From: Ard Biesheuvel Date: Wed, 29 Nov 2023 11:15:57 +0000 (+0100) Subject: arm64: kernel: Disable latent_entropy GCC plugin in early C runtime X-Git-Tag: v6.8-rc1~200^2~8^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3dfdc2750c6cdc6a5ebf5effb07f92db761de35d;p=thirdparty%2Fkernel%2Flinux.git arm64: kernel: Disable latent_entropy GCC plugin in early C runtime In subsequent patches, mark portions of the early C code will be marked as __init. Unfortunarely, __init implies __latent_entropy, and this would result in the early C code being instrumented in an unsafe manner. Disable the latent entropy plugin for the early C code. Acked-by: Mark Rutland Signed-off-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20231129111555.3594833-44-ardb@google.com Signed-off-by: Will Deacon --- diff --git a/arch/arm64/kernel/pi/Makefile b/arch/arm64/kernel/pi/Makefile index 4c0ea3cd4ea40..c844a0546d7f0 100644 --- a/arch/arm64/kernel/pi/Makefile +++ b/arch/arm64/kernel/pi/Makefile @@ -3,6 +3,7 @@ KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \ -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \ + $(DISABLE_LATENT_ENTROPY_PLUGIN) \ $(call cc-option,-mbranch-protection=none) \ -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \ -include $(srctree)/include/linux/hidden.h \