Let's treat this like a separate device. TCG will have to store the
actual state/time later on.

Include cpu-qom.h in kvm_s390x.h (due to S390CPU) to compile tod-kvm.c.
Reviewed-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20180627134410.4901-4-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

We are going to factor out the TOD into a separate device and use const
pointers for device class functions where possible. We are passing right
now ordinary pointers that should never be touched when setting the TOD.
Let's just pass the values directly.

Note that s390_set_clock() will be removed in a follow-on patch and
therefore its calling convention is not changed.
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20180627134410.4901-3-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

Not needed anymore after removal of the memory hotplug code.
Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

Let the flic device handle it internally. This will allow us to later
on store floating interrupts in the flic for the TCG case.

This now also simplifies kvm.c. All that's left is the fallback
interface for floating interrupts, which is now triggered directly via
the flic in case anything goes wrong.
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20180129125623.21729-6-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

We want to use the same code base for TCG, so let's cleanly factor it
out.

The sigp mutex is currently not really needed, as everything is
protected by the iothread mutex. But this could change later, so leave
it in place and initialize it properly from common code.
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-17-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

Preparation for factoring it out into !kvm code.
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-13-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

Provides an interface for getting and setting the guest's extended
TOD-Clock via a single ioctl to kvm. If the ioctl fails because it
is not support by kvm, then we fall back to the old style of
retrieving the clock via two ioctls.
Signed-off-by: NCollin L. Walling <walling@linux.vnet.ibm.com>
Reviewed-by: NEric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: NClaudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
[split failure change from epoch index change]
Message-Id: <20171004105751.24655-2-borntraeger@de.ibm.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>
[some cosmetic fixes]

Let's do it just like the other architectures. Introduce kvm-stub.c
for stubs and kvm_s390x.h for the declarations.

Change license to GPL2+ and keep copyright notice.

As we are dropping the sysemu/kvm.h include from cpu.h, fix up includes.
Suggested-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20170818114353.13455-18-david@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>