[PATCH] Disable kcov for slb routines.

[Andrew Donnellan]

On 4/3/19 7:25 pm, Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
> 
> 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 at linux.vnet.ibm.com>

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 at au1.ibm.com>



-- 
Andrew Donnellan              OzLabs, ADL Canberra
andrew.donnellan at au1.ibm.com  IBM Australia Limited