Merge branch 'pci/endpoint'

- Pass the correct physical and virtual endpoint function numbers when
  setting translation of inbound memory windows (Koichiro Den)

- Make embedded doorbell IRQ non-shared, since currently only the first EPF
  can allocate doorbells (Koichiro Den)

- MSI doorbells currently target the first EPF attached to an EPC; let
  other EPFs try the embedded doorbell instead of failing when they can't
  use the MSI doorbell (Koichiro Den)

- Serialize scan of vNTB virtual PCI bus with other PCI topology changes
  (Koichiro Den)

- Manage vNTB lifetimes to avoid leaking virtual devices and buses and
  allow removal (Koichiro Den)

- Track vNTB link state from both sides so both see the same effective link
  state (Koichiro Den)

- Add local epf pointer to shorten repeated ntp->epf accesses (Koichiro
  Den)

- Configure vNTB MSI-X when supported to avoid IOMMU faults and failure to
  deliver doorbell interrupts on RC (Koichiro Den)

* pci/endpoint:
  PCI: endpoint: pci-epf-vntb: Honor MSI-X selection
  PCI: endpoint: pci-epf-vntb: Use a local epf pointer in interrupt setup
  PCI: endpoint: pci-epf-vntb: Track link state from both sides
  PCI: endpoint: pci-epf-vntb: Manage virtual NTB and PCI bus lifetime
  PCI: endpoint: pci-epf-vntb: Serialize virtual PCI bus scan
  PCI: endpoint: pci-ep-msi: Let non-first EPFs use embedded doorbells
  PCI: endpoint: pci-ep-msi: Make embedded doorbell IRQ exclusive
  PCI: endpoint: pci-epf-vntb: Pass PF/VF number when BAR programming

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index 704e1dc8b30a..226f3e59cf60 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -163,7 +163,8 @@ enum pci_epf_doorbell_type {
  *       For MSI-backed doorbells this is the MSI message, while for
  *       "embedded" doorbells this represents an MMIO write that asserts
  *       an interrupt on the EP side.
- * @virq: IRQ number of this doorbell message
+ * @virq: IRQ number of this doorbell message. Multiple messages may use the
+ *        same IRQ; consumers must request each distinct IRQ only once.
  * @irq_flags: Required flags for request_irq()/request_threaded_irq().
  *             Callers may OR-in additional flags (e.g. IRQF_ONESHOT).
  * @type: Doorbell type.