On Tue, Sep 03, 2019 at 05:26:36PM +0300, Jarkko Sakkinen wrote: > Document ENCLS architectural error codes. These error codes are returned by > the SGX opcodes. Make the header as part of the uapi so that they can be > used in some situations directly returned to the user space (ENCLS[EINIT] > leaf function error codes could be one potential use case). > > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> > Co-developed-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> > Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> > --- > arch/x86/include/uapi/asm/sgx_errno.h | 91 +++++++++++++++++++++++++++ > 1 file changed, 91 insertions(+) > create mode 100644 arch/x86/include/uapi/asm/sgx_errno.h > > diff --git a/arch/x86/include/uapi/asm/sgx_errno.h b/arch/x86/include/uapi/asm/sgx_errno.h > new file mode 100644 > index 000000000000..48b87aed58d7 > --- /dev/null > +++ b/arch/x86/include/uapi/asm/sgx_errno.h > @@ -0,0 +1,91 @@ > +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ > +/* > + * Copyright(c) 2018 Intel Corporation. > + * > + * Contains the architecturally defined error codes that are returned by SGX > + * instructions, e.g. ENCLS, and may be propagated to userspace via errno. > + */ > + > +#ifndef _UAPI_ASM_X86_SGX_ERRNO_H > +#define _UAPI_ASM_X86_SGX_ERRNO_H > + > +/** > + * enum sgx_encls_leaves - return codes for ENCLS, ENCLU and ENCLV > + * %SGX_SUCCESS: No error. > + * %SGX_INVALID_SIG_STRUCT: SIGSTRUCT contains an invalid value. > + * %SGX_INVALID_ATTRIBUTE: Enclave is not attempting to access a resource That first "not" looks wrong. > + * for which it is not authorized. > + * %SGX_BLKSTATE: EPC page is already blocked. > + * %SGX_INVALID_MEASUREMENT: SIGSTRUCT or EINITTOKEN contains an incorrect > + * measurement. > + * %SGX_NOTBLOCKABLE: EPC page type is not one which can be blocked. > + * %SGX_PG_INVLD: EPC page is invalid (and cannot be blocked). > + * %SGX_EPC_PAGE_CONFLICT: EPC page in use by another SGX instruction. > + * %SGX_INVALID_SIGNATURE: Enclave's signature does not validate with > + * public key enclosed in SIGSTRUCT. > + * %SGX_MAC_COMPARE_FAIL: MAC check failed when reloading EPC page. > + * %SGX_PAGE_NOT_BLOCKED: EPC page is not marked as blocked. > + * %SGX_NOT_TRACKED: ETRACK has not been completed on the EPC page. > + * %SGX_VA_SLOT_OCCUPIED: Version array slot contains a valid entry. > + * %SGX_CHILD_PRESENT: Enclave has child pages present in the EPC. > + * %SGX_ENCLAVE_ACT: Logical processors are currently executing > + * inside the enclave. > + * %SGX_ENTRYEPOCH_LOCKED: SECS locked for EPOCH update, i.e. an ETRACK is > + * currently executing on the SECS. > + * %SGX_INVALID_EINITTOKEN: EINITTOKEN is invalid and enclave signer's > + * public key does not match IA32_SGXLEPUBKEYHASH. > + * %SGX_PREV_TRK_INCMPL: All processors did not complete the previous > + * tracking sequence. > + * %SGX_PG_IS_SECS: Target EPC page is an SECS and cannot be > + * blocked. > + * %SGX_PAGE_ATTRIBUTES_MISMATCH: Attributes of the EPC page do not match > + * the expected values. You sometimes call it "PG" and sometimes "PAGE". Unify? > + * %SGX_PAGE_NOT_MODIFIABLE: EPC page cannot be modified because it is in > + * the PENDING or MODIFIED state. > + * %SGX_PAGE_NOT_DEBUGGABLE: EPC page cannot be modified because it is in > + * the PENDING or MODIFIED state. Same description text? ... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette