diff options
| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /arch/xtensa/Makefile | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'arch/xtensa/Makefile')
| -rw-r--r-- | arch/xtensa/Makefile | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile new file mode 100644 index 000000000..4c14a0217 --- /dev/null +++ b/arch/xtensa/Makefile @@ -0,0 +1,77 @@ +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 2001 - 2005 Tensilica Inc. +# Copyright (C) 2014 Cadence Design Systems Inc. +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. + +# Core configuration. +# (Use VAR=<xtensa_config> to use another default compiler.) + +variant-y := $(CONFIG_XTENSA_VARIANT_NAME) + +VARIANT = $(variant-y) + +ifneq ($(VARIANT),) + ifdef cross_compiling + ifndef CROSS_COMPILE + CROSS_COMPILE = xtensa_$(VARIANT)- + endif + endif +endif + +# Platform configuration + +platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000 +platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss +platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga + +# temporarily until string.h is fixed +KBUILD_CFLAGS += -ffreestanding -D__linux__ +KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals +KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) +KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,) +KBUILD_CFLAGS += $(call cc-option,-mno-fdpic,) +ifneq ($(CONFIG_KERNEL_ABI_CALL0),) +KBUILD_CFLAGS += -mabi=call0 +KBUILD_AFLAGS += -mabi=call0 +endif + +KBUILD_AFLAGS += -mlongcalls -mtext-section-literals +KBUILD_AFLAGS += $(call cc-option,-mno-fdpic,) + +KBUILD_LDFLAGS += -m elf32xtensa + +ifneq ($(CONFIG_LD_NO_RELAX),) +KBUILD_LDFLAGS += --no-relax +endif + +CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__) + +vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) +plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) + +KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) + +KBUILD_DEFCONFIG := iss_defconfig + +libs-y += arch/xtensa/lib/ + +boot := arch/xtensa/boot + +all Image zImage uImage xipImage: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $@ + +archheaders: + $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all + +define archhelp + @echo '* Image - Kernel ELF image with reset vector' + @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' + @echo '* uImage - U-Boot wrapped image' + @echo ' xipImage - XIP image' +endef |