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Subject: Re: [RFC v5 00/38] powerpc: Memory Protection Keys
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Ram Pai <linuxram@us.ibm.com>, Michal Hocko <mhocko@kernel.org>
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Date: Wed, 12 Jul 2017 07:30:49 +1000
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On Tue, 2017-07-11 at 12:32 -0700, Ram Pai wrote:
> Ideally the MMU looks at the PTE for keys, in order to enforce
> protection. This is the case with x86 and is the case with power9 Radix
> page table. Hence the keys have to be programmed into the PTE.

POWER9 radix doesn't currently support keys.

Cheers,
Ben.

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [RFC v5 00/38] powerpc: Memory Protection Keys
Date: Wed, 12 Jul 2017 07:30:49 +1000
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On Tue, 2017-07-11 at 12:32 -0700, Ram Pai wrote:
> Ideally the MMU looks at the PTE for keys, in order to enforce
> protection. This is the case with x86 and is the case with power9 Radix
> page table. Hence the keys have to be programmed into the PTE.

POWER9 radix doesn't currently support keys.

Cheers,
Ben.

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