Re: [RFC v5 00/38] powerpc: Memory Protection Keys
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2017-07-11 22:09:21
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linux-arch, linux-mm, lkml
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.