diff options
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r-- | arch/s390/kvm/Makefile | 1 | ||||
-rw-r--r-- | arch/s390/kvm/pci.c | 36 | ||||
-rw-r--r-- | arch/s390/kvm/pci.h | 21 |
3 files changed, 58 insertions, 0 deletions
diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile index 26f4a74e5ce4..02217fb4ae10 100644 --- a/arch/s390/kvm/Makefile +++ b/arch/s390/kvm/Makefile @@ -10,4 +10,5 @@ ccflags-y := -Ivirt/kvm -Iarch/s390/kvm kvm-y += kvm-s390.o intercept.o interrupt.o priv.o sigp.o kvm-y += diag.o gaccess.o guestdbg.o vsie.o pv.o +kvm-$(CONFIG_VFIO_PCI_ZDEV_KVM) += pci.o obj-$(CONFIG_KVM) += kvm.o 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); +} diff --git a/arch/s390/kvm/pci.h b/arch/s390/kvm/pci.h new file mode 100644 index 000000000000..ce93978e8913 --- /dev/null +++ b/arch/s390/kvm/pci.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * s390 kvm PCI passthrough support + * + * Copyright IBM Corp. 2022 + * + * Author(s): Matthew Rosato <mjrosato@linux.ibm.com> + */ + +#ifndef __KVM_S390_PCI_H +#define __KVM_S390_PCI_H + +#include <linux/kvm_host.h> +#include <linux/pci.h> + +struct kvm_zdev { + struct zpci_dev *zdev; + struct kvm *kvm; +}; + +#endif /* __KVM_S390_PCI_H */ |