On Tue, 17 Apr 2018 09:49:58 +0200 "Harald Freudenberger" <FREUDE@xxxxxxxxxx> wrote: > Didn't we say that when APXA is not available there is no Crypto support > for KVM ? [Going by the code, as I don't have access to the architecture] Current status seems to be: - setup crycb if facility 76 is available (that's MSAX3, I guess?) - use format 2 if APXA is available, else use format 1 >From Tony's patch description, the goal seems to be: - setup crycb even if MSAX3 is not available So my understanding is that we use APXA only to decide on the format of the crycb, but provide it in any case? (Not providing a crycb if APXA is not available would be loss of functionality, I guess? Deciding not to provide vfio-ap if APXA is not available is a different game, of course.)