diff options
| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2022-06-28 16:30:59 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-07-22 16:06:03 -0500 |
| commit | 189c6c33ff421def040b904fb14ef76c5bf5af4c (patch) | |
| tree | 864dd92ce7aec34c0cf4929b14c70214ee29f3a8 /drivers/pci/probe.c | |
| parent | db360b1ea7faef290471bc1b2a7463b96fd20a07 (diff) | |
| download | linux-189c6c33ff421def040b904fb14ef76c5bf5af4c.tar.gz | |
PCI: Extend isolated function probing to s390
Like the jailhouse hypervisor, s390's PCI architecture allows passing
isolated PCI functions to a guest OS instance. As of now this is was not
utilized even with multi-function support as the s390 PCI code makes sure
that only virtual PCI busses including a function with devfn 0 are
presented to the PCI subsystem. A subsequent change will remove this
restriction.
Allow probing such functions by replacing the existing check for
jailhouse_paravirt() with a new hypervisor_isolated_pci_functions() helper.
Link: https://lore.kernel.org/r/20220628143100.3228092-5-schnelle@linux.ibm.com
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 1f91ed67b5c57..4948531481d1a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2668,7 +2668,7 @@ int pci_scan_slot(struct pci_bus *bus, int devfn) * a hypervisor that passes through individual PCI * functions. */ - if (!jailhouse_paravirt()) + if (!hypervisor_isolated_pci_functions()) break; } fn = next_fn(bus, dev, fn); |