On 10/31/2014 09:12 AM, Johannes Thumshirn wrote: > On Thu, Oct 30, 2014 at 02:51:57PM +1100, Michael Ellerman wrote: >> Why would you not use MSI-X ?
If I'm not mistaken, a PCI-E requirement is to support MSI but MSI-X is optional. And with MSI you can have multiple interrupts per single device (power of two, max 32). Now imagine you have a FPGA with two (or more) different devices in it and you don't want them to share the IRQ line (for $reason). I bet the HW developer sees MSI and MSI-X and the former is for some reason cheaper compared to MSI-X and it fits the needs. So… > > Does anyone (especially the original author) have any objections if I re-spin > the patch series? I didn't get around to address the review comments so it did not went in and there was no v2. Feel free re-do the series. Sebastian _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
