On Thu, Jul 11, 2019 at 08:50:37AM -0700, Sean Christopherson wrote: > On Thu, Jul 11, 2019 at 12:38:09PM +0300, Jarkko Sakkinen wrote: > > On Wed, Jul 10, 2019 at 04:37:41PM -0700, Xing, Cedric wrote: > > > We are not judging which vessel is better (or the best) among all possible > > > vessels. We are trying to enable more vessels. Every vessel has its pros and > > > cons so there's *no* single best vessel. > > > > I think reasonable metric is actually the coverage of the Intel SDK > > based enclaves. How widely are they in the wild? If the user base is > > large, it should be reasonable to support this just based on that. > > Large enough that Andy agreed to take the vDSO code with the optional > callback, despite his personal opinion being that mucking with uR{B,S}P > from within the enclave is poor form. OK, the cover letter empahasized things that did not make sense to me, which made me to do my initial conclusions. I don't recall even reading the word "coverage" from it. Anyways, I'm sure we can land this after v21 has been published now that the rationale is clear. /Jarkko