RE: [PATCH v2 01/15] PCI/MSI: Forward MSI-X vector enable error code in pci_alloc_irq_vectors_affinity()

> -Original Message- > From: Logan Gunthorpe > Sent: Wednesday, June 3, 2020 6:22 PM > > > On 2020-06-03 10:04 a.m., Stankiewicz, Piotr wrote: > >> -Original Message- > >> From: Logan Gunthorpe > >> Sent: Wednesday, June 3, 2020 5:48 PM > >> > >> > >> > >> On 2020-06-03 5:44

Re: [PATCH v2 01/15] PCI/MSI: Forward MSI-X vector enable error code in pci_alloc_irq_vectors_affinity()

On 2020-06-03 10:04 a.m., Stankiewicz, Piotr wrote: >> -Original Message- >> From: Logan Gunthorpe >> Sent: Wednesday, June 3, 2020 5:48 PM >> >> >> >> On 2020-06-03 5:44 a.m., Piotr Stankiewicz wrote: >>> When debugging an issue where I was asking the PCI machinery to enable a >>> set

RE: [PATCH v2 01/15] PCI/MSI: Forward MSI-X vector enable error code in pci_alloc_irq_vectors_affinity()

> -Original Message- > From: Logan Gunthorpe > Sent: Wednesday, June 3, 2020 5:48 PM > > > > On 2020-06-03 5:44 a.m., Piotr Stankiewicz wrote: > > When debugging an issue where I was asking the PCI machinery to enable a > > set of MSI-X vectors, without falling back on MSI, I ran

Re: [PATCH v2 01/15] PCI/MSI: Forward MSI-X vector enable error code in pci_alloc_irq_vectors_affinity()

On 2020-06-03 5:44 a.m., Piotr Stankiewicz wrote: > When debugging an issue where I was asking the PCI machinery to enable a > set of MSI-X vectors, without falling back on MSI, I ran across a > behaviour which seems odd. The pci_alloc_irq_vectors_affinity() will > always return -ENOSPC on

[PATCH v2 01/15] PCI/MSI: Forward MSI-X vector enable error code in pci_alloc_irq_vectors_affinity()

When debugging an issue where I was asking the PCI machinery to enable a set of MSI-X vectors, without falling back on MSI, I ran across a behaviour which seems odd. The pci_alloc_irq_vectors_affinity() will always return -ENOSPC on failure, when allocating MSI-X vectors only, whereas with MSI