KVM: s390: Implement KVM_PRE_FAULT_MEMORY

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Implement and enable the KVM_PRE_FAULT_MEMORY ioctl for s390.

Faulted-in pages will be marked as accessed, unlike x86, otherwise they
will trigger a minor fault when accessed. Avoiding such faults is one of
the points of KVM_PRE_FAULT_MEMORY.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260527144358.186359-3-imbrenda@linux.ibm.com>

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Claudio Imbrenda 2026-05-27 16:43:55 +02:00

parent 499d2e4b75

commit bea77e83c0

2 changed files with 46 additions and 0 deletions

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1

arch/s390/kvm/Kconfig

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45

arch/s390/kvm/kvm-s390.c

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