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SubjectRe: [RFC v2 10/12] powerpc: Read AMR only if pkey-violation caused the exception.
Date
Ram Pai <linuxram@us.ibm.com> writes:

> Signed-off-by: Ram Pai <linuxram@us.ibm.com>
> ---
> arch/powerpc/kernel/exceptions-64s.S | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
> index 8db9ef8..a4de1b4 100644
> --- a/arch/powerpc/kernel/exceptions-64s.S
> +++ b/arch/powerpc/kernel/exceptions-64s.S
> @@ -493,13 +493,15 @@ EXC_COMMON_BEGIN(data_access_common)
> ld r12,_MSR(r1)
> ld r3,PACA_EXGEN+EX_DAR(r13)
> lwz r4,PACA_EXGEN+EX_DSISR(r13)
> + std r3,_DAR(r1)
> + std r4,_DSISR(r1)
> #ifdef CONFIG_PPC64_MEMORY_PROTECTION_KEYS
> + andis. r0,r4,DSISR_KEYFAULT@h /* save AMR only if its a key fault */
> + beq+ 1f

This seems to be incremental on top of one of your other patches.

But I don't see why, can you please just squash this into whatever patch
adds this code in the first place.

cheers

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