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| author | Andrew Donnellan <andrew.donnellan@au1.ibm.com> | 2019-02-22 03:40:46 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-23 13:04:32 +0300 |
| commit | fb0b0a73b223fc113e961b1d921322844e9c30d9 (patch) | |
| tree | 6434650ccfc25f1b878f5f449eb3fcc6b27a21aa /arch/powerpc/mm | |
| parent | 8f54a6f7406ee3b7b528c3ff569f6a51295b2608 (diff) | |
| download | linux-fb0b0a73b223fc113e961b1d921322844e9c30d9.tar.xz | |
powerpc: Enable kcov
kcov provides kernel coverage data that's useful for fuzzing tools like
syzkaller.
Wire up kcov support on powerpc. Disable kcov instrumentation on the same
files where we currently disable gcov and UBSan instrumentation, plus some
additional exclusions which appear necessary to boot on book3e machines.
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Daniel Axtens <dja@axtens.net> # e6500
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index ee1efa3b3382..d52ec118e09d 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -47,3 +47,8 @@ obj-$(CONFIG_PPC_COPRO_BASE) += copro_fault.o obj-$(CONFIG_SPAPR_TCE_IOMMU) += mmu_context_iommu.o obj-$(CONFIG_PPC_PTDUMP) += ptdump/ obj-$(CONFIG_PPC_MEM_KEYS) += pkeys.o + +# Disable kcov instrumentation on sensitive code +# This is necessary for booting with kcov enabled on book3e machines +KCOV_INSTRUMENT_tlb_nohash.o := n +KCOV_INSTRUMENT_fsl_booke_mmu.o := n |