From 8823485a697de5c280a7a2632620338722f16663 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Thu, 11 Dec 2025 10:47:07 +0000 Subject: KVM: arm64: Track KVM IOCTLs and their associated KVM caps 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 Signed-off-by: Fuad Tabba [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 --- arch/arm64/include/asm/kvm_host.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm64/include/asm/kvm_host.h') diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index ac7f970c7883..395778c8ecab 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -1655,4 +1655,6 @@ static __always_inline enum fgt_group_id __fgt_reg_to_group_id(enum vcpu_sysreg p; \ }) +long kvm_get_cap_for_kvm_ioctl(unsigned int ioctl, long *ext); + #endif /* __ARM64_KVM_HOST_H__ */ -- cgit v1.2.3