On Sat, 15 Oct 2016 12:37:55 +0000 Bharat Kumar Gogada <bharat.kumar.gogada@xxxxxxxxxx> wrote: Hi Bharat, > Can anyone tell why MSI interrupts are limited to maximum 32 > interrupts, even though we have 16bit message data register ? That's the very definition of the original PCI MSI: Up to 32 consecutive interrupts per function, and a single doorbell address. MSI-X lifts that restriction and offers up to 2048 interrupts that do not have to be contiguous can target individual doorbells. Assuming your MSI controller advertises MSI-X support and that your devices do support it as well, you'll be able to enjoy those. > > Regards, > Bharat > > > This email and any attachments are intended for the sole use of the > named recipient(s) and contain(s) confidential information that may > be proprietary, privileged or copyrighted under applicable law. If > you are not the intended recipient, do not read, copy, or forward > this email message or any attachments. Delete this email message and > any attachments immediately. > Please fix your email not to carry such disclaimer (or use a private email address if you can't work around your company policy). Posting confidential information on a public mailing list feels a bit silly. Thanks, M. -- Without deviation from the norm, progress is not possible. -- 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
