On Sun, 26 Jul 2020 18:55:17 +0530, Aneesh Kumar K.V wrote:
> POWER6 only support AMR update via privileged mode(MSR[PR] = 0, SPRN_AMR=29)
> The PR=1 alias for that SPR (SPRN_AMR=13) was only supported
> from POWER7. Since we don't allow userspace modifying of AMR value
> we should disable pkey support on P6 and before.
>
> The hypervisor will still report pkey support via ibm,processor-storage-keys.
> Hence check for P7 CPU_FTR bit to decide on pkey support.
Applied to powerpc/next.
[1/1] powerpc/book3s64/pkey: Disable pkey on POWER6 and before
https://git.kernel.org/powerpc/c/269e829f48a0d0d27667abe25ca5c9e5b6ab08e2
cheers
