KVM: arm64: Track KVM IOCTLs and their associated KVM caps

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Track KVM IOCTLs (VM IOCTLs for now), and the associated KVM capability
that enables that IOCTL. Add a function that performs the lookup.

This will be used by CoCo VM Hypervisors (e.g., pKVM) to determine
whether a particular KVM IOCTL is allowed for its VMs.

Suggested-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
[maz: don't expose KVM_CAP_BASIC to userspace, and rely on NR_VCPUS
      as a proxy for this]
Link: https://patch.msgid.link/20251211104710.151771-8-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Fuad Tabba 2025-12-11 10:47:07 +00:00 • committed by Marc Zyngier

parent f4eee308c8

commit 8823485a69

2 changed files with 47 additions and 0 deletions

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arch/arm64/include/asm/kvm_host.h

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45

arch/arm64/kvm/arm.c

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