On Mon, 24 Feb 2020 06:40:43 -0500 Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote: > From: Janosch Frank <frankja@xxxxxxxxxxxxx> > > Since there is no interception for load control and load psw > instruction in the protected mode, we need a new way to get notified > whenever we can inject an IRQ right after the guest has just enabled > the possibility for receiving them. > > The new interception codes solve that problem by providing a > notification for changes to IRQ enablement relevant bits in CRs 0, 6 > and 14, as well a the machine check mask bit in the PSW. > > No special handling is needed for these interception codes, the KVM > pre-run code will consult all necessary CRs and PSW bits and inject > IRQs the guest is enabled for. > > Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> > Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> > Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx> > [borntraeger@xxxxxxxxxx: patch merging, splitting, fixing] > Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> > --- > arch/s390/include/asm/kvm_host.h | 2 ++ > arch/s390/kvm/intercept.c | 11 ++++++++++- > 2 files changed, 12 insertions(+), 1 deletion(-) Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
