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powerpc/mm: Disable kcov for SLB routines

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The kcov instrumentation inside SLB routines causes duplicate SLB
entries to be added resulting into SLB multihit machine checks.
Disable kcov instrumentation on slb.o

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mahesh Salgaonkar 2019-03-04 13:55:51 +05:30 committed by Michael Ellerman
parent e585f51c4e
commit 19d6907521
1 changed files with 3 additions and 0 deletions
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arch/powerpc/mm/Makefile
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@ -52,3 +52,6 @@ obj-$(CONFIG_PPC_MEM_KEYS) += pkeys.o
# This is necessary for booting with kcov enabled on book3e machines # This is necessary for booting with kcov enabled on book3e machines
KCOV_INSTRUMENT_tlb_nohash.o := n KCOV_INSTRUMENT_tlb_nohash.o := n
KCOV_INSTRUMENT_fsl_booke_mmu.o := n KCOV_INSTRUMENT_fsl_booke_mmu.o := n
# Instrumenting the SLB fault path can lead to duplicate SLB entries
KCOV_INSTRUMENT_slb.o := n