On Mon, 10 Dec 2012 08:53:41 +0100
Alexander Graf <agraf@xxxxxxx> wrote:
>
> On 07.12.2012, at 13:30, Cornelia Huck wrote:
>
> > Explicitely catch all channel I/O related instructions intercepts
> > in the kernel and set condition code 3 for them.
> >
> > This paves the way for properly handling these instructions later
> > on.
> >
> > Note: This is not architecture compliant (the previous code wasn't
> > either) since setting cc 3 is not the correct thing to do for some
> > of these instructions. For Linux guests, however, it still has the
> > intended effect of stopping css probing.
> >
> > Reviewed-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
> > Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
> > ---
> > arch/s390/kvm/intercept.c | 19 +++++++++++++---
> > arch/s390/kvm/kvm-s390.h | 1 +
> > arch/s390/kvm/priv.c | 56 +++++++++++++++++++++++++++++++++--------------
> > 3 files changed, 56 insertions(+), 20 deletions(-)
> >
> > diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
> > index ec1177f..754dc9e 100644
> > --- a/arch/s390/kvm/intercept.c
> > +++ b/arch/s390/kvm/intercept.c
> > @@ -33,8 +33,6 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
> > int reg, rc;
> >
> > vcpu->stat.instruction_lctlg++;
> > - if ((vcpu->arch.sie_block->ipb & 0xff) != 0x2f)
> > - return -EOPNOTSUPP;
> >
> > useraddr = disp2;
> > if (base2)
> > @@ -104,6 +102,21 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
> > return 0;
> > }
> >
> > +static intercept_handler_t eb_handlers[256] = {
>
> const.
>
> Reviewed-by: Alexander Graf <agraf@xxxxxxx>
Thanks.
>
>
> Alex
>
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