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s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove

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The vfio_ap_config_remove function uses the bitmap_andnot function to clear
bits from the matrix_mdev->matrix.adm bitmap (specifies the control domains
assigned to the mdev). This prevents the explicitly unplugged control
domains from being removed the KVM guest. The bitmap_and function is used
instead.

Fixes: eeb386aeb5 ("s390/vfio-ap: handle config changed and scan complete notification")
Cc: stable@vger.kernel.org
Signed-off-by: Anthony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
This commit is contained in:
Anthony Krowiak 2026-08-12 16:02:36 -04:00 committed by Christian Borntraeger
parent 5883528250
commit 6b8a02e216
1 changed files with 3 additions and 3 deletions
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6
drivers/s390/crypto/vfio_ap_ops.c
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@ -2631,9 +2631,9 @@ static void vfio_ap_mdev_cfg_remove(unsigned long *ap_remove,
do_remove |= bitmap_and(aqrem, aq_remove,
matrix_mdev->matrix.aqm,
AP_DOMAINS);
do_remove |= bitmap_andnot(cdrem, cd_remove,
matrix_mdev->matrix.adm,
AP_DOMAINS);
do_remove |= bitmap_and(cdrem, cd_remove,
matrix_mdev->matrix.adm,
AP_DOMAINS);
if (do_remove)
vfio_ap_mdev_hot_unplug_cfg(matrix_mdev, aprem, aqrem,