Linux 5.9-rc2 Released With EXT4 Updates, More POWER10 Bits

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  • phoronix
    Administrator
    • Jan 2007
    • 67364

    Linux 5.9-rc2 Released With EXT4 Updates, More POWER10 Bits

    Phoronix: Linux 5.9-rc2 Released With EXT4 Updates, More POWER10 Bits

    It's been one week already since feature work ended on Linux 5.9 and that means it's time for the 5.9-rc2 kernel. Like clockwork, Linux Torvalds has shipped Linux 5.9-rc2 with the initial batch of bug/regression fixes as well as some late changes for the cycle...

    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite
  • gregzeng
    Senior Member
    • May 2010
    • 170

    #2
    RC1 had only the one change: "add inline encryption support". This rc2 has 53 modifications for EXT4.
    As usual, these Linux Kernels are available for quick & easy installation into most desktop Linux operating systems. Most of these systems are based on Ubuntu. Some (all?) Debian based systems can also use these official Ubuntu compilations.
    There are ready compiled versions for the five CPU's.
    [DIR] amd64/ 2020-08-23 23:10 -
    [DIR] arm64/ 2020-08-23 22:44 -
    [DIR] armhf/ 2020-08-23 22:54 -
    [DIR] i386/ 2020-08-23 22:41 -
    [DIR] ppc64el/ 2020-08-23 22:42 -

    If you need faster Linux, as usual the Low-Latency kernel versions exist only for the AMD64 CPU.

    Comment

    • muncrief
      Senior Member
      • Nov 2016
      • 866

      #3
      Darn, KVM is still broken.

      Comment

      • towo2099
        Phoronix Member
        • Sep 2008
        • 119

        #4
        Darn, KVM is still broken.
        In which way? All my vm's are working fine with 5.9-rc1.

        Comment

        • Jedibeeftrix
          Senior Member
          • Feb 2011
          • 330

          #5
          did the Realtek 8125 2.5Gb NIC firmware make it into 5.9?

          https://bugzilla.suse.com/show_bug.cgi?id=1174875#c2

          comment on above says it was pushed to master, not sure if that means it was accepted and now sits there...?

          Comment

          • edwaleni
            Senior Member
            • Feb 2015
            • 1273

            #6
            Hopefully the new firmware will help it run better when it gets hot and man, do these chips get hot when pushed. They throttle back to 1GbE constantly to stay cool.

            Comment

            • Jedibeeftrix
              Senior Member
              • Feb 2011
              • 330

              #7
              not heard anything to this affect about the 8125...?

              i know the intel 2.5Gb NICs were buggy and could only be made to reliably run at 1Gb speeds.

              Comment

              • muncrief
                Senior Member
                • Nov 2016
                • 866

                #8
                Originally posted by towo2099 View Post

                In which way? All my vm's are working fine with 5.9-rc1.
                I should have been more clear. In both 5.9 rc1 and rc2 VFIO passthrough is broken. If you don't use passthrough things are fine.

                And the error is an oldy but goody - the old "VFIO_MAP_DMA failed: Cannot allocate memory" problem.

                Here's an excerpt from the VM log:

                2020-08-24T15:59:45.367362Z qemu-system-x86_64: -device vfio-pci,host=0000:06:00.0,id=hostdev0,bus=pci.7,addr=0 x0: VFIO_MAP_DMA failed: Cannot allocate memory
                2020-08-24T15:59:45.367386Z qemu-system-x86_64: -device vfio-pci,host=0000:06:00.0,id=hostdev0,bus=pci.7,addr=0 x0: VFIO_MAP_DMA failed: Cannot allocate memory
                2020-08-24T15:59:45.370675Z qemu-system-x86_64: -device vfio-pci,host=0000:06:00.0,id=hostdev0,bus=pci.7,addr=0 x0: VFIO_MAP_DMA failed: Cannot allocate memory
                2020-08-24T15:59:45.370794Z qemu-system-x86_64: -device vfio-pci,host=0000:06:00.0,id=hostdev0,bus=pci.7,addr=0 x0: vfio 0000:06:00.0: failed to setup container for group 27: memory listener initialization failed: Region pc.ram: vfio_dma_map(0x55b23852fa20, 0x0, 0xa0000, 0x7f8333e00000) = -12 (Cannot allocate memory)

                Here's a link to the bug report:
                Last edited by muncrief; 24 August 2020, 12:54 PM.

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