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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2022-06-06 16:33:20 -0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2022-07-11 09:54:33 +0200 |
| commit | 09340b2fca007509c3cbc34fdc97961e0abfc589 (patch) | |
| tree | 6e1eebe88f8ced8428620209c5b0fda95db506cb /arch/s390/pci | |
| parent | 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc (diff) | |
| download | linux-09340b2fca007509c3cbc34fdc97961e0abfc589.tar.gz linux-09340b2fca007509c3cbc34fdc97961e0abfc589.tar.bz2 linux-09340b2fca007509c3cbc34fdc97961e0abfc589.zip | |
KVM: s390: pci: add routines to start/stop interpretive execution
These routines will be invoked at the time an s390x vfio-pci device is
associated with a KVM (or when the association is removed), allowing
the zPCI device to enable or disable load/store intepretation mode;
this requires the host zPCI device to inform firmware of the unique
token (GISA designation) that is associated with the owning KVM.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Pierre Morel <pmorel@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-17-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Diffstat (limited to 'arch/s390/pci')
| -rw-r--r-- | arch/s390/pci/pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 86cd4d8446b1..73cdc5539384 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -132,6 +132,7 @@ int zpci_register_ioat(struct zpci_dev *zdev, u8 dmaas, zpci_dbg(3, "reg ioat fid:%x, cc:%d, status:%d\n", zdev->fid, cc, status); return cc; } +EXPORT_SYMBOL_GPL(zpci_register_ioat); /* Modify PCI: Unregister I/O address translation parameters */ int zpci_unregister_ioat(struct zpci_dev *zdev, u8 dmaas) @@ -712,6 +713,7 @@ int zpci_enable_device(struct zpci_dev *zdev) zpci_update_fh(zdev, fh); return rc; } +EXPORT_SYMBOL_GPL(zpci_enable_device); int zpci_disable_device(struct zpci_dev *zdev) { @@ -735,6 +737,7 @@ int zpci_disable_device(struct zpci_dev *zdev) } return rc; } +EXPORT_SYMBOL_GPL(zpci_disable_device); /** * zpci_hot_reset_device - perform a reset of the given zPCI function @@ -828,6 +831,7 @@ struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state) kref_init(&zdev->kref); mutex_init(&zdev->lock); + mutex_init(&zdev->kzdev_lock); rc = zpci_init_iommu(zdev); if (rc) |