On Thu, 2020-05-14 at 09:15 -0700, Sean Christopherson wrote: > On Thu, May 14, 2020 at 04:16:37AM -0500, Dr. Greg wrote: > > What we would recommend at this point is that you and Jarkko do the > > Linux community and beyond a favor and wire up a simple kernel > > command-line parameter that controls the ability of the driver to be > > used, ie. enables/disables access to /dev/sgx/enclave. > > I'm not opposed to adding a kernel param to disable SGX. At one point > there was a proposal to extend clearcpuid to allow disabling multiple > feature bits, but it looks like that went the way of the dodo. > > Note, such a param would disable SGX entirely, e.g. clear the feature bit > in /proc/cpuinfo and prevent any in-kernel SGX code from running. Greg, you are free to submit a patch for review that adds any possible kernel command line parameter SGX and beyond. SGX support does not "wire up" anything that would prevent reviewing such patches. /Jarkko
