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[v3,0/4] PCI: Rework pci_scan_slot() and isolated PCI functions

Message ID 20220419102803.3430139-1-schnelle@linux.ibm.com (mailing list archive)
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Series PCI: Rework pci_scan_slot() and isolated PCI functions | expand

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Niklas Schnelle April 19, 2022, 10:27 a.m. UTC 
Hi Bjorn, Hi Jan,

In an earlier version[0], I sought to apply the existing jailhouse special case
for isolated PCI functions to s390. As Bjorn noted in[1] there appears to be
some potential for cleaning things up and removing duplication though.

This series attempts to do this cleanup (Patches 1 and 2) followed by enabling
isolated PCI functions for s390 (Patches 3 and 4). If need be I can of course
split the cleanup off but for now I kept it as one as that's what I have
been testing.

Thanks,
Niklas

Changes v2 -> v3:
- Removed now unused nr_devs variable (kernel test robot)

[0] https://lore.kernel.org/linux-pci/20220404095346.2324666-1-schnelle@linux.ibm.com/
[1] https://lore.kernel.org/linux-pci/20220408224514.GA353445@bhelgaas/
 
Niklas Schnelle (4):
  PCI: Clean up pci_scan_slot()
  PCI: Move jailhouse's isolated function handling to pci_scan_slot()
  PCI: Extend isolated function probing to s390
  s390/pci: allow zPCI zbus without a function zero

 arch/s390/pci/pci_bus.c    | 82 ++++++++++----------------------------
 drivers/pci/probe.c        | 63 +++++++++++------------------
 include/linux/hypervisor.h |  9 +++++
 3 files changed, 52 insertions(+), 102 deletions(-)