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Linux 5.4 To Support NVMe-of P2P Support With Compatible Systems

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  • Linux 5.4 To Support NVMe-of P2P Support With Compatible Systems

    Phoronix: Linux 5.4 To Support NVMe-of P2P Support With Compatible Systems

    Sent in and already landed on Monday were the PCI changes for Linux 5.4 and includes an interesting feature addition...

    http://www.phoronix.com/scan.php?pag...CI-NVMe-OF-P2P

  • numacross
    replied
    Originally posted by starshipeleven View Post
    Intel is out of their fucking minds as usual.

    How can basically allowing DMA to a CPU cache without any sort of IOMMU be anywhere near sane from a security standpoint.
    But it's really, really fast!

    Leave a comment:


  • starshipeleven
    replied
    Originally posted by numacross View Post

    What are you saying? It'll be just fine!
    Intel is out of their fucking minds as usual.

    How can basically allowing DMA to a CPU cache without any sort of IOMMU be anywhere near sane from a security standpoint.

    Leave a comment:


  • microcode
    replied
    It'd be interesting to see TLS offload in NICs, so that you could go a step further than sendfile: just tell the NVMe controller to stream some data to your NIC when you want to serve a static file.

    Leave a comment:


  • numacross
    replied
    Originally posted by schmidtbag View Post
    Although I definitely see the benefits of this, seems to me this is going to be a gargantuan security exploit down the road.
    What are you saying? It'll be just fine!

    Leave a comment:


  • schmidtbag
    replied
    Although I definitely see the benefits of this, seems to me this is going to be a gargantuan security exploit down the road.

    Leave a comment:


  • ms178
    replied
    Originally posted by Michael View Post

    This is only relevant for peer-to-peer devices, so no benefit if say just having an NVMe device on your system.
    Thanks, I had the impression that this could potentially improve the GPU to NVMe SSD communication (withouth the roundtrip to the CPU).

    Leave a comment:


  • Michael
    replied
    Originally posted by ms178 View Post
    Does it translate into a better IO experience on whitlisted platforms with NVMe devices?
    This is only relevant for peer-to-peer devices, so no benefit if say just having an NVMe device on your system.

    Leave a comment:


  • ms178
    replied
    Does it translate into a better IO experience on whitlisted platforms with NVMe devices?

    Leave a comment:

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