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From GitBox <...@apache.org>
Subject [GitHub] [incubator-nuttx] sonicyang commented on pull request #979: PCI-E support with x86_64/qemu example
Date Fri, 08 May 2020 12:32:39 GMT

sonicyang commented on pull request #979:
URL: https://github.com/apache/incubator-nuttx/pull/979#issuecomment-625793332


   @btashton I have checked your modifications.
   I didn't make it work with my serial card because of lacking find_cap and msi/msix routines.
   But I did confirmed that it did scan the bus without crashing my Intel Xeon machine.
   
   I did noticed this "smart" way of scanning bus didn't work with Jailhouse, because Jailhouse
didn't have a full PCI hierarchy, e.g. root device, etc. Devices are passed to the cells via
VT-d separately.
   
   I am currently working on ivshmem device driver for Jailhouse, I hope we can take this
problem into account.
   
   I purpose that we should open a PCI feature branch, cooperate there with PR.
   Of course, we need some one with permission to do this.
   
   What do you think?
   
   
   


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