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Date: Wed, 31 Aug 2022 23:13:59 +1000 From: Michael Ellerman <patch-notifications@...erman.id.au> To: linuxppc-dev@...ts.ozlabs.org, Russell Currey <ruscur@...sell.cc> Cc: mpe@...erman.id.au, npiggin@...il.com, aneesh.kumar@...ux.ibm.com, linux-hardening@...r.kernel.org, christophe.leroy@...roup.eu, ajd@...ux.ibm.com, nicholas@...ux.ibm.com, anshuman.khandual@....com 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 https://git.kernel.org/powerpc/c/395cac7752b905318ae454a8b859d4c190485510 [2/2] selftests/powerpc: Add a test for execute-only memory https://git.kernel.org/powerpc/c/98acee3f8db451eaab9fbd422e523c228aacf08c cheers
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