Those 3 new wrapper functions call the respective VFIO external
functions.
Signed-off-by: Eric Auger <[email protected]>
---
v4: creation
---
include/linux/vfio.h | 8 +++-----
virt/kvm/vfio.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 47 insertions(+), 5 deletions(-)
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index e04ca93..565f5f7 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -106,14 +106,12 @@ extern struct device *vfio_external_base_device(struct
vfio_device *vdev);
struct vfio_platform_device;
extern void vfio_external_mask(struct vfio_platform_device *vdev, int index);
/*
- * returns whether the VFIO IRQ is active:
- * true if not yet deactivated at interrupt controller level or if
- * automasked (level sensitive IRQ). Unfortunately there is no way to
- * discriminate between handler auto-masking and user-space masking
+ * returns whether the VFIO IRQ is active at interrupt controller level
+ * or VFIO-masked. Note that if the use-space masked the IRQ index it
+ * cannot be discriminated from automasked handler situation.
*/
extern bool vfio_external_is_active(struct vfio_platform_device *vdev,
int index);
-
extern void vfio_external_set_automasked(struct vfio_platform_device *vdev,
int index, bool automasked);
diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index 80a45e4..c995e51 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -134,6 +134,50 @@ static void kvm_vfio_put_vfio_device(struct vfio_device
*vdev)
kvm_vfio_device_put_external_user(vdev);
}
+bool kvm_vfio_external_is_active(struct vfio_platform_device *vpdev,
+ int index)
+{
+ bool (*fn)(struct vfio_platform_device *, int index);
+ bool active;
+
+ fn = symbol_get(vfio_external_is_active);
+ if (!fn)
+ return -1;
+
+ active = fn(vpdev, index);
+
+ symbol_put(vfio_external_is_active);
+ return active;
+}
+
+void kvm_vfio_external_mask(struct vfio_platform_device *vpdev,
+ int index)
+{
+ void (*fn)(struct vfio_platform_device *, int index);
+
+ fn = symbol_get(vfio_external_mask);
+ if (!fn)
+ return;
+
+ fn(vpdev, index);
+
+ symbol_put(vfio_external_mask);
+}
+
+void kvm_vfio_external_set_automasked(struct vfio_platform_device *vpdev,
+ int index, bool automasked)
+{
+ void (*fn)(struct vfio_platform_device *, int index, bool automasked);
+
+ fn = symbol_get(vfio_external_set_automasked);
+ if (!fn)
+ return;
+
+ fn(vpdev, index, automasked);
+
+ symbol_put(vfio_external_set_automasked);
+}
+
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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