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Date:   Wed, 31 Aug 2022 23:13:59 +1000
From:   Michael Ellerman <>
To:, Russell Currey <>
Subject: Re: [PATCH v4 1/2] powerpc/mm: Support execute-only memory on the Radix MMU

On Wed, 17 Aug 2022 15:06:39 +1000, Russell Currey wrote:
> Add support for execute-only memory (XOM) for the Radix MMU by using an
> execute-only mapping, as opposed to the RX mapping used by powerpc's
> other MMUs.
> The Hash MMU already supports XOM through the execute-only pkey,
> which is a separate mechanism shared with x86.  A PROT_EXEC-only mapping
> will map to RX, and then the pkey will be applied on top of it.
> [...]

Applied to powerpc/next.

[1/2] powerpc/mm: Support execute-only memory on the Radix MMU
[2/2] selftests/powerpc: Add a test for execute-only memory


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