I get this when trying to get EAUG-EACCEPTCOPY to run on Enarx and I get: Unexpected PF: address: 0x007f7fff910000, error code 0x15 I'm using patches from: https://github.com/rchatre/linux/tree/sgx/sgx2_submitted_v2_plus_rwx Fault code is in other words PROT|WRITE|USER|RSVD. According to arch/x86/kernel/fault.c: /* * Reserved bits are never expected to be set on * entries in the user portion of the page tables. */ if (unlikely(error_code & X86_PF_RSVD)) pgtable_bad(regs, error_code, address); Any clue how this fault code could emit? [*] https://github.com/enarx/enarx/pull/1608 BR, Jarkko