On Thu, Mar 05, 2020 at 11:32:10PM -0600, Dr. Greg wrote: > On Wed, Mar 04, 2020 at 01:36:01AM +0200, Jarkko Sakkinen wrote: > > Good evening, I hope the end of the week is going well for everyone. > > > Add a selftest for SGX. It is a trivial test where a simple enclave > > copies one 64-bit word of memory between two memory locations given > > to the enclave as arguments. Use ENCLS[EENTER] to invoke the > > enclave. > > Just as a clarification, are you testing the new driver against signed > production class enclaves in .so format that also include metadata > layout directives or is the driver just getting tested against the two > page toy enclave that copies a word of memory from one memory location > to another? That is the kind of role kselftests to smoke stuff. Obviously it will be refined over time but to do a "hello world" from scratch as an enclave was already quite a big effort. > Our PSW/runtime is currently failing to initialize production class > enclaves secondary to a return value of -4 from the ENCLU[EINIT] > instruction, which means the measurement of the loaded enclave has > failed to match the value in the signature structure. > > The same enclave loads fine with the out of kernel driver. Our > diagnostics tell us we are feeding identical page streams and > permissions to the page add ioctl's of both drivers. The identity > modulus signature of the signing key for the enclave is being written > to the launch control registers. > > We see the same behavior from both our unit test enclaves and the > Quoting Enclave from the Intel SGX runtime. > > When we ported our runtime loader to the new driver ABI we kept things > simple and add only a single page at a time in order to replicate the > behavior of the old driver. > > Secondly, we were wondering what distribution you are building the > self-tests with? Initial indications are that the selftest signing > utility doesn't build properly with OpenSSL 1.1.1. I don't use a distribution. I just build user space with BuildRoot when I test a kernel. Do you have a build log available to look at? /Jarkko
