Subj : [$] Hardware-assisted Arm VMs for s390
To   : All
From : LWN.net
Date : Tue 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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