Reviewed-by: Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx> Nice work, Rafael! Thanks, H.Seto Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rjw@xxxxxxx> > > If MSI-X interrupt mode is used by the PCI Express port driver, too > many vectors are allocated and it is not ensured that the right > vectors will be used for the right services. Namely, the PCI Express > specification states that both PCI Express native PME and PCI Express > hotplug will always use the same MSI or MSI-X message for signalling > interrupts, which implies that the same vector will be used by both > of them. Also, the VC service does not use interrupts at all. > Moreover, is not clear which of the vectors allocated by > pci_enable_msix() in the current code will be used for PME and > hotplug and which of them will be used for AER if all of these > services are configured. > > For these reasons, rework the allocation of interrupts for PCI > Express ports so that if MSI-X are enabled, the right vectors will be > used for the right purposes. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> > --- -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
