diff options
| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2022-06-06 16:33:15 -0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2022-07-11 09:54:27 +0200 |
| commit | 6438e30714abd1bf7408356d3e86127d1fb379c0 (patch) | |
| tree | 3ae1a381b43a7730e24f6d454e2d7fb50bf875a9 /arch/s390/kvm/pci.c | |
| parent | c435c54639aa5513ab877c8b014dd83d4ce6b40e (diff) | |
KVM: s390: pci: add basic kvm_zdev structure
This structure will be used to carry kvm passthrough information related to
zPCI devices.
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-12-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Diffstat (limited to 'arch/s390/kvm/pci.c')
| -rw-r--r-- | arch/s390/kvm/pci.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c new file mode 100644 index 000000000000..e27191ea27c4 --- /dev/null +++ b/arch/s390/kvm/pci.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * s390 kvm PCI passthrough support + * + * Copyright IBM Corp. 2022 + * + * Author(s): Matthew Rosato <mjrosato@linux.ibm.com> + */ + +#include <linux/kvm_host.h> +#include <linux/pci.h> +#include "pci.h" + +static int kvm_s390_pci_dev_open(struct zpci_dev *zdev) +{ + struct kvm_zdev *kzdev; + + kzdev = kzalloc(sizeof(struct kvm_zdev), GFP_KERNEL); + if (!kzdev) + return -ENOMEM; + + kzdev->zdev = zdev; + zdev->kzdev = kzdev; + + return 0; +} + +static void kvm_s390_pci_dev_release(struct zpci_dev *zdev) +{ + struct kvm_zdev *kzdev; + + kzdev = zdev->kzdev; + WARN_ON(kzdev->zdev != zdev); + zdev->kzdev = NULL; + kfree(kzdev); +} |