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    Epyc VM to VM networking slow

    Scheduled Pinned Locked Moved Compute
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    • Maelstrom96M Offline
      Maelstrom96 @dinhngtu
      last edited by

      @dinhngtu What is the exact kernel patch that is required for the xen-platform-pci-bar-uc=false fix to work on a Linux guest? We're looking at potentially compiling our own kernel with the xen-netfront.c patch, and we would like to see about adding the other part of the Kernel code needed for the Grant table fix.

      TeddyAstieT 1 Reply Last reply Reply Quote 0
      • olivierlambertO Offline
        olivierlambert Vates 🪐 Co-Founder CEO
        last edited by

        Ping @TeddyAstie

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        • TeddyAstieT Offline
          TeddyAstie Vates 🪐 XCP-ng Team Xen Guru @Maelstrom96
          last edited by

          @Maelstrom96 said in Epyc VM to VM networking slow:

          What is the exact kernel patch that is required for the xen-platform-pci-bar-uc=false fix to work on a Linux guest? We're looking at potentially compiling our own kernel with the xen-netfront.c patch, and we would like to see about adding the other part of the Kernel code needed for the Grant table fix.

          Patch is in Linux since 5.19-rc. You also find it in some stable branches like 5.15.

          Otherwise, you can check this patch https://lore.kernel.org/xen-devel/ea4945df138527ed63e711cb77e3b333f7b3a4c9.1751633056.git.teddy.astie@vates.tech/

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