• [$] Hardware-assisted Arm VMs for s390

    From LWN.net@1337:1/100 to All on Tuesday, May 05, 2026 16:00:06
    [$] Hardware-assisted Arm VMs for s390

    Date:
    Tue, 05 May 2026 14:52:45 +0000

    Description:
    A recent patch set from Steffen Eiden and others has set the groundwork for allowing
    hardware-assisted emulation of Arm CPUs on s390 CPUs. Version two of the posting fixes a handful of smaller problems, but does not
    differ much.
    The patches were welcomed
    by the Arm maintainers, pending some discussion of how the collaboration between the
    architectures could be structured to prevent maintainability problems on the Arm
    side. When those details are resolved, the patches could pave the way for transparently running Arm-based virtual machines (VMs) on s390 hosts at
    native or
    near-native speeds.

    ======================================================================
    Link to news story:
    https://lwn.net/Articles/1069954/


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