-list, $(subdir-ym))
+ always-y += dtbs-list
+ endif
+
# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals
suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s))))
# List composite targets that are constructed by combining other targets
real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))
+ dtb-y := $(addprefix $(obj)/, $(dtb-y))
multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))
real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
#
ifeq ($(CONFIG_GCOV_KERNEL),y)
_c_flags += $(if $(patsubst n%,, \
- $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
+ $(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
$(CFLAGS_GCOV))
endif
ifeq ($(CONFIG_KASAN),y)
ifneq ($(CONFIG_KASAN_HW_TAGS),y)
_c_flags += $(if $(patsubst n%,, \
- $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
+ $(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)y), \
$(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE))
endif
endif
ifeq ($(CONFIG_KMSAN),y)
_c_flags += $(if $(patsubst n%,, \
- $(KMSAN_SANITIZE_$(basetarget).o)$(KMSAN_SANITIZE)y), \
+ $(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)y), \
$(CFLAGS_KMSAN))
_c_flags += $(if $(patsubst n%,, \
- $(KMSAN_ENABLE_CHECKS_$(basetarget).o)$(KMSAN_ENABLE_CHECKS)y), \
+ $(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)y), \
, -mllvm -msan-disable-checks=1)
endif
ifeq ($(CONFIG_UBSAN),y)
_c_flags += $(if $(patsubst n%,, \
- $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)y), \
- $(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \
++ $(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)y), \
$(CFLAGS_UBSAN))
- $(UBSAN_SIGNED_WRAP_$(basetarget).o)$(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)y), \
+_c_flags += $(if $(patsubst n%,, \
++ $(UBSAN_SIGNED_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)y), \
+ $(CFLAGS_UBSAN_SIGNED_WRAP))
endif
ifeq ($(CONFIG_KCOV),y)
_c_flags += $(if $(patsubst n%,, \
- $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
+ $(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
$(CFLAGS_KCOV))
endif
#
ifeq ($(CONFIG_KCSAN),y)
_c_flags += $(if $(patsubst n%,, \
- $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \
+ $(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)y), \
$(CFLAGS_KCSAN))
# Some uninstrumented files provide implied barriers required to avoid false
# positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only.
_c_flags += $(if $(patsubst n%,, \
- $(KCSAN_INSTRUMENT_BARRIERS_$(basetarget).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \
+ $(KCSAN_INSTRUMENT_BARRIERS_$(target-stem).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \
-D__KCSAN_INSTRUMENT_BARRIERS__)
endif
objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label
objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr
-objtool-args-$(CONFIG_CALL_DEPTH_TRACKING) += --hacks=skylake
+objtool-args-$(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) += --hacks=skylake
objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt
objtool-args-$(CONFIG_FINEIBT) += --cfi
objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount
objtool-args-$(CONFIG_HAVE_OBJTOOL_NOP_MCOUNT) += --mnop
endif
objtool-args-$(CONFIG_UNWINDER_ORC) += --orc
-objtool-args-$(CONFIG_RETPOLINE) += --retpoline
-objtool-args-$(CONFIG_RETHUNK) += --rethunk
-objtool-args-$(CONFIG_SLS) += --sls
+objtool-args-$(CONFIG_MITIGATION_RETPOLINE) += --retpoline
+objtool-args-$(CONFIG_MITIGATION_RETHUNK) += --rethunk
+objtool-args-$(CONFIG_MITIGATION_SLS) += --sls
objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval
objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call
objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess
# DTC
# ---------------------------------------------------------------------------
DTC ?= $(objtree)/scripts/dtc/dtc
-DTC_FLAGS += -Wno-interrupt_provider \
+DTC_FLAGS += \
-Wno-unique_unit_address
# Disable noisy checks by default
ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)
DTC_FLAGS += -Wnode_name_chars_strict \
-Wproperty_name_chars_strict \
- -Winterrupt_provider \
-Wunique_unit_address
endif
- DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
+ DTC_FLAGS += $(DTC_FLAGS_$(target-stem))
# Set -@ if the target is a base DTB that overlay is applied onto
DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@)
sec_mismatch_count++;
warn("%s: section mismatch in reference: %s+0x%x (section: %s) -> %s (section: %s)\n",
- modname, fromsym, (unsigned int)(faddr - from->st_value), fromsec, tosym, tosec);
+ modname, fromsym,
+ (unsigned int)(faddr - (from ? from->st_value : 0)),
+ fromsec, tosym, tosec);
if (mismatch->mismatch == EXTABLE_TO_NON_TEXT) {
if (match(tosec, mismatch->bad_tosec))
buf_printf(b,
"\n"
- "#ifdef CONFIG_RETPOLINE\n"
+ "#ifdef CONFIG_MITIGATION_RETPOLINE\n"
"MODULE_INFO(retpoline, \"Y\");\n"
"#endif\n");
projects / linux.git / commitdiff