Hi, Roland. Quoting r. Michael S. Tsirkin ([EMAIL PROTECTED]) "Re: [openib-general] [PATCH] mthca: Test interrupts during initialization": > Hello! > Quoting r. Roland Dreier ([EMAIL PROTECTED]) "Re: [openib-general] [PATCH] > mthca: Test interrupts during initialization": > > Michael> If mthca could downgrade gracefully to regular > > Michael> interrupts, the default for msi-x could be changed to 1? > > > > Possibly (although it depends on the precise MSI-X failure mode). > > Also I seem to remember some problems with changing the PCI header > > (ie to enable/disable MSI-X) after SYS_EN, although I can't remember > > exactly what the issue was. > > > > - R. > > You asked the right person :) > You cant do it on tavor, but it will be fine if you > close everything and do system disable. > mst
I stand corrected. To disable MSI, it is sufficient to close all EQs, perform the appropriate pci configuration transaction to disable MSI, and then re-create the EQs with interrupt value instead of the MSI value. You do not have to go through system disable. By the way, if you plan to do it, I think you also may want to check the FW revision since older FW revisions had issues with MSI or MSIX. MST _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
