diff options
| author |   Pierre Morel <pmorel@linux.ibm.com> | 2019-05-21 17:34:35 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2019-07-02 16:00:28 +0200 |
| commit | 62e358ce586b53562a5efcfdbaddc5bd285e6484 (patch) | |
| tree | 0aec338cb0a250b4bbae7f635989e1df3d3fd28b /drivers/s390/crypto/vfio_ap_private.h | |
| parent | s390: ap: kvm: add PQAP interception for AQIC (diff) | |
| download | linux-dev-62e358ce586b53562a5efcfdbaddc5bd285e6484.tar.xz linux-dev-62e358ce586b53562a5efcfdbaddc5bd285e6484.zip | |
vfio: ap: register IOMMU VFIO notifier
To be able to use the VFIO interface to facilitate the
mediated device memory pinning/unpinning we need to register
a notifier for IOMMU.
While we will start to pin one guest page for the interrupt indicator
byte, this is still ok with ballooning as this page will never be
used by the guest virtio-balloon driver.
So the pinned page will never be freed. And even a broken guest does
so, that would not impact the host as the original page is still
in control by vfio.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Acked-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/vfio_ap_private.h')
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_private.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h index a910be124595..18dcc4d769cc 100644 --- a/drivers/s390/crypto/vfio_ap_private.h +++ b/drivers/s390/crypto/vfio_ap_private.h @@ -81,8 +81,10 @@ struct ap_matrix_mdev { struct list_head node; struct ap_matrix matrix; struct notifier_block group_notifier; + struct notifier_block iommu_notifier; struct kvm *kvm; struct kvm_s390_module_hook pqap_hook; + struct mdev_device *mdev; }; extern int vfio_ap_mdev_register(void); |