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arm64: kernel: Disable latent_entropy GCC plugin in early C runtime

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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 <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20231129111555.3594833-44-ardb@google.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Ard Biesheuvel 2023-11-29 12:15:57 +01:00 committed by Will Deacon
parent b1366d21da
commit 3dfdc2750c
1 changed files with 1 additions and 0 deletions
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arch/arm64/kernel/pi/Makefile
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@ -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 \