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Subject[RFC v6 11/16] KVM: kvm-vfio: wrappers for vfio_external_{mask|is_active|set_automasked}
Date
Those 3 new wrapper functions call the respective VFIO external
functions.

Signed-off-by: Eric Auger <eric.auger@linaro.org>

---

- v4: creation
- v5 -> v6:
x vfio.h modifications duly moved in "VFIO: platform: add
vfio_external_{mask|is_active|set_automasked}"
x all external functions use vfio_device handle
x change proto of above function (unsigned index, unsigned start,
unsigned count); also return int.
---
virt/kvm/vfio.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)

diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index 80a45e4..f4e86d3 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -134,6 +134,58 @@ static void kvm_vfio_put_vfio_device(struct vfio_device *vdev)
kvm_vfio_device_put_external_user(vdev);
}

+int kvm_vfio_external_is_active(struct vfio_device *vdev,
+ unsigned index, unsigned start, unsigned count)
+{
+ int (*fn)(struct vfio_device *, unsigned index, unsigned start,
+ unsigned count);
+ bool active;
+
+ fn = symbol_get(vfio_external_is_active);
+ if (!fn)
+ return -ENXIO;
+
+ active = fn(vdev, index, start, count);
+
+ symbol_put(vfio_external_is_active);
+ return active;
+}
+
+int kvm_vfio_external_mask(struct vfio_device *vdev, unsigned index,
+ unsigned start, unsigned count)
+{
+ int ret;
+ int (*fn)(struct vfio_device *, unsigned index, unsigned start,
+ unsigned count);
+
+ fn = symbol_get(vfio_external_mask);
+ if (!fn)
+ return -ENXIO;
+
+ ret = fn(vdev, index, start, count);
+
+ symbol_put(vfio_external_mask);
+ return ret;
+}
+
+int kvm_vfio_external_set_automasked(struct vfio_device *vdev,
+ unsigned index, unsigned start,
+ unsigned count, bool automasked)
+{
+ int ret;
+ int (*fn)(struct vfio_device *, unsigned index, unsigned start,
+ unsigned count, bool automasked);
+
+ fn = symbol_get(vfio_external_set_automasked);
+ if (!fn)
+ return -ENXIO;
+
+ ret = fn(vdev, index, start, count, automasked);
+
+ symbol_put(vfio_external_set_automasked);
+ return ret;
+}
+
static bool kvm_vfio_group_is_coherent(struct vfio_group *vfio_group)
{
long (*fn)(struct vfio_group *, unsigned long);
--
1.9.1


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