On Fri, 13 Oct 2017 13:39:04 -0400 Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx> wrote: > Sets up the following facilities bits to enable the specified AP > facilities for the guest VM: > * STFLE.12: Enables the AP Query Configuration Information > facility. The AP bus running in the guest uses > the information returned from this instruction > to configure AP adapters and domains for the > guest machine. > * STFLE.15: Indicates the AP facilities test is available. > The AP bus running in the guest uses the > information. > > Signed-off-by: Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx> > --- > arch/s390/tools/gen_facilities.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c > index 70dd8f1..eeaa7db 100644 > --- a/arch/s390/tools/gen_facilities.c > +++ b/arch/s390/tools/gen_facilities.c > @@ -74,8 +74,10 @@ struct facility_def { > 8, /* enhanced-DAT 1 */ > 9, /* sense-running-status */ > 10, /* conditional sske */ > + 12, /* AP query configuration */ > 13, /* ipte-range */ > 14, /* nonquiescing key-setting */ > + 15, /* AP special-command facility */ > 73, /* transactional execution */ > 75, /* access-exception-fetch/store indication */ > 76, /* msa extension 3 */ With this all KVM guests will always have the AP instructions available, no? In principles I like this approach, but it differs from the way z/VM does things, there the guest will get an exception if it tries to execute an AP instruction if there are no AP devices assigned to the guest. I wonder if there is a reason why z/VM does it the way it does. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html