On Mon, 10 Feb 2020 19:34:56 +0100 Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote: > On 10.02.20 18:53, Cornelia Huck wrote: > > On Fri, 7 Feb 2020 06:39:47 -0500 > > Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote: > > > >> From: Janosch Frank <frankja@xxxxxxxxxxxxx> > >> > >> A lot of the registers are controlled by the Ultravisor and never > >> visible to KVM. Some fields in the sie control block are overlayed, > >> like gbea. As no userspace uses the ONE_REG interface on s390 it is safe > >> to disable this for protected guests. > > > > Last round, I suggested > > > > "As no known userspace uses the ONE_REG interface on s390 if sync regs > > are available, no functionality is lost if it is disabled for protected > > guests." > > If you think this variant is better I can use this, I am fine with either. Well, yes :) I was afraid that it fell through the cracks. > > > > Any opinion on that? > > > >> > >> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> > >> Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx> > >> Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx> > >> [borntraeger@xxxxxxxxxx: patch merging, splitting, fixing] > >> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> > >> --- > >> Documentation/virt/kvm/api.txt | 6 ++++-- > >> arch/s390/kvm/kvm-s390.c | 3 +++ > >> 2 files changed, 7 insertions(+), 2 deletions(-) > > >
