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s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl

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Implements the VFIO_DEVICE_RESET ioctl. This ioctl zeroizes
all of the AP queues assigned to the guest.

Signed-off-by: Tony Krowiak <[email protected]>
Reviewed-by: Halil Pasic <[email protected]>
Reviewed-by: Pierre Morel <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Tested-by: Michael Mueller <[email protected]>
Tested-by: Farhan Ali <[email protected]>
Tested-by: Pierre Morel <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
This commit is contained in:
Tony Krowiak 2018-09-25 19:16:29 -04:00 • committed by Christian Borntraeger
commit cd8a377e3b
1 changed files with 4 additions and 1 deletions
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5
drivers/s390/crypto/vfio_ap_ops.c
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@ -917,7 +917,7 @@ static int vfio_ap_mdev_get_device_info(unsigned long arg)
if (info.argsz < minsz)
return -EINVAL;
info.flags = VFIO_DEVICE_FLAGS_AP;
info.flags = VFIO_DEVICE_FLAGS_AP | VFIO_DEVICE_FLAGS_RESET;
info.num_regions = 0;
info.num_irqs = 0;
@ -933,6 +933,9 @@ static ssize_t vfio_ap_mdev_ioctl(struct mdev_device *mdev,
case VFIO_DEVICE_GET_INFO:
ret = vfio_ap_mdev_get_device_info(arg);
break;
case VFIO_DEVICE_RESET:
ret = vfio_ap_mdev_reset_queues(mdev);
break;
default:
ret = -EOPNOTSUPP;
break;