Re: [PATCH] Disable kcov for slb routines.
On Mon, Mar 04, 2019 at 01:55:51PM +0530, Mahesh J Salgaonkar wrote: > From: Mahesh Salgaonkar > > 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 > --- > arch/powerpc/mm/Makefile |1 + > 1 file changed, 1 insertion(+) Fixes: https://github.com/linuxppc/issues/issues/230 Tested-by: Satheesh Rajendran > > diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile > index d4d32e229ace..f9cb40684746 100644 > --- a/arch/powerpc/mm/Makefile > +++ b/arch/powerpc/mm/Makefile > @@ -60,3 +60,4 @@ obj-$(CONFIG_PPC_MEM_KEYS) += pkeys.o > # This is necessary for booting with kcov enabled on book3e machines > KCOV_INSTRUMENT_tlb_nohash.o := n > KCOV_INSTRUMENT_fsl_booke_mmu.o := n > +KCOV_INSTRUMENT_slb.o := n >
Re: [PATCH] Disable kcov for slb routines.
On 4/3/19 7:25 pm, Mahesh J Salgaonkar wrote: From: Mahesh Salgaonkar The kcov instrumentation inside SLB routines causes duplicate SLB entries to be added resulting into SLB multihit machine checks. Disable kcov instrumentation on slb.o Signed-off-by: Mahesh Salgaonkar Summary line needs a powerpc: --- arch/powerpc/mm/Makefile |1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index d4d32e229ace..f9cb40684746 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -60,3 +60,4 @@ obj-$(CONFIG_PPC_MEM_KEYS)+= pkeys.o # This is necessary for booting with kcov enabled on book3e machines KCOV_INSTRUMENT_tlb_nohash.o := n KCOV_INSTRUMENT_fsl_booke_mmu.o := n +KCOV_INSTRUMENT_slb.o := n The SLB stuff isn't related to the book3e issues, I'd appreciate a separate comment here. Otherwise Acked-by: Andrew Donnellan -- Andrew Donnellan OzLabs, ADL Canberra andrew.donnel...@au1.ibm.com IBM Australia Limited
[PATCH] Disable kcov for slb routines.
From: Mahesh Salgaonkar 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 --- arch/powerpc/mm/Makefile |1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index d4d32e229ace..f9cb40684746 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -60,3 +60,4 @@ obj-$(CONFIG_PPC_MEM_KEYS)+= pkeys.o # This is necessary for booting with kcov enabled on book3e machines KCOV_INSTRUMENT_tlb_nohash.o := n KCOV_INSTRUMENT_fsl_booke_mmu.o := n +KCOV_INSTRUMENT_slb.o := n
