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Extra KVM Changes For Linux 4.15 Bring UMIP Support, AMD SEV Changes Delayed

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  • benklett
    replied
    Damn, Linus rejected these patches: http://lkml.iu.edu/hypermail/linux/k...1.2/06155.html

    Leave a comment:


  • shmerl
    replied
    Originally posted by polarathene View Post

    Are you using the latest? You can ask question like that on r/VFIO and probably get a good answer as there are Ryzen users in the community. I'm pretty sure I saw someone mention similar but they fixed it by using git build on Arch(AUR). Could just be that you haven't got a version that has the support added.
    I'm using 3.9.0 which is the latest one. Here is the file in the master: https://gitlab.com/libvirt/libvirt/b...pu/cpu_map.xml

    I don't see Ryzen there, only Epyc. Automatic option (copy host) detects it as Haswell-noTSX weirdly.
    Last edited by shmerl; 21 November 2017, 09:11 PM.

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  • polarathene
    replied
    Originally posted by shmerl View Post
    Regarding Qemu/KVM and libvirt-daemon, can anyone explain please, why Ryzen wasn't added to the list or processors in cpu_map.xml?
    Are you using the latest? You can ask question like that on r/VFIO and probably get a good answer as there are Ryzen users in the community. I'm pretty sure I saw someone mention similar but they fixed it by using git build on Arch(AUR). Could just be that you haven't got a version that has the support added.

    Leave a comment:


  • Michael
    replied
    Originally posted by polarathene View Post

    NPT? (Nested Page Tables), Pretty sure you meant that not NFT.
    Typo, fixed. Thanks.

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  • polarathene
    replied
    the AMD VFIO NFT performance fix
    NPT? (Nested Page Tables), Pretty sure you meant that not NFT.

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  • Jedibeeftrix
    replied
    did we ever get to the bottom of which of the various enterprise security/emcryption features from epyc are available on threadripper?

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  • shmerl
    replied
    Regarding Qemu/KVM and libvirt-daemon, can anyone explain please, why Ryzen wasn't added to the list or processors in cpu_map.xml?

    Because of that, virt-manager really gets mixed up. I had to manually add it to cpu_map.xml trying to fish out cpu features that Ryzen supports from /proc/cpuinfo.

    I found this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1445836
    but it doesn't really explain it (or some comments are deleted there)? It's also closed for some reason.

    Leave a comment:


  • Extra KVM Changes For Linux 4.15 Bring UMIP Support, AMD SEV Changes Delayed

    Phoronix: Extra KVM Changes For Linux 4.15 Bring UMIP Support, AMD SEV Changes Delayed

    As some additional work past the KVM changes for Linux 4.15 submitted last week, a few more feature items have been queued...

    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
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