Hello, On Wed, Aug 31, 2022 at 11:13:59PM +1000, Michael Ellerman wrote: > 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
This breaks libaio tests (on POWER9 hash PowerVM): https://pagure.io/libaio/blob/master/f/harness/cases/5.t#_43 cases/5.p expect 512: (w), res = 512 [Success] expect 512: (r), res = 512 [Success] expect 512: (r), res = 512 [Success] expect 512: (w), res = 512 [Success] expect 512: (w), res = 512 [Success] expect -14: (r), res = -14 [Bad address] expect 512: (r), res = 512 [Success] expect 512: (w), res = 512 [Success] test cases/5.t completed PASSED. cases/5.p expect 512: (w), res = 512 [Success] expect 512: (r), res = 512 [Success] expect 512: (r), res = 512 [Success] expect 512: (w), res = 512 [Success] expect 512: (w), res = 512 [Success] expect -14: (r), res = -14 [Bad address] expect 512: (r), res = 512 [Success] expect -14: (w), res = 512 [Success] -- FAILED test cases/5.t completed FAILED. Can you have a look if that test assumption is OK? Thanks Michal
