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| author | Mark Rutland <mark.rutland@arm.com> | 2021-07-15 13:30:49 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-07-15 17:37:55 +0100 |
| commit | e6f85cbeb23bd74b8966cf1f15bf7d01399ff625 (patch) | |
| tree | 6e219fbc9ce7ba628e6539327708d29d7762b70d | |
| parent | 31a7f0f6c8f392f002c937f34f372943cf8be5a9 (diff) | |
| download | staging-e6f85cbeb23bd74b8966cf1f15bf7d01399ff625.tar.gz | |
arm64: entry: fix KCOV suppression
We suppress KCOV for entry.o rather than entry-common.o. As entry.o is
built from entry.S, this is pointless, and permits instrumentation of
entry-common.o, which is built from entry-common.c.
Fix the Makefile to suppress KCOV for entry-common.o, as we had intended
to begin with. I've verified with objdump that this is working as
expected.
Fixes: bf6fa2c0dda7 ("arm64: entry: don't instrument entry code with KCOV")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210715123049.9990-1-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | arch/arm64/kernel/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index cce308586fcc44..3f1490bfb938a0 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -17,7 +17,7 @@ CFLAGS_syscall.o += -fno-stack-protector # It's not safe to invoke KCOV when portions of the kernel environment aren't # available or are out-of-sync with HW state. Since `noinstr` doesn't always # inhibit KCOV instrumentation, disable it for the entire compilation unit. -KCOV_INSTRUMENT_entry.o := n +KCOV_INSTRUMENT_entry-common.o := n KCOV_INSTRUMENT_idle.o := n # Object file lists. |