[PATCH v6 00/33] KVM: s390: Introduce arm64 KVM

Christian Borntraeger borntraeger at linux.ibm.com
Wed Aug 12 09:28:57 PDT 2026


Am 12.08.26 um 17:35 schrieb Steffen Eiden:

> C) KVM/s390 reorganization (patches 12-22):
>     Prepare s390 for a second KVM module. Move existing s390 KVM code into
>     dedicated s390 and gmap subdirectories to make room for a second KVM
>     implementation. Refactor gmap to better integrate with the second KVM
>     implementation. GMAP hides a few features only required when managing s390
>     guests: Storage keys, CMMA, and prefix handling. Those are guarded behind an
>     #if KVM_S390_MANAGES_S390_GUEST. Only features which implementation would
>     break kvm-arm64 code are guarded. I leave the non-breaking stuff (like
>     shadow-gmaps or ucontrol) for the LTO.

I will likely take 12-21 for the next merge window so that we can minimize this
patch set.  sashiko and claude are happy. Mostly mechanical moves. I will review
those first and might do small fixups myself if necessary.



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